Fuel economy from Mercedes gas and diesel engines!
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- Опубліковано 22 лип 2019
- How to get the best fuel economy from gas and diesel engines.
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In '80 I took a trip with my grandparents in a '79 300SD. Mind you we drove between 55 (the speed limit at the time) and 65. During the trip from Chicago to Denver. My job was to keep track of the fuel. We averaged 32mpg with one tank, east bound out of Denver we got 37mpg. This was with two stops and down hill with the wind, but still very impressive for such a large comfortable car.
My '06 Sprinter in mixed driving regularly returns 27. On the rare occasion I travel at a steady 55mph I get 35! (Along with more than a few single finger salutes, but hey, I'm in the right lane)
We haven't had any actual repair videos lately Pierre. Vlogs are great but your channel was built on quality repair tutorials.
I have filmed three repair videos this past month but thomas has not posted them.
@@mercedesclassicswithpierre1753 I would really like to know how to release a seat belt that is stuck in the lock position. How can I get that undone. It is a w124 87 300D. I see a button on top but it just slides up and down. So need advice.
@@yogib37 I would first pull very hard and very quickly on the seat belt. If that does not release it, then I would spray some WD-40 (a plentiful amount will do because it evaporates) onto the seat belt where it goes into the pillar, unbolt the end of the seat belt that is attached at the bottom of the pillar. I would then make the seat belt retract a bit and see if that releases it. If it does, then spray WD-40 into the opening on the pillar that the seat belt slides into and pull the seat belt out a bunch, but not all the way. Repeatedly retract and extend the seat belt to get the mechanism lubricated. I have done this to my 1983 Volvo 240 and it worked tremendously well. It doesn't hurt to pull each seat belt out and spray each with WD-40 and retract and extend them a few times to get the mechanism lubricated well. That will hopefully keep the other seat belts from locking up when you don't want them to. :)
@@jacobbelcher3512 let me tell you how this is strange. My drive way is kind of steep. so my seat belt locks. I put the car in the garage and it was level and it worked it moved like worked like it should, cool i will use this car for awhile then every time I use it and I am in my driveway it is locked one day i just backed out and got to the street and it worked. I guess for some odd reason it does that on a steep incline. so it is not an issue anymore. Thanks for the advise.
@@yogib37 Wow so your driveway is steep enough that the lockers engage? I have some spare seat belts for my Volvo 240 and when you tilt the winders, they lock up. I didn't know they locked with enough of an angle until I got the spare mechanisms. That's great that you got it figured out!
My 2014 C220 coupe diesel, 7 speed automatic rear weel drive gets around 44-46 mpg on longer trips- my record was 49 mpg on a 100 mile trip at night with no traffic and cruise control at around 55-60mph. It has been remapped to 220 HP and 500 NM from 170 HP & 400 NM. Best car I have ever had.
Haven’t worked out our 300SE at this stage but based on a few days driving to work it’s on par with your figures Pierre
But hey it’s a big car so it is what it is
It’s more enjoyment per mile or kilometres here
Great video Pierre!! I have reported about 19/20 city and 23 highway (staying below 75mph) from my 1992 190E 2.3 over the last 12,000 miles
not bad at all. once you reach 75 on the highway though they really seem to get thirsty. Still, the 1991 and later versions are more fuel efficient than the earlier cars
I have a 1994 turbo diesel S class and I get about 29 in PG on Highway 22 city which is really good
Hi Pierre, thanks again for posting another great video! Interestingly enough my 2003 g500 and my 1980 6.9 Euro get the same exact mpg. 12 city and 15 hwy. Cheers.
nice! 15 mpg in a 6.9 is impressive
My 83 240d 4spd at constant 65mph on the highway returns 35.7mpg consistently. Observed this when I drove it straight from flagstaff to Houston. No idea what it gets city driving yet.
Great info Pierre. 👍
thank you!
great data, thank you
thank you!
Hi Pierre. I know it's off topic but, when i turn the key, the ABS ligth from de cluster is off. Do you know to fix it? I have a 300SE 1990. Thank's. Alex from Brazil
Thanks for the info. Can you tell which engine is better petrol or diesel for the Mercedes w124 year from 1988 to 1993. Is 2.0 petrol better or one of the 2.5 or 3.0 turbo diesel diesels. Thank you. Greetings from Montenegro.
190d 2.5 auto with retrofitted turbo and intercooler.. some city, B (country) roads and motorway..
Keeping below 72mph, recently got 36.9
Daily driving the same to 75mph is about 34.
The motorway and city are partly balanced by only having 4 gears.
Great info Pierre. I always thought fuel economy tells you a lot about how good the condition is with all the engine systems and how well these cars are running. What about the 3.0 M104.980 kejet engines in the r129 & w124 140 chassis.
Thanks
John in Florida
r129/m104 is a good combo for fuel economy ...25-28 mpg. 300se....I think 20-25 mpg
I’d like to include the ‘05 and ‘06 CDI as a classic and l add that I got upwards of 38 MPG recently on a road-trip between Northern New England and NYC. Not so much going back as that’s mostly uphill and that was more in the 34 MPG range. This was at “normal” highway speeds and mixed use of the cruise control. I own 2 examples of this car and the other one has NEARLY 100,000 miles more and it actually does BETTER. The meter regularly says that I’m getting over 40. I’ve seen that meter over 50 on somebody’s car but then again those meters are HIGHLY suspect! Literally YMMV
✊🏾
So i just had to do an emergency run from just north of Seattle to Beatty NV recently. I left with a full tank and did not fuel again till i crossed Oregon state line. I was at half a tank and 276 miles later. 1999 C230 Kompressor 2.3L. This is the second one i’ve owned. Mine is sedan and first one was the coupe. both very good MPG. I was shocked though. I set cruze control to 68-70 and just drove. All total the trip down to Beatty was 95-100.00 in gas. ( over 1,000 miles total. ) I think it was 1,020 miles. These cars are underrated in my opinion. Engine is totally stock not modified in any way. Just well maintained.
yes the m111 engine is awesome. these cars were always media underdogs when new.
Mercedes Classic with Pierre Hedary Thanks for your reply and wonderful channel. What do you like best about M111 engine? I have as of today 212,000 on the clock. She purrs. However, anything i should watch out for?
Here are some of my stats:
1990 300SE 16 city. 20 highway. 1987 260E 17 city. 25 highway. 1980 240D manual transmission 28 MPG city. Highway does not go up very much. Maybe 30 MPG.
not bad at all though on the 240D. the 300se is about what I would expect. The 240D is better than I would have expected
@@mercedesclassicswithpierre1753 he would get better with the 240d with a Manual transmission and changing the rear differential to a 3.46 instead of the 3.69 or 3.96 / 4.06 that they came with.
Fuel....economy? Nope, no idea what that is. I have smiles per gallon. But they evaporate at the gas station XD
Lol so true with my w126 380se. $110 per week if I drove it every day, and because of that price, I don't drive it every day lol. What model do you have? I am hoping to have smiles per gallon that don't disappear at the pump with my w115 240d (recently acquired project that has a dead battery and hasn't been on the road in a while).
1981 300D with a 4-speed gearbox - I replaced the 3.46 final with a 2.88 from a 1985 300SD - speedometer indicates 55mph and the GPS shows 70mph. Highway mileage hangs around 32 mpg.
nice, how is the acceleration with the 2.88?
@@mercedesclassicswithpierre1753 What is this word "acceleration"? lol... She's slow off the line, but not that bad. It's nice to set the cruise while on the interstate and not have the engine turning so fast. I'm not familiar with auto transmissions enough to judge how it would be in one of those. I'm keeping my eyes on the local parts yards and pulling every 2.88 that show's up. It a good middle ratio that the car seems to handle well.
C200 kompressor 2002 model.
M111 engine / 4 cylinder.
Highway mileage = 38mpg
City= 21mpg
I’m getting about 28 miles on my 2014 Gl 350. Now my 95 W140 I get about 13 miles to the gallon.
1993 600sel 12mpg city 18 hwy.
I have gotten up to 21mpg.
1994 and 1995 s320 17mpg city and up to 24 to 28mpg hwy.
1982 380SEC 3.8L v8 is averaging 15 city and 20mpg hwy.
In my 1982 300CD, I get between 26 and 29 MPG.
Auto, turbo.
300cd always seems to be the most efficient of the w123s. they seem to chart towards upper 20s
Same. Also have an '82 coupe
Beats the hell out of the 8-14 mpg in my 2002 Mercedes. I can sometimes get 16 mpg when going downhill with the wind pushing me though. Love when that happens ;)
wow...8?
@@mercedesclassicswithpierre1753 w463 with a foot in it - my avg is 11.5 mpg currently
@@mercedesclassicswithpierre1753 update... just took a road trip and after 500 miles one way I averaged 14.9 mpg and 14.7 mpg on the way back. Not bad for a 7000 pound tank
Which one is the best fuel economy Benz e240 1997 to 2000 petro or diesel
Hi pierre i have an idea bout topic: rims and tyres...i studied quite a bit this very specific „ study“ my reason i started the walk in the wood was:
Can i exchange my 123 , 240d 14 inch rims ,with rims of a 124 15 inch... both rims are 5x 112 , so if u have the one rims lying around, why not use them? I have the right tyres that fit.... whilst we are there...can u shine a light on the tyres please....
I do not use rubbish tyres made in china, cause here in Belgium, we have rain, cold in winter....as well as warm summers,....we often find german quality ans french michelin, with very good safety garantees....
I think your followers might gain from your good down to earth insights, me i learned a lot about what first scares, what is all written on a tyre! My got, its simply chinees at the beginning, for us leymen....back to my initial question: do you have any thoughts on playing with the 14 to 15 inch ,on a 123 240 diesel?...a mercedes guy who claims to know his stuff, said that the 200d had 175 cm wideness, 240d 185 and the 300d 195 cm....does this say anything to you? I m curious what your findings are, thanks, Bob from Belgium , Europe
Can you make a short video on the uses of the fuel economy gauge and how it can be used to diagnose the engine.
good suggestion. if any more commenters second it then I will!
@@mercedesclassicswithpierre1753 I'll second it!
I have a rudimentary understanding (directly related to intake manifold vacuum pressure which essentially regulates everything, especially in cars with K-jetronic like my M110) but a more in-depth look would be appreciated.
@@mercedesclassicswithpierre1753 Judging by the comments below, it seems very few actually know how much information the so-called "economy gauge'" can tell you (upon start up/cold/warm/when accelerating, etc.).
It has less to do with "mpg" and much more do to with a practical way to diagnose the engine (aircraft engines have this as well :)
Yes this would be a great video. I like that the gauge is there and it is neat to watch it move, but I don't know what information I can gather from it, but I would really like to know.
When I Manual swap my 1991 300 sel I'm curious as to the mpg improvement over the auto
it's all in the final drive ratio
@@mercedesclassicswithpierre1753 so my research says that manual and auto w126 300 se and sel have the same rear ratios and the first 4 gears in the manual transmission are the same as the auto but the 5th gear is the big deal. So I hope with lighter trans, no fluid coupling, and an overdrive will give a 5 mpg ave boost.
I'm an even more proud 380SE owner after hearing those figures. I knew I had to be getting somewhere around 18mpg on my daily highway hauls. All hail tiny V8s!
That's good for you! My 380se gets 13 mpg around town. It will get somewhere between 15 and 17 ish mpg highway, but it doesn't get driven on the highway much. Which it should be driven on the highway more because that's where it's the most enjoyable. Keep yours going strong and enjoy it as much as possible! These old Mercedes are always wanting to be driven and they complain about it when they aren't. Happy motoring!
@@jacobbelcher3512 I'm in the middle of a full front end rebuild/restoration on mine. I look at it sitting in the garage every day and it makes me sick to see it not barreling down the Merritt Parkway, but soon enough it will be driving as well as it did in 1984!
@@AppleJack1997 I replaced the ball joints, tie rod ends, I am going to replace the drag link, installed KYB shocks (very good replacement for the price because I feel like Bilsteins are overpriced), new upper control arms. All the rubber is new, basically everything that moves in the front suspension has been replaced. Let me tell you, if you enjoyed driving yours before you started doing work to it, the end result is going to be amazing. You aren't going to want to stop driving. It made a huge difference and it really tightened up. There wasn't much play in the steering before, but there is hardly any now. The car doesn't dive ANY under hard braking, it has very little body roll, and the steering response is great now. It doesn't feel boaty anymore. It is just a very comfortable car to drive that handles incredibly well on backroads. I am excited for you and I would love to hear what you think about it once you're finished.
@@jacobbelcher3512 I'm super excited to finish now. I'm also replacing every piece of rubber, except for the torsion bar bushings. Being in CT for its whole life, the torsion bar ends had some rust. I ground the ends and welded on additional material, and gave them a few coats of paint. I'm hoping they're protected for life now.
The lower control arm, spindle, and a bunch of other parts have been sandblasted and painted. Everything looks brand new. Big motivation to reassemble when everything is nice and clean looking.
My 85? 230e with a 4 speed averages around 22-24 mpg going 65-70 on my daily commute to UCF
around town it’s usually less than 19 :/
the m102 really gets thirsty after 4000 rpm.
Thanks Pierre! Any figures for a w123 230 m115?
18-20 mpg if I recall my experience with two of these
Mercedes Classic with Pierre Hedary thanks Pierre 👍
I have a somewhat vague theory, that the W124 diesel engines, an extra cylinder, equals aroundish 1,5 liter per 100km.
My w124 250d non turbo wagon got around 7 liters per 100km, but my 190d, can get around 5,5 liters per 100km.
That theory, would allow for the 28 mpg of the E 300, which is 8.4 liters per 100km.
Again, it's a very vague theory, but i'm a little bit surprised that the e 300d can get these 28 mpg.
Maybe its performance would be worth the extra fuel consumption...
Yes, you left out the best of the lot, the W124 E280 with the classic 2.8 DOHC 104 engine. Here in Australia we go by dollars per journey, not MPG because when you want the best, you don't worry about the cost. BTW, we use 98 RON Premium Unleaded & get economy like you can only dream about.
What's your L/100km? I'm running a 280E in Germany, ex-Japan so I also use 98 Ron "Super Plus". The M104 2.8 is a fantastic engine, I love it! & has been running like a swiss watch for 5yrs now. On an Autobahn run averaging 114kph/3000rpm my consumption sits at between 8.5 & 9.3Lt/100km. I don't think I could achieve better given how well & how smoothly the car runs. Considering the ease & low cost of maintenance (& low road tax as a "H" vehicle) a newer car with better fuel consumption would just bite me somewhere else with repair costs etc that I can't do myself.
How about the w124 260E?
I think my ‘75 450 SEL is rolling a 5 now... at least it feels like it. I think like 175 miles on a full tank- yikes. I’m clocking a tank of gas this month again and will have to get back to you.
map sensor.
Mercedes Classic with Pierre Hedary I did the test on it a few months ago.
the MAP sensor did the resistance test on it on the two outer pins (7 and 15). Should be a steady reading of 70 ohms or so. Then checked the two inner pins (8&10) should be a reading of 360.
My readings:
91.5 ohms outer pins 7&15
335 ohms inner pins 8&10
The vacuum line is less than ideal- maybe that’s it because the map needs 15 inches of vacuum or it will run rich.
I will sort it out when it gets cooler. Thanks!
if you have less than 15 inches then the car will run super rich.
Mercedes Classic with Pierre Hedary Do I use a ‘T’ fitting to test that? Because removing the vacuum hose (to the map) the car dies.
Pierre, I am averaging 14.5 with my 500SEC. As low as 11 when I am being an a-hole. ;-) As high as 17 when I am babying it.
I just drove a rented base model Camry LE to NJ and back and averaged 34 mpg. :-) Hard to beat but sure as heck as stylish as a baked potato without butter.
wow, 11 mpg. I didn't even know it was possible!! Funny how when we take a road trip elaine still prefers we take a mercedes over her camry
my 1992 w124 230e makes 20+ mpg (city) and up to 30mpg on long autobahn trips
Is the 28 mpg for V8 400Es really plausible? Automobile-catalog.com shows a combined U.S. mpg average of 16.5. Fuelly.com is showing 18.9.
it is. they are very fuel efficient when driven at consistent speeds, thanks to their 2.25:1 rear axle ratio
Wow.. Now I understand why my 280ce M110 gives me 19mpg and the 230ce M102 8v only five me 20mpg! so an improvment of 1mpg and a loss of 50bhp. WIll go back the 280 when a find a rust free car.
I reckon I'd average 18 to 20 smiles per gallon in my R107 500SL, that's not a typo it's smiles.
you must drive it gently because they usually get 15!
My 87 300sdl gets 35mpg without AC on highway only.
US gallon or UK Gallon
You left out the e320 cdi , 40-49mpg highway 28-34 city and 30mph cruising at 130mph
my 1983 300D auto gets 25ish and my 1985 300CD 5 speed gets 28ish
sounds about right! the 5 speed should get high 20s
Rite on man, I averaged at least 30 mpg in my 1987 190d turbo 2.5. I miss that car. Got rear ended in it and insurance only gave me $800 for it and totaled it. I said, What am i gonna buy for $800 that gets me to work everyday and gets 30 mpg for that money. They said it's got 500,000 miles on it and rusted out, thats all were gonna give ya unless you want to hire a layer, oh well.
there's a guy in lake city, fl that has 8 of those cars. sorry for your loss
What of 200 gasoline
I get 18 to 23 MPG on my "63 230SL 127 engine
you should teach a class on how to drive those cars!
My 1977 280 CE gets as best 1,15 l/10km or 20,45 mpg and this is whit a five speed manual crusing at about 80 to 100 km/h or 49 to 62 mp/h. Average is 17-18 to mpg. Crusing at highway speed 120 km/h or 75 mp/h I get around 1,25 l/10km or 18,8 mpg. Sounds ok until you realise you have to pay 6,261 USD per gallon :(
well, life is too short to drive boring cars, right?
@@mercedesclassicswithpierre1753 Sure is! And someone have to cash up, I mean the goverment needs money to...
Here's my stats
1989 560 sel
11 city and 17 highway but if I'm cruising 84mph I can kiss 20 mpg!!
1991 300 sel 12 city and 18/21 highway.
sounds about right
@@mercedesclassicswithpierre1753 my 560 is receiving engine and suspention work and a very slight ride height drop via spring pad adjustment. Also tri y exhaust and a high flow catalytic converter and less restrictive muffler. I hope to gain power as well as efficiency. I will also ceramic coat the headers and downpipes to control underhood temperature and protect the newly rebuilt transmission from heat
I log my fuel economy with fuelly.
Over 3 months i've averaged ~30 mpg in a 1991 W124 250TD, 5 speed, wagon, non turbo OM602, almost regardless of how I drive it.
There's something not quite right with the fuel tank though. (Also the fuel sender; it doesn't read right no matter how much fuel is in there.) Maybe water. Maybe algae (fungus?) I drove 800 km and it started sputtering but I only filled up with 16 gallons. Theoretically I had 2 more gallons left in the tank. But I was losing power and getting a "misfire." I figured it ran out, but didn't get a "complete" fill, just the 16- ish gallons.
Previous owner said to just reset the odometer and fill up at 600km. Which i've been doing. I've treated the last two tanks with Star Tron, hoping it nixes whatever it is in the tank. I'll probably run a few more tanks with the Startron, then try to run it low and see what happens.
My 95 W124 E320 sedan averaged 25mpg (lots of long highway trips.) 10 years. Still have it.
My 94 W124 E320 sedan averaged 23mpg. 2 years. Gone.
My 91 W124 300E 2.6 sedan averaged 22mpg as well. 10 years. Gone.
My 1990 260E 5 speed manual is using about 16,5 in city and 26 on road, 55mph avg; don't forget that brazilian gasoline has 27% of ethanol and our streets are very smaller than in USA. The worst case, rush time with AC on gives me around 14mpg, and it hurts...
not bad....but it seems like the manual gas cars seem to have worse city mpg and better highway mpg.
@@mercedesclassicswithpierre1753 I agree, as the automatic gearbox is supposed to make the ideal changes in the city but slips at road speeds.
I'm not sure if my diff is shorter than the 300E's, I'll check the code at the next lift.
it is.
@@mercedesclassicswithpierre1753 Thank you, I was concerned about the corresponding speed at 5th gear, it was very similar to my Chevrolet Kadett E (1993) 1.8 litre engine. The 1st is really very short!
And the winner is w201 190D
as usual.
Wrong. Modern diesels are far more efficient than the W201 in any guise.
JAS GO GA A HANDA CRX THEY GAT 50AGALAN.