I surprisely could not find in the manual how many miles per gallon 260E normally runs??

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1987 MB260E 187K

The last time I checked, my 1989 260E returned close to 30mpg on a 450mi. highway trip at an average speed of about 70mph.
City driving should return arond 24-25mpg, driving.
Obviously, the heavier the right foot is, the lower mpg you get.
JackD

I am getting from 19 to 21 mpg with a speed from 60 to 100 mph on a highway and some driving in a city :-( with an oil leak on the front right engine side nearby a water pump and a failed emission test.

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1987 MB260E 187K

mine usually does around 19mpg as well.
I'm surprised to find out there's one out there that does 30mpg. that's unheard of but great !

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Whether you think you can or cannot, Either way you're right!. by Henry Ford.

Hi Everyone:

I average about 21mpg with city and highway combined.

Aloha,
Eric

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1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles

Our 190E 2.6 (same driveline) gets about 12L/100km's in city driving (20 MPUSG) and about 10L/100km's (24 MPUSG) on the highway, cruising at 125-140 km/h (75-90mph).

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John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif

Guys, you need to save gas and have your car tuned properly.
30mpg on a steady 65- 70mph cruise (flat road) is not unheard of, it is normal.
JackD

I can get close to that in the 190E, but I just can't go slow enough! The car humms so nicely at 140km/h, I just kinda end up at that speed. 24 US at 90mph is decent, methinks.

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John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif

My 1990 300E lately gets about 27MPG on the highway at 70-75 with a/c on. I'm well pleased.

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2012 E350
2006 Callaway SC560

alright someone please explain how to get 27mpg out of my 260E ?
i've done regular maint, plugs, wires, filters oxygen sensors. everything. so tune shouldn't be an issue !
what else ?

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Whether you think you can or cannot, Either way you're right!. by Henry Ford.

Doesn't the 260E have a steeper final drive? That might account for the highway mileage diff...

Of those that responded, how old are your O2 sensors?

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)

mine were replaced 6 months ago when it failed emissions and I had to get them changed along with the tune up / adjustments of all different kind to bring it back to specs.

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Whether you think you can or cannot, Either way you're right!. by Henry Ford.

My car is still using a little more than 9 liters per 100 km ( +/- 3.9 gal per 100 mi) with speed up to 120km per hour (on highways in Europe)? ( in the manuel they say 8.8 lit) . 380 000km 1988.

This car is great

My '90 300E O2 sensor is about three years old.

The 260Es are geared lower and the engine turns higher RPMs.

I've noticed a good bit of variation in mileage and power in different 124 cars.

My '90 mileage was about 25 on the highway for years. A few months ago I adjusted the lambda and now it gets almost exactly 27. I would not have expected the adjustment to make an MPG difference but it did.

Our '91 300E only gets about 25.5 highway. But it has more power than the '90.

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2012 E350
2006 Callaway SC560