Have a 21 Duramax with 55K miles on it, recently had 2 long unloaded road trips, 400 miles and 1,200 miles round trip. Both trips I averaged 20.5 mpgs with one regen in each trip. Towing my 9,500lbs 5th Wheel, I’m averaging 10.6 mpgs. Trucks big so the weather plays a huge role. If its windy, fuel economy is horrible that day but overall I’m shocked with how good the fuel economy is. Have the banks idash, truck regens every 800 miles regardless of where my DPF% is. Love your reviews, you are where I found out that I need to clean my MAP sensor. Do it after every oil change now.
Have had both 6.6 and 3.0. Love em both. But for light hauling under 9k lbs and general around the county driving i prefer the 3.0. But for heavy hauling over 9k lbs and faster driving like 70 mph and above, 6.6 all day & night long. More power more money, always.
It’s almost like those people that insist on having a diesel to idle around town and occasionally run down the highway and maybe pull an aluminum fishing boat are surprised when the truck does a regen all the time and sucks the fuel down
@@kyleryneost short trips never working the truck and getting the exhaust hot enough to do a passive regen but they just had to have a diesel because it’s a status symbol
I have the 2024 2500 High Country with the Duramax. Only have 550 miles on it, about 65 miles of it towing my 12K 5th wheel. I bought it specifically to tow my camper and not as a daily driver around town. I did not look at fuel mileage only because it is so new but, glad to see the normal fuel economy is pretty darn good. I have a Volvo XC90 and get 21 MPG at best running around town and what not. Pretty amazing for a truck of that size and weight. Great video. Thank You.
I’m quite happy with my 2024 Chevy 2500. Duramax gets about 20 on the flats Highway driving. With my 7000 lb camper, it drops to 12-13. City driving around 14. Not quite as good as my 2019 F150 5.0, but I never worry about the climbs or the wind pulling that trailer. Thanks for your review!
I'm getting 17 L / 100km on my 2024 chevy dually cab & chassis. So far I've put 2700km on it. For its size I'm very happy with it. Thanks for your videos. Cheers.
My 2023 L5P GMC Denali dually will get close to 18 mpg highway, but I am pretty disappointed with my towing mileage. When towing my 15k 5th wheel I am down to 7.5 mpg average over 600 miles. Granted I had some pretty strong winds on the last trip, this seems a bit off to me. My last truck was a 2017 L5P 3500 SRW and I averaged 9.6 mpg towing the same trailer. Both trucks had Banks Derringer tuners and Banks Cold Air intakes. Regarding the intakes, with the factory intake and 8000 miles on the odometer I was only getting 200-250 miles between regens towing heavy. Then I added the Banks Cold Air Intake and now I consistantly get 650-700 miles between regens while towing. What is really interesting is that when watching the soot load with my Banks I dash I can watch the soot load decrease while towing and now the truck usually goes into regen because it has timed out and not because it is full of soot. Very interesting. I have sold a few of my friends the same set up and their results are the same, much increased distance between regens! When running empty and hand calculating my mileage, I am usually getting 1-1.5 mpg better than what the computer shows, but after my last trip loaded the computer was pretty close. I will also add that I increased tire size from the factory 235/80R17 to a 255/80R17 that is about 1.5 inches taller. Now my speedometer is dead on accurate, but with the factory tires I was showing more miles traveled than I actually was going as verified by my gps.
‘24 2500 HD duramax 1200 miles. 75 mph on interstate about 17 mpg, 62mph on two lanes about 19 mpg, mix in town and expressway 14 mpg. It a 7800 lb truck. I’ll take that! 86 k20 with 4:10 and 350 4 barrel was happy to see double digits!
The sweet spot on my ‘24 Duramax is 70mph. It’ll get to 22 mph if I go 70 for a long time. The truck has 1400 miles on it and I’ve done 2 regens up to this point.
Had a 24 Silverado Duramax as a company vehicle for about 6 months before ending up in a 23 Superduty 6.7 (SO). The Duramax was getting about 15-16 mpg mixed driving. Also regened 250-350 miles. Superduty getting about 2mpg better and regen only happens every 500 miles with computer showing 60% DPF load. Same driving habits. Otherwise I loved that Duramax.
Fair enough! I think both the duramax and power stroke platform are solid choices. But for whatever reason is does seems like the druamax engines are less efficient with more frequent regens exactly as you experienced
Some specs are missing, rear axle ratios, transmissions, is Ford a 10 SPD, 2 or 4WD, one ton(dually) bed length, tonneau cover, tires and pressures. Oddly enough ambient air temperature, The colder the worse the mileage like 2-3 mpg less. I've got a Dodge Laramie 3500 quad cab, 4WD, SRW, 8' bed not covered 5.9 Cummins no mods, 48 RE trans, 3.91 axle ratios 5.9 Cummins, currently my AC condenser is off vehicle so whatever difference that makes to the air to air/charge air cooler is unknown. city 16 mpg, hwy/frwy 22 mpg plus, approximately 60 mph seems to be a threshold, 70 mph is 20 mpg, 80 mph is 16 mpg, 90-95 mph is 11+/- mpg. Normally I drive for mileage and I assure you accelerating up to speed makes a big difference but you don't want to anger other drivers with lake freighter takeoffs, besides after driving like this the black smoke pours out during hard acceleration. Goodyear all terrain tires 265/70x17 (121) 60 psi front, 70 psi rear. Although I haven't done this to my pickup I had a 1989 Chevy hi top Kellogg conversion van just a good wax job was worth 2 mpg from 12.1 to 14.1 mpg driving roughly the same, say this because when you put in the effort you tend to influence your made a difference hypothesis somewhat
Some context on mileage. One of the cars I learned to drive in was a 1978 Buick LeSabre. It had a 350 v8 with a 2 barrel carb and a 3 speed automatic transmission. On a trip from where we lived in Georgia to Michigan to visit relatives we got 17 mpg.
I've been tracking my 2024 Duramax since August. Its a combined towing, city and highway. Here's what my Fuelly Log shows: AVG 13.2 MPG, LAST MPG 14.5, Best MPG 18.5, 17,918 miles tracked, 60 fuel logs. In comparison, my 2022 Ram 2500 6.4 hemi with 4.10s, had 15,424 miles tracked with an AVG MPG of 10.3 and 15.0 BEST MPG, doing the same combination of towing, city and highway. Both trucks are stock with tonneau covers and using a lot of cruise control and maximum speeds of 70 mph.
Ask any Chevy driver and they will answer, "28 mpg". Everybody knows that. Of course it will be way better than an inline 6. Less reciprocating pistons. That's why every big rig on road is running v-8's.
2021 L5P 18mpg empty sounds about right. You can get more if you're keeping it under 70mph on flat ground, maybe 20-23mpg. I clean that MAP sensor everytime I change the oil. Besides getting a poor quality DEF check engine light once, I've never had any real issues with the duramax. I don't like the 10spd though, I wish they put an 8spd in it, or made the gears longer, seems like the truck has plenty of power, but you're always shifting and not putting the power down.
You want to know for sure what a modern diesel engine is capable of when it comes to MPG at a given performance level? Delete it, don't put any crazy tunes on it, but run it without all that junk bolted on (for science!) and see. Apples to apples comparison right there... People have been doing it for years, the concept isn't rocket science; you have an engine that basically runs like an air compressor, if you want it to run efficiently, then let it breath and don't force it to pull exhaust back in as well. You wouldn't have people wasting DEF fluid, you wouldn't have an SCR system THAT INJECTS DIESEL into the DPF during active regens, and you wouldn't be wasting all the extra diesel fuel in the decreased fuel efficiency from the air restrictions created, fuel burned during active regens, and weight added with all the added emissions equipment and extra DEF fluid that you have to haul around. Modern diesel emissions standards, and ICE emissions standards in general are pie in the sky lunacy brought about by your friendly Karens at the EPA who can't help themselves when it comes to telling everyone what to do.
Absolutely! There is the one and best solution to all the problems these trucks encounter. Once this is done, these trucks become much less to own, and of course fun as hell to drive.
My 2020 cummins 3500 HO with a 75hp tune is averaging 10.5 l/100km on the dash right now in northern bc. This includes 10 to 15 min warm ups in the morning and a mix of highway, city and country drives to the cabin. On road trips through the rocky mountains driving 100-115 km/h and passing ive seen as low as 6.4-6.8l/100km.
Seems a bit outlandish, especially the 6.8L figure. I occasionally see comments like this, but then the vast majority seem to be over 12L/100km. I know driving habits play a big role but still there always seems to be a fairly big discrepancy when people report their fuel economy. If there is a Fuelly or other record to share to show the detailed fuel up history, I am definitely open to it though.
@@ALMX5DPsees his truck get 10.5L on the hwy once and now he tells everyone that’s his avg “with warming up”. We all know it’s BS. It’s the same as guys telling you their golf scores. 😂 And you’re right. Without the fuelly app it’s non sense to listen to these guys. On the GMC group with the 3.0 duramax everyone brags about 30+mpg. Then the app came out with a function to show lifetime fuel average. Most guys were showing between 18-24mpg and the odd guy 26 or 27.
My 2024 duramax got terrible milage until the engine got 9k miles. Towing 8k I get 16 and unloaded at 65 I get 24 mpg, this is with 37 inch tires on a zr2 2500hd. When the truck had 2k Miles best was 12 towing and 17 unloaded
I full time rv pulling my 5th wheel toyhauler in my 2008 2500hd clapped out 280k miles with blown head gaskets pulled my rig and never asked for nothing but more coolant got better fuel milage but this 2024 I bought needs a box of def every 1000 miles and barely gets 7mpg pulling where as I used to plan on 10 mpg in the old truck I regret my buy so far and I haven't even got the 1st oil change.
My Silverado 2500HD Duramax LP5 (2nd Gen) got relatively bad mileage for about the first 1000 miles - 16mpg on the highway and12-13mpg overall. That was a real shocker coming from my 2013 2500HD LMN that had the 6-speed Alison and was a 4x4. It got 16-17mpg overall and 21-22mpg on the highway. I live in Central Florida with no hills or snow. Now that I've got nearly 2000 miles on my new truck, the mileage has shown a marked increase - 20+mgp on the highway and 16+ overall which is approaching that of my former truck. I think this may be due mostly to the engine management systems learning my driving style and the motor breaking in as well. I can tell the computer is learning as time passes - for example, when new and under acceleration from a stop with a constant pedal position my truck would really surge after about 2 seconds from taking off, without me pressing the pedal any further down. Now that behavior is not nearly as noticeable and acceleration is comfortably constant when taking off from a stop. In my former truck I could always tell when it did a regen, because the instantaneous mileage dropped to11-12mpg regardless of where I was driving.
I bought my 2024 L5P to tow and haul everything all the time. 30,000km on my truck not once have I looked at the fuel economy. It’s a truck, the fuel economy is gonna be different based on weight being hauled. If anyone is concerned about fuel economy when buying a Diesel truck you may as well just not buy one lmao
I had a 2015 LML with a lift pump and tune. It's mileage was much better than my 2024 L5P. But, I give this thing a tune, a lift pump and oversize tires to get my gas mileage up. It's worth noting that the 2024 3500 is 1,100 pounds heavier than the 2015 2500.
16000km Denali 2024 now getting 11.2litres small mix 18km backroad and little city mostly hiway . 22 ram 3500 15.8 litre now 20000km still in halve winter blend fuel and makes a difference for sure both in coop diesel Trx finally seeing 15.1litre mostly hiway same mix of city and backroad but usaually 18.9 litre average 46000km 2021 with ram bar etc for weight reference only
2022 Ram 3500 HO Cummins 12k miles. Purchased in Ohio and drove it 2200miles home to Las Vegas Nevada in early March 65-80MPH the whole way. 22MPG on the computer, math -wise 20.8MPG.
Yep spot on. 17-18 mpg average. On a long trip it’s 20 on the computer, but I haven’t verified that manually at the pump. And yes lots of random regens that will take it down to 14 mpg. I guess this depends on usage, but for me I’m guessing every 200-250 miles it does a regen. Road conditions, load, and how you drive doesn’t seem to matter…it’s all about the engine. I can’t figure why it’s only 10-12 mpg towing only 3-4k empty or full trailer…I’d think empty trailer would give better mpg, but it’s as if the truck knows it’s towing so just drinks double the fuel.
No tow, I've seen 21.4 mpg (U.S.)/25.7 mpg (IMP) with my '23 2500HD Denali. I use it almost exclusively for road trips, mainly highway, so when regens happen they mostly take place when all combustion components are hot, to begin with. I haven't noticed any fuel economy harm caused by regen.
The technical information you include in your is quite interesting and allows us to better understand the emission requirements and how they limit a diesel engines MPG. I will come up with a similar 85 mile route here in upstate NY and report MPG with my 2024 2500HD gasser. 87 octane fuel here is about 80 cents/gal less, we run no DEF and don't pay the $9000+ premium for the upgrade. Should be an interesting comparison.
I just replaced my 2020 6.6 duramax i was getting 15 mpg combined (i iddle a lot) im in a 2024 now and im getting 11, same user same driving same everything! Something aint right with this truck!
6:31 you should also include that fuel economy is not the same as emissions. a common fallacy the anti-emissions people (I'm not saying they're good, I'm just saying they work) use is that "but mah old truck gets 20mpg!" line, when in reality a 20mpg pre-emissions truck is SIGNIFICANTLY dirtier, upwards of 97%, than a 15mpg emissions-compliant truck. I've always wanted to do testing on various diesel trucks to see the difference, and would love to organise something like this but it's so impossible to get a large enough sample size to make a meaningful argument.
Alex. Are the mpg in US gallons or Canadian Imperial gallons? I say that because most the American vehicles convert from litres to gallons in US gallons, not to Canadian Imperial gallons.
I believe he is using the US gallon and miles theme for the usa viewers, I am one of those that in turn take the us measurement and convert it to imperial due to ... well my vintage you could say.
2024 GMC 3500 Duramax with 3.42 gears i have 5700mi on it Getting 15.8 mpg driving it empty and 9.0-9.5 whit our fifth wheel camper on back combined weight of 20400lb. We love the truck but the fuel mileage REALLY sucks Our neighbor up north must have better quality fuel than the shit we running in the states.
average for me at 6400 miles is 15.8 overall. Best has been 24 with perfect condition. At 5800miles the MAP sensor was pretty bad, cleaned and gain some mpg back.
2024 2500 Dura with approx. 3500 miles. I drive approx. 80% highway, 20% city. First few fillups calculated mid 18 mpg but been sliding downhill each fillup. Im now in the 16 mpg range, staying pretty close to the computer calc. Unsure why im sliding downward but thats real world data. Great videos, thanks for the content!
Clean your MAP sensor, had 5800 on my 24 and it looked nasty. Clean its up and gained 1.5 mpg back. It’s now part of my service interval. Single filter for fuel can also gunk up quick and impact your mpg. Check airfilter too.
Highway driving, my 2020 gets just a little better than 20 MPG, city driving it drops down a lot to about 12. I had a 2003 Durmax with a 6 speed manual previous to this, and did about the same on the highway, but did better city driving at around 16. They both do about the same towing my 8500 lb boat at around 11-12.
3 month average on my gmc 2500 6.6 diesel is 17.09 mpg and I’m not gentle (most of the time) about 50/50 country / city (very little highway over past 3 months)
I have a 2024 L5P with 2,200 miles on it. Drove it from Washington to Southern California unloaded and averaged around 14mpg on the trip with it doing a regen every 150-200 miles. Driving 50/50 city/highway I’m averaging 10.8mpg now and it still regens every 150-200 miles. Has terrible turbo lag and throttle response and compressor surge that jerks the whole truck when it happens. My 2020 L5P was way better.
My 2007 4wd CCLB SRW LBZ will get 16-18mpg on road trips at 75ish. My 2024 4wd CCLB DRW L5P gets 17-18mpg on road trips at 75ish. Seems like emissions isn't killing the economy these days.
Ummm.. Pretty sure "Passive Regen" is when the exhaust system is hot enough to burn off soot without assistance (such as towing heavy loads). "Active Regen" is when the system starts dumping fuel into the exhaust to heat up the exhaust and burn off the soot.
Dont know if the computer in that vehicle is the same as mine, but it might have a set amount of miles it averages over. (25, 50, 450) Meaning if it was set to 25 or 50 you were "deleting" some of the city miles as you drive the hwy miles, thus making the average on the computer look better.
Mine get good mileage if your cruising around...but who doesn't wanna hear that engine?? The highway mileage gains..I left lafayette and headed to new orleans, truck showed a range of 300 miles...got to laplace and my range was at 345 lol 5hrs round trip burnt just over 1/4
I would love if someone bought 2 identical truck and 2 identical weight drivers remove the current emissions equipment on one and do the same fuel economy test. and weigh the deleted parts and add that to the other truck.
2007 classic LBZ, hand calculated around 20.5 with a PPE economy program at 75mph average (straight piped, with a larger down pipe). My 2019 L5P computer indicated 22.3 best 400 mile on the trip, probably average 80mph, usually set cruise at 88mph rural interstate (Completely stock 😔. My LBZ is at 180k miles and my L5P is just over 205k miles. Any chance if I clean the MAP sensor it will get better fuel mileage? Very pleased and reliable with very few repairs on both engines.
I have a 24 duramax with ~8k on it and o would be pumped to be getting 18+. Im getting more like 16 best case and 13 for a tank. I tow a 10k travel trailer and am getting about 9.5 mpg towing. All worse than I was expecting. It’s still a great truck but the mpg is not great.
I am Needing to bump up to a HD truck. I have watched all of your videos. In doing a pros/cons comparison in the 2024’s is one truly better than the other when deciding on a new duramax or powerstroke????????
Considering your conditions were optimal, I'd say that's not so great. There's no traffic anywhere, there aren't a ton of red lights, you're able to keep a steady speed, you don't have to blast the air conditioning and you drove like grandma. That's really the best that anyone could hope for. That said, it's better than any truck I've ever owned.
My 24 fuel economy has been pretty close to EVIC readout . But I’m not impressed or disappointed with it. 17 ish empty +or- depending on weather and other factors 10ish towing. Pretty much where my 2011 Cummins (and it’s deleted) is at. Along with previous diesels I’ve owned. I bet if I did 65 on hwy it would go higher but who really does that. I’m 70-75 MPH on HWY. If I did 80 I bet it’d be 15 mpg without a trailer.
Lets also keep in mind that a crew cab with usually no more than a driver and maybe 1 passenger and rarely any passengers in the back isn't doing these trucks any favors on weight efficiency. I've been struggling to find a regular cab Duramax looking online because the manufacturer and dealers want to sell that extra big extra pricey truck that has no practicality for what I need. So far I found 1 that according to the dealer listing $55,000 So of course you don't pay sticker so I offered $50,000 cash and they denied my offer so on top of the fact that the truck I want is hard to find but hard to buy for a reasonable price. 🤷♂
@@epickleuva Good, you found one that worked for you. It's why we have a few options. Duramax and Cummins isn't for everyone. I'm not a big fan of the 6.7L Powerstroke. It works for you though, good luck.
My 05 chev 1 ton duelly gets 11.5 l per 110 k going 110 km I won’t complain anymore I stripped out all emissions and installed abanks exhaust and air intake and upsized my rad I can tow now and never overheat and it’s in mint condition I’ll keep my 130k in the bank new trucks are overrated
LMM that is now an .....LBZ breathing very freely but no aftermarket parts. on 35 inch tires and Stock 3.73 gears behind Alison 6spd. , same type drive gets 18.8mpg avg. She'll hustle a 13,000l b 5th wheel up Appalachian grades accelerating strongly.
I dont understand these clips or these comments. You buy an almost 4 tonne truck tow 5 tonne and want the fuel economy of a tesla. What the hell did you expect 10 litres on 100km
I have a 2024 GMC Denali 3500 DRW. Mine gets ~ 12 MPG city and if its not doing a regen it will do 20 on the freeway on a short trip. The problem is it does a regen every 180-200 miles if i'm not towing anything. It regen's constantly when unloaded. Towing my 24000 lb 5th wheel i get between 7.5 to 9 regen's happen less frequently at around 400 miles.
They all have issues. Torque the crank bolt to the proper torque And you won't have an issue. Cummins eats the grid heater bolt. Powerstroke still uses the CP4. You can pin the crank on the Duramax. Change the intake horn/grid heater. Powerstroke can be swapped to a DCR pump. Easy fixes for all of them
Have a 21 Duramax with 55K miles on it, recently had 2 long unloaded road trips, 400 miles and 1,200 miles round trip. Both trips I averaged 20.5 mpgs with one regen in each trip. Towing my 9,500lbs 5th Wheel, I’m averaging 10.6 mpgs. Trucks big so the weather plays a huge role. If its windy, fuel economy is horrible that day but overall I’m shocked with how good the fuel economy is. Have the banks idash, truck regens every 800 miles regardless of where my DPF% is. Love your reviews, you are where I found out that I need to clean my MAP sensor. Do it after every oil change now.
LIER
@@WOODduck-u2e Aww man, completely forgot you were there lol
Have had both 6.6 and 3.0. Love em both. But for light hauling under 9k lbs and general around the county driving i prefer the 3.0. But for heavy hauling over 9k lbs and faster driving like 70 mph and above, 6.6 all day & night long. More power more money, always.
It’s almost like those people that insist on having a diesel to idle around town and occasionally run down the highway and maybe pull an aluminum fishing boat are surprised when the truck does a regen all the time and sucks the fuel down
Define just going down the road? lol what kinda trips we talking about
@@kyleryneost short trips never working the truck and getting the exhaust hot enough to do a passive regen but they just had to have a diesel because it’s a status symbol
And pussy footing it to save on fuel... I bought a gasser HD truck because I knew I wouldn’t need the diesel.
@@badopinion you bought the gasser because you flunked out of school and you are poor. Stop projecting.
@@JimmyCasket02 you sound like you are fun at parties. What's your wife's boyfriend think of you using his internet?
I have the 2024 2500 High Country with the Duramax. Only have 550 miles on it, about 65 miles of it towing my 12K 5th wheel. I bought it specifically to tow my camper and not as a daily driver around town. I did not look at fuel mileage only because it is so new but, glad to see the normal fuel economy is pretty darn good. I have a Volvo XC90 and get 21 MPG at best running around town and what not. Pretty amazing for a truck of that size and weight. Great video. Thank You.
I’m quite happy with my 2024 Chevy 2500. Duramax gets about 20 on the flats Highway driving. With my 7000 lb camper, it drops to 12-13. City driving around 14. Not quite as good as my 2019 F150 5.0, but I never worry about the climbs or the wind pulling that trailer. Thanks for your review!
I'm getting 17 L / 100km on my 2024 chevy dually cab & chassis. So far I've put 2700km on it. For its size I'm very happy with it. Thanks for your videos. Cheers.
My 2023 L5P GMC Denali dually will get close to 18 mpg highway, but I am pretty disappointed with my towing mileage. When towing my 15k 5th wheel I am down to 7.5 mpg average over 600 miles. Granted I had some pretty strong winds on the last trip, this seems a bit off to me. My last truck was a 2017 L5P 3500 SRW and I averaged 9.6 mpg towing the same trailer. Both trucks had Banks Derringer tuners and Banks Cold Air intakes. Regarding the intakes, with the factory intake and 8000 miles on the odometer I was only getting 200-250 miles between regens towing heavy. Then I added the Banks Cold Air Intake and now I consistantly get 650-700 miles between regens while towing. What is really interesting is that when watching the soot load with my Banks I dash I can watch the soot load decrease while towing and now the truck usually goes into regen because it has timed out and not because it is full of soot. Very interesting. I have sold a few of my friends the same set up and their results are the same, much increased distance between regens!
When running empty and hand calculating my mileage, I am usually getting 1-1.5 mpg better than what the computer shows, but after my last trip loaded the computer was pretty close.
I will also add that I increased tire size from the factory 235/80R17 to a 255/80R17 that is about 1.5 inches taller. Now my speedometer is dead on accurate, but with the factory tires I was showing more miles traveled than I actually was going as verified by my gps.
‘24 2500 HD duramax 1200 miles. 75 mph on interstate about 17 mpg, 62mph on two lanes about 19 mpg, mix in town and expressway 14 mpg. It a 7800 lb truck. I’ll take that! 86 k20 with 4:10 and 350 4 barrel was happy to see double digits!
Running a 2024 Silverado RST with the 3 litre Duramax. Primarily highway driving. Averaging 8.2 L/100 km. Love it!
The sweet spot on my ‘24 Duramax is 70mph. It’ll get to 22 mph if I go 70 for a long time.
The truck has 1400 miles on it and I’ve done 2 regens up to this point.
2018 duramax. 11-12 liters per 100km in the highway. About 14-15 per 100km city.
Had a 24 Silverado Duramax as a company vehicle for about 6 months before ending up in a 23 Superduty 6.7 (SO). The Duramax was getting about 15-16 mpg mixed driving. Also regened 250-350 miles. Superduty getting about 2mpg better and regen only happens every 500 miles with computer showing 60% DPF load. Same driving habits. Otherwise I loved that Duramax.
Fair enough! I think both the duramax and power stroke platform are solid choices. But for whatever reason is does seems like the druamax engines are less efficient with more frequent regens exactly as you experienced
Some specs are missing, rear axle ratios, transmissions, is Ford a 10 SPD, 2 or 4WD, one ton(dually) bed length, tonneau cover, tires and pressures. Oddly enough ambient air temperature, The colder the worse the mileage like 2-3 mpg less. I've got a Dodge Laramie 3500 quad cab, 4WD, SRW, 8' bed not covered 5.9 Cummins no mods, 48 RE trans, 3.91 axle ratios 5.9 Cummins, currently my AC condenser is off vehicle so whatever difference that makes to the air to air/charge air cooler is unknown. city 16 mpg, hwy/frwy 22 mpg plus, approximately 60 mph seems to be a threshold, 70 mph is 20 mpg, 80 mph is 16 mpg, 90-95 mph is 11+/- mpg. Normally I drive for mileage and I assure you accelerating up to speed makes a big difference but you don't want to anger other drivers with lake freighter takeoffs, besides after driving like this the black smoke pours out during hard acceleration. Goodyear all terrain tires 265/70x17 (121) 60 psi front, 70 psi rear. Although I haven't done this to my pickup I had a 1989 Chevy hi top Kellogg conversion van just a good wax job was worth 2 mpg from 12.1 to 14.1 mpg driving roughly the same, say this because when you put in the effort you tend to influence your made a difference hypothesis somewhat
Sorry, 200,000 miles on vehicle
Some context on mileage. One of the cars I learned to drive in was a 1978 Buick LeSabre. It had a 350 v8 with a 2 barrel carb and a 3 speed automatic transmission. On a trip from where we lived in Georgia to Michigan to visit relatives we got 17 mpg.
I've been tracking my 2024 Duramax since August. Its a combined towing, city and highway. Here's what my Fuelly Log shows: AVG 13.2 MPG, LAST MPG 14.5, Best MPG 18.5, 17,918 miles tracked, 60 fuel logs. In comparison, my 2022 Ram 2500 6.4 hemi with 4.10s, had 15,424 miles tracked with an AVG MPG of 10.3 and 15.0 BEST MPG, doing the same combination of towing, city and highway. Both trucks are stock with tonneau covers and using a lot of cruise control and maximum speeds of 70 mph.
Ask any Chevy driver and they will answer, "28 mpg". Everybody knows that. Of course it will be way better than an inline 6. Less reciprocating pistons. That's why every big rig on road is running v-8's.
I just reset the trip computer and ran a tank through on a 2017 Denali HD 3500 and it averaged 11 mpg, rural driving.
2021 L5P 18mpg empty sounds about right. You can get more if you're keeping it under 70mph on flat ground, maybe 20-23mpg. I clean that MAP sensor everytime I change the oil. Besides getting a poor quality DEF check engine light once, I've never had any real issues with the duramax. I don't like the 10spd though, I wish they put an 8spd in it, or made the gears longer, seems like the truck has plenty of power, but you're always shifting and not putting the power down.
You want to know for sure what a modern diesel engine is capable of when it comes to MPG at a given performance level? Delete it, don't put any crazy tunes on it, but run it without all that junk bolted on (for science!) and see. Apples to apples comparison right there...
People have been doing it for years, the concept isn't rocket science; you have an engine that basically runs like an air compressor, if you want it to run efficiently, then let it breath and don't force it to pull exhaust back in as well. You wouldn't have people wasting DEF fluid, you wouldn't have an SCR system THAT INJECTS DIESEL into the DPF during active regens, and you wouldn't be wasting all the extra diesel fuel in the decreased fuel efficiency from the air restrictions created, fuel burned during active regens, and weight added with all the added emissions equipment and extra DEF fluid that you have to haul around. Modern diesel emissions standards, and ICE emissions standards in general are pie in the sky lunacy brought about by your friendly Karens at the EPA who can't help themselves when it comes to telling everyone what to do.
I got my 2021 l5p deleted and all its problems magically disappeared. It also gets better mileage
Absolutely! There is the one and best solution to all the problems these trucks encounter. Once this is done, these trucks become much less to own, and of course fun as hell to drive.
My 2020 cummins 3500 HO with a 75hp tune is averaging 10.5 l/100km on the dash right now in northern bc. This includes 10 to 15 min warm ups in the morning and a mix of highway, city and country drives to the cabin. On road trips through the rocky mountains driving 100-115 km/h and passing ive seen as low as 6.4-6.8l/100km.
I going to take a wild guess and say you lost your emission systems in a boating accident shortly after purchase?? just a hunch😉
@@GettysGarage haha something like that! Love the videos!
That's a dodge for ya !!!!
Seems a bit outlandish, especially the 6.8L figure. I occasionally see comments like this, but then the vast majority seem to be over 12L/100km. I know driving habits play a big role but still there always seems to be a fairly big discrepancy when people report their fuel economy. If there is a Fuelly or other record to share to show the detailed fuel up history, I am definitely open to it though.
@@ALMX5DPsees his truck get 10.5L on the hwy once and now he tells everyone that’s his avg “with warming up”. We all know it’s BS. It’s the same as guys telling you their golf scores. 😂
And you’re right. Without the fuelly app it’s non sense to listen to these guys. On the GMC group with the 3.0 duramax everyone brags about 30+mpg. Then the app came out with a function to show lifetime fuel average. Most guys were showing between 18-24mpg and the odd guy 26 or 27.
My 2024 duramax got terrible milage until the engine got 9k miles. Towing 8k I get 16 and unloaded at 65 I get 24 mpg, this is with 37 inch tires on a zr2 2500hd. When the truck had 2k Miles best was 12 towing and 17 unloaded
I full time rv pulling my 5th wheel toyhauler in my 2008 2500hd clapped out 280k miles with blown head gaskets pulled my rig and never asked for nothing but more coolant got better fuel milage but this 2024 I bought needs a box of def every 1000 miles and barely gets 7mpg pulling where as I used to plan on 10 mpg in the old truck I regret my buy so far and I haven't even got the 1st oil change.
My Silverado 2500HD Duramax LP5 (2nd Gen) got relatively bad mileage for about the first 1000 miles - 16mpg on the highway and12-13mpg overall. That was a real shocker coming from my 2013 2500HD LMN that had the 6-speed Alison and was a 4x4. It got 16-17mpg overall and 21-22mpg on the highway. I live in Central Florida with no hills or snow.
Now that I've got nearly 2000 miles on my new truck, the mileage has shown a marked increase - 20+mgp on the highway and 16+ overall which is approaching that of my former truck. I think this may be due mostly to the engine management systems learning my driving style and the motor breaking in as well. I can tell the computer is learning as time passes - for example, when new and under acceleration from a stop with a constant pedal position my truck would really surge after about 2 seconds from taking off, without me pressing the pedal any further down. Now that behavior is not nearly as noticeable and acceleration is comfortably constant when taking off from a stop.
In my former truck I could always tell when it did a regen, because the instantaneous mileage dropped to11-12mpg regardless of where I was driving.
I bought my 2024 L5P to tow and haul everything all the time. 30,000km on my truck not once have I looked at the fuel economy. It’s a truck, the fuel economy is gonna be different based on weight being hauled. If anyone is concerned about fuel economy when buying a Diesel truck you may as well just not buy one lmao
I had a 2015 LML with a lift pump and tune. It's mileage was much better than my 2024 L5P. But, I give this thing a tune, a lift pump and oversize tires to get my gas mileage up. It's worth noting that the 2024 3500 is 1,100 pounds heavier than the 2015 2500.
My little 2.8l's best run was 6.2 l/100 over 1060km on a Saskatoon and Winnipeg trip.
Mine is sitting at 7.8 right now. Usually it’s at 8.3 or so. The 2.8 is amazing
16000km Denali 2024 now getting 11.2litres small mix 18km backroad and little city mostly hiway . 22 ram 3500 15.8 litre now 20000km still in halve winter blend fuel and makes a difference for sure both in coop diesel
Trx finally seeing 15.1litre mostly hiway same mix of city and backroad but usaually 18.9 litre average 46000km 2021 with ram bar etc for weight reference only
2022 Ram 3500 HO Cummins 12k miles. Purchased in Ohio and drove it 2200miles home to Las Vegas Nevada in early March 65-80MPH the whole way. 22MPG on the computer, math -wise 20.8MPG.
Yep spot on. 17-18 mpg average. On a long trip it’s 20 on the computer, but I haven’t verified that manually at the pump. And yes lots of random regens that will take it down to 14 mpg. I guess this depends on usage, but for me I’m guessing every 200-250 miles it does a regen. Road conditions, load, and how you drive doesn’t seem to matter…it’s all about the engine. I can’t figure why it’s only 10-12 mpg towing only 3-4k empty or full trailer…I’d think empty trailer would give better mpg, but it’s as if the truck knows it’s towing so just drinks double the fuel.
No tow, I've seen 21.4 mpg (U.S.)/25.7 mpg (IMP) with my '23 2500HD Denali. I use it almost exclusively for road trips, mainly highway, so when regens happen they mostly take place when all combustion components are hot, to begin with. I haven't noticed any fuel economy harm caused by regen.
The technical information you include in your is quite interesting and allows us to better understand the emission requirements and how they limit a diesel engines MPG. I will come up with a similar 85 mile route here in upstate NY and report MPG with my 2024 2500HD gasser. 87 octane fuel here is about 80 cents/gal less, we run no DEF and don't pay the $9000+ premium for the upgrade. Should be an interesting comparison.
I just replaced my 2020 6.6 duramax i was getting 15 mpg combined (i iddle a lot) im in a 2024 now and im getting 11, same user same driving same everything! Something aint right with this truck!
I’m getting the same mileage in my 2024 and I also had a 2020 that got way better mileage
6:31 you should also include that fuel economy is not the same as emissions. a common fallacy the anti-emissions people (I'm not saying they're good, I'm just saying they work) use is that "but mah old truck gets 20mpg!" line, when in reality a 20mpg pre-emissions truck is SIGNIFICANTLY dirtier, upwards of 97%, than a 15mpg emissions-compliant truck.
I've always wanted to do testing on various diesel trucks to see the difference, and would love to organise something like this but it's so impossible to get a large enough sample size to make a meaningful argument.
Thanks!
I’ve had a 22 and a 23 both on there best day 14-16 mpg stock or with the lift kit
Alex. Are the mpg in US gallons or Canadian Imperial gallons? I say that because most the American vehicles convert from litres to gallons in US gallons, not to Canadian Imperial gallons.
I believe he is using the US gallon and miles theme for the usa viewers, I am one of those that in turn take the us measurement and convert it to imperial due to ... well my vintage you could say.
2024 GMC 3500 Duramax with 3.42 gears i have 5700mi on it
Getting 15.8 mpg driving it empty and 9.0-9.5 whit our fifth wheel camper on back combined weight of 20400lb.
We love the truck but the fuel mileage REALLY sucks
Our neighbor up north must have better quality fuel than the shit we running in the states.
My ram 3500 Cummins 17-18 in town 70 mph 22 all day long on my 2019 Cummins 40%fewer moving parts
My '18 L5P is usually between 1.5 - 2 MPG optimistic on the computer.
Interstate... I am usually between 17-19 MPG hand calculated.
average for me at 6400 miles is 15.8 overall. Best has been 24 with perfect condition. At 5800miles the MAP sensor was pretty bad, cleaned and gain some mpg back.
2024 2500 Dura with approx. 3500 miles. I drive approx. 80% highway, 20% city. First few fillups calculated mid 18 mpg but been sliding downhill each fillup. Im now in the 16 mpg range, staying pretty close to the computer calc. Unsure why im sliding downward but thats real world data.
Great videos, thanks for the content!
The absolute bogus emission systems getting clogged up.
When did you buy? Could be the switchover from summer to winter diesel
@hitempguy Bought in March 2024...definitely could be the switch, but didn't realize it made that much of a MPG difference. Thanks
Clean your MAP sensor, had 5800 on my 24 and it looked nasty. Clean its up and gained 1.5 mpg back. It’s now part of my service interval. Single filter for fuel can also gunk up quick and impact your mpg. Check airfilter too.
Highway driving, my 2020 gets just a little better than 20 MPG, city driving it drops down a lot to about 12. I had a 2003 Durmax with a 6 speed manual previous to this, and did about the same on the highway, but did better city driving at around 16. They both do about the same towing my 8500 lb boat at around 11-12.
3 month average on my gmc 2500 6.6 diesel is 17.09 mpg and I’m not gentle (most of the time) about 50/50 country / city (very little highway over past 3 months)
I have a 2024 L5P with 2,200 miles on it. Drove it from Washington to Southern California unloaded and averaged around 14mpg on the trip with it doing a regen every 150-200 miles. Driving 50/50 city/highway I’m averaging 10.8mpg now and it still regens every 150-200 miles. Has terrible turbo lag and throttle response and compressor surge that jerks the whole truck when it happens. My 2020 L5P was way better.
That’s how my 2017 is running currently, just averaged 11 mpg after a tank of fuel. Also truck is shaking at stop lights.
My 2007 4wd CCLB SRW LBZ will get 16-18mpg on road trips at 75ish. My 2024 4wd CCLB DRW L5P gets 17-18mpg on road trips at 75ish. Seems like emissions isn't killing the economy these days.
The emissions is exactly the problem. Mine fell off my Cummins 5 years ago. Went from 11 mpg to 19
Ummm.. Pretty sure "Passive Regen" is when the exhaust system is hot enough to burn off soot without assistance (such as towing heavy loads). "Active Regen" is when the system starts dumping fuel into the exhaust to heat up the exhaust and burn off the soot.
Dont know if the computer in that vehicle is the same as mine, but it might have a set amount of miles it averages over. (25, 50, 450) Meaning if it was set to 25 or 50 you were "deleting" some of the city miles as you drive the hwy miles, thus making the average on the computer look better.
Mine get good mileage if your cruising around...but who doesn't wanna hear that engine?? The highway mileage gains..I left lafayette and headed to new orleans, truck showed a range of 300 miles...got to laplace and my range was at 345 lol 5hrs round trip burnt just over 1/4
I know it’s an older engine, but would you consider doing a video on the Titan with the 5.0 Cummins? There are a lot of them on the used market
My 07 lbz gets 26mpg at 70mph unloaded. Towing my 15k lb 5th wheel I get about 12mpg
my 2024 Silverado Duramax averages like 11-12 MPG.. Im starting to wonder if there is an issue
Mine too, I average 10.8mpg
Ill get 20 in my 2022 powerstroke then regen hits and its 17. All depends on how often your in regen bc that kills it
I would love if someone bought 2 identical truck and 2 identical weight drivers remove the current emissions equipment on one and do the same fuel economy test. and weigh the deleted parts and add that to the other truck.
Passive regeneration does not use any extra fuel. Passive regeneration occurs when exhaust temperatures sustain above 600 degrees Fahrenheit.
I'm glad I'm in ontario for once the diesel prices in Toronto are around 1.599 and gas is around 1.719
Auto start stop is a gimmick
Quick question: new to me 3500 Cummins. Diesel additives like Hotshots, Power Service etc. worth it or snake oil???
They are very Important for proper atomization 😊
Anyone know of being able to delete the 24 dura?All the shops I've talked to in BC say not yet and maybe never.
2007 classic LBZ, hand calculated around 20.5 with a PPE economy program at 75mph average (straight piped, with a larger down pipe). My 2019 L5P computer indicated 22.3 best 400 mile on the trip, probably average 80mph, usually set cruise at 88mph rural interstate (Completely stock 😔. My LBZ is at 180k miles and my L5P is just over 205k miles. Any chance if I clean the MAP sensor it will get better fuel mileage? Very pleased and reliable with very few repairs on both engines.
I have a 24 duramax with ~8k on it and o would be pumped to be getting 18+. Im getting more like 16 best case and 13 for a tank. I tow a 10k travel trailer and am getting about 9.5 mpg towing. All worse than I was expecting. It’s still a great truck but the mpg is not great.
I am Needing to bump up to a HD truck. I have watched all of your videos. In doing a pros/cons comparison in the 2024’s is one truly better than the other when deciding on a new duramax or powerstroke????????
2017 I get about the same. If I baby it I can get 19-20 mpg
Considering your conditions were optimal, I'd say that's not so great. There's no traffic anywhere, there aren't a ton of red lights, you're able to keep a steady speed, you don't have to blast the air conditioning and you drove like grandma. That's really the best that anyone could hope for. That said, it's better than any truck I've ever owned.
Time to go back to the pre emission systems. add some more cetane to the diesel fuel and now you've got your 35mpg back.
Sounds like a intentional flaw knowing the filter has to be cleaned you make it to were the only good way to do so is to drive a lot
I mean. Emissions aren't helping but don't you think the fact it makes twice the power of pre-emission variants is probably more significant.
Still looking forward to your midsize truck reviews
My 24 fuel economy has been pretty close to EVIC readout . But I’m not impressed or disappointed with it. 17 ish empty +or- depending on weather and other factors
10ish towing. Pretty much where my 2011 Cummins (and it’s deleted) is at. Along with previous diesels I’ve owned. I bet if I did 65 on hwy it would go higher but who really does that. I’m 70-75 MPH on HWY.
If I did 80 I bet it’d be 15 mpg without a trailer.
This was a great video!! So glad I bought the gas 6.6 Chevrolet as there is not a significant difference as compared to the cost. Thank you!
There’s a night and day difference if you want to hook 20k onto it and pull it around.
Gas truck isnt rated for 20000lbs.@@TheOMEGANOX
Until the next video, see you down the frickin road. Alex, snow has finally melted. Nice ride, 18 mpg sounds fair.
my 2024 ZR2 is bad on mileage. only at 3700 miles right no and hoping it will get better. I see 8-9 in the city and 12-15 hwy.
My 2024 AT4X gets the same mileage
My 23' GMC 3500 6.6 gas Dually gets 16.5 mpg unloaded
@6:25 the hood fit up is not good
What is your opinion on the future of diesel engine on pick ups?
My 2003 lb7 gets about 20 mpg city, 24 highway. Huh, good to know
Lets also keep in mind that a crew cab with usually no more than a driver and maybe 1 passenger and rarely any passengers in the back isn't doing these trucks any favors on weight efficiency. I've been struggling to find a regular cab Duramax looking online because the manufacturer and dealers want to sell that extra big extra pricey truck that has no practicality for what I need. So far I found 1 that according to the dealer listing $55,000 So of course you don't pay sticker so I offered $50,000 cash and they denied my offer so on top of the fact that the truck I want is hard to find but hard to buy for a reasonable price. 🤷♂
My 22 L5P SUCKED diesel. Was always in regen and was an absolute pig. So bad that I got rid of it and got a pre-Covid Powerstroke.
Sounds like the truck sat at idle a lot. Need to tow and use the truck. Gets the egts high enough to not have to Regen that much
@@countcuda70 no it didn’t. We towed 3-4x a week. Same trips with the Ford, regens reduced by 3-4x…
@@epickleuva Good, you found one that worked for you. It's why we have a few options. Duramax and Cummins isn't for everyone. I'm not a big fan of the 6.7L Powerstroke. It works for you though, good luck.
Is the truck estimating MPG in US gallons or Can Gallons? I have wondered about this on my truck...
Does the LB tow noticeably better than the SB you previously towed with?
Good job, Alex. Excellent video 😊
😂😂😂 real owner here , 2500 Denali 2024 diesel just did 500 miles 😢
90% highway 14.7 mpg 😊
True my 03 got around 20 mpg which is better then my 24…
12/13 round town with my 24..
I had a 2017 L5P that would get 21mpg. Now I have a 2020 L5P that only gets 17mpg.
My 05 chev 1 ton duelly gets 11.5 l per 110 k going 110 km I won’t complain anymore I stripped out all emissions and installed abanks exhaust and air intake and upsized my rad I can tow now and never overheat and it’s in mint condition I’ll keep my 130k in the bank new trucks are overrated
LMM that is now an .....LBZ breathing very freely but no aftermarket parts. on 35 inch tires and Stock 3.73 gears behind Alison 6spd. , same type drive gets 18.8mpg avg.
She'll hustle a 13,000l b 5th wheel up Appalachian grades accelerating strongly.
Mpg and mph Hell ya brother!
I dont understand these clips or these comments. You buy an almost 4 tonne truck tow 5 tonne and want the fuel economy of a tesla. What the hell did you expect 10 litres on 100km
I have a 2024 GMC Denali 3500 DRW. Mine gets ~ 12 MPG city and if its not doing a regen it will do 20 on the freeway on a short trip. The problem is it does a regen every 180-200 miles if i'm not towing anything. It regen's constantly when unloaded.
Towing my 24000 lb 5th wheel i get between 7.5 to 9 regen's happen less frequently at around 400 miles.
The mpgs on my ZR2 suck worse than the ghey emissions system.
Great video, awesome channel, handsome guy
How to delete it?
i get 13 mpg out of a 87 ocrane 6 4 hemi
87 costs 18 % cheaper
My 24 on the highway at 70-75 shows 21 and 15 in town is fine with me.
Plus diesel generally doesn’t get better until around 20,000 miles
Ya that’s basically what I experienced, and if it was my truck I’d have zero complaints about that.
12 round town….21 hi way…24 max
Overall not terrible.
Lookin good man
Don't be smacking the fuel pump and spilling diesel everywhere, Use gloves and keep it clean.
😂
2021 ram dully
13 to 15
Worry about how much we can haul not MPG’s……. Trade it in for a prius if your that person
For the casual truck driver they should buy the 3.0L Duramax instead.
Don’t forget to tell them about the mass air issue and the pins Sherring off on the crank…big deal!!!!!!
Mehh the pins off the crank seems overblown, but I don’t work for GM so take my opinion as you will
They all have issues. Torque the crank bolt to the proper torque And you won't have an issue. Cummins eats the grid heater bolt. Powerstroke still uses the CP4. You can pin the crank on the Duramax. Change the intake horn/grid heater. Powerstroke can be swapped to a DCR pump. Easy fixes for all of them
My lbz gets 19 mpg combined