First full tank on my 1983 240D manual got 28.7 mpg on winter diesel....mostly around town, some highway. And my driving habits are, shall we say, not exactly conducive to fuel economy. Not bad...I'm pleased.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

That's about on par with what mine used to be.

- Peter.

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2021 Chevrolet Spark
Formerly...
2000 GMC Sonoma
1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles.
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S

My 1976-4-spd got 33 mpg on local roads (freeway speed up to 70 mph) in high altitude in Montana. After I sold it to Peter Hedary, and he tuned up the engine, he told me it was averaging 36 mpg around Miami, FL

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1983 300D, the "Avocado"
1976 240D, 4-spd the "Pumpkin", SOLD to Pierre
1984 190D, 2.2L, 5-spd, my intro to MBZ diesels, crashed into in 2002

Thats right about where my mileage is. Over the past year I've been averaging 27.9mpg. With a high of 30.7 and a low of 22.5. I don't see much change in mileage with winter diesel versus summer diesel, maybe a mile or two. But I live in a pretty mild climate and winters don't get all that cold, so the winter blend may not be as bad as it is else where.

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That's the kind of fuel economy I would expect. When I drove 240D's, 90% or more were highway miles and they did right at the 30MPG mark for the long term. To do that well in town, stop light to stop light would be pretty darn good mileage for one of these cars.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

My 300D 2.5 has been getting 33 average mpg on the freeway doing 70-75mph. My cruise control has been wonky so its mostly foot powered. I am hoping that the number improves when I fully fix up the cruise.

My daily commute is ~ 130 miles. Lately I've been doing fill-ups ever 3 days. I wonder if I could stretch it to 4 days. 4 days = 16.5 gallons of fuel... The tank is, what 18? When does the reserve light kick on?

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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

The cruise control guru with a wonky cruise? C'mon, practice what you preach!

Your total capacity is 18.5 gallons....light comes on with about 3 gallons left on my cars identical to yours.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

I'm working on it I think its a problem in my speedometer cable. I've been watching it, when my needle is smooth and steady, so is my cruise. When the needle shimmy and shakes...so does the cruise. New cable on the way! Alternator upgrade as well! After that lower sound encapsulation panels go back on!

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Just pull out the cables and put some speedo cable lube or graphite on it liberally as you feed them back in. Wouldn't hurt to clean them first.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

I think the cable MIGHT have been stretched/damaged a little bit when I dropped the transmission one of the times. I ordered a replacement cable a few days ago from MB.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

So far with 3 fills my 300D is at 28.3mpg.

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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.

That's good mileage for a five cylinder.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

I always got low 20's around town and seldom broke 30 highway with my 240d's. Stick. With a slushbox it was significantly less.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Yeah, low 20's in town is what I would expect too. That's why I was impressed by the in town figure posted by the OP. On the highway, over the long haul, I got almost exactly 30 on the highway. My trips were often fuel up, interstate until empty and fuel up again.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

Well this did start out for the 240D, so here is my figures from looking back in my fuel reciepts. we got the car with 306950K miles., four spd manual with the 3:69 Diff.

This is a trip to Portland, Or. from home, Calif. 4-29-10
30.70 mpg Grants Pass. freeway driving
28.83 mpg Tigard, Or. town/freeway
32.68 mpg Corning, Ca. freeway

Another trip to Portland, 4-25-12. this is after swapping in the 3:58 Diff.
Fueled in Lathrop,Ca. to...
33.56 mpg Wilsonville, Or. 634 miles, fully loaded, driving 65 - 70 mpg.
30.81 mpg in town driving around the Portland area. fueled in Woodburn about 20 mi so of Portland.
38.74 mpg keeping speed 55 - 60. fueled in Lathrop, Ca. 618 miles. Driving on I-5.

6-10-12
30.40 mpg freeway/town
31.77 mpg freeway/town
36.25 mpg freeway
31.91 mpg freeway/town
31.72 mpg freeway/town
30.26 mpg freeway/town
37.85 mpg freeway
35.39 mpg freeway
33.07 mpg freeway/town
30.16 mpg town
35.62 mpg freeway/town
31.27 mpg freeway/town
30.35 mpg freeway/town 11-25-12

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works