22 to 30 mpg.......depends.......

If you are worried about gas mileage, sell the Mercedes and buy a Yaris.

I sold mine at $215K

Driving 60:40 city freeway in my 87 260E gets me exactly 20.0mpg.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I drive them differently:

86 300E 5spd - avg 21-23 mostly highway and cruise control

78 280CE auto - avg 17-19 mostly city some highway BUT I LIKE TO GO FAST and tend to put a lot of foot into it - have seen as low as 14 with alot of 100mph runs and jack rabbitish starts.

83 300D - used to avg about 23 mixed IIRC

89 190 2.6 euro 5spd - avg 20 - with mostly autobahn and 160+ kpH speeds - I had a long run at 200 once that gave me about 14mpg but my foot was practically on the pavement for almost 3 hours until tank ran low. This car was pretty peppy to 160 and slower windup from 160-200 (pretty much top speed unless downhill). Oh and no AC it was Germany after all.

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John Hughes, was in Landstuhl, Germany but currently in San Antonio, TX


1978 280CE Astral Silver now 59,xxx miles and counting "Silber-Kugel"
1986 300E Black Pearl Metallic 143,xxx miles 5-spd daily driver w/ blk leather "Schwarz-Schönheit"
1989 190E 2.6 (euro) 5-spd Desert Taupe 112,xxx kms Had to leave behind in Germany!!! "Helga"
1983 300D Pastel Beige now 312,xxx + miles SOLD

OBK#24

Most of my driving is highway, I consistently get 29-32 depending on how heavy footed I am. I will say that a 30-50% of my highway driving is stop and go in traffic. It will drop to 27-29 during the summer with AC on. Best tank was 34.5.

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Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD

'82 300td 24 mpg average mostly at 60-65 mph

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Collector of Fine Hose Clamps
'77 240D 'AVA' is in heaven now
'80 240D Kanarienvogel
'82 300TD 343k was my daily driver 'ADOLPH' In Surgery for a severe Deer Bite to the Nose
'88 560SL 102k 'White One'

mostly highway... 24-25

30 +/- 2 to 3mpg highway in both the 300e and 300SD.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

maybe close to 27 mpg hwy without the a/c running!

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1990 190E 3.0L

Mine got 31 mpg across France to Brussels and back. Average speed there and back 60 mph and this included some town driving while in Brussels.

Mine is the 300-24 engine with Bosch KE (CIS) injection.

Also, our gallons are bigger.

Short journeys I estimate at nearer 20 mpg.

RayH

99 s320 I get 28.5 mixed driving.83 SD with 2:47 rear end 30 mixed driving.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

I love how people post their all time best FE on the highway with a tail wind and they claim 'ya, its my average'.

With my 2.6 5 speed I do mostly highway driving. In the 3 month I've owned it, FE has varied between 24mpg to 33mpg. The 33mpg was all highway, no AC, with mostly sub 70mph speed. I wish my mileage was better but it just isn't. One thing I have noticed is that the FE is about the same whether I use 87 or 92 octane with or without the R16 resistor. Megasquirt should improve on these numbers... if I ever get around to it.

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CENSORED due to not family friendly words

With the 450SLC, I've been averaging 16.4 mpg.. The lowest has been around 13.8 (when I've been trying to crack 100mph with her) and the highest has been 16.7.

With the 280E, it's been in the 15.8 - 16.2 range.. I have to pull the odometer and get it fixed. I've been using my Garmin Nuvi to keep track of the mileage between fills and it seems to be doing an OK job.

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M. G. Burg
'10 - Dakota SXT - Daily Ride / ≈ 172.5K
.'76 - 450SLC - 107.024.12 / < .89.20 K
..'77 - 280E - 123.033.12 / > 128.20 K
...'67 - El Camino - 283ci / > 207.00 K
....'75 - Yamaha - 650XS / < 21.00 K
.....'87 - G20 Sportvan / > 206.00 K
......'85 - 4WINNS 160 I.O. / 140hp
.......'74 - Honda CT70 / Real 125
.
“I didn’t really say everything I said.”
. . . . . . . . . . . . . . . . . . ~ Yogi Berra ~

I've averaged right around 23 mpg on every tank of diesel since I bought my car. That's usually with a lot more city than highway, but it really doesn't seem to matter all that much...

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1984 300D, 228k, Light Ivory, Java MB-Tex