I average 23-24 mpg with mostly freeway driving, but on a trip to Las Vegas last year I got 26 mpg with 100% freeway driving.

Not bad for a V8 with 300 hp.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

Not bad at all.

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)

It's astonishing, I have a friend that has a CLK430 (same engine) and he gets 27-28 MPG at a steady 60 MPH cruise. It gets about the same mileage as a W123 240D with almost 4X the available power.....

My C230 Kompressor gets 29-31 MPG on the highway, a heavy right foot with the associated supercharger activities can really take a toll on mileage. I suspect people that are getting lower mileage are using the right foot a bit more than I am.

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98 Dodge-Cummins pickup (137K)
13 GLK250 (157k)
06 E320CDI (341K)
16 C300 (89K)
82 300GD Gelaendewagen (54K)

I'm not sure what my freeway fuel economy would be if I cruised at 60 mph.

I'm sure it would be better than the 26 mpg I got on the Las Vegas trip. My average speeds were between 85-90 mph, with ocassional jaunts about 100.

The problem is that when you are in the middle of the desert, you lose your sense of speed, and when I'd look at the speedometer, my speeds were frequently inching above 90-ish. It's just the speed the car likes to run at.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

That's not a problem . I wonder what kind of mileage I'd get at 60mph...

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)

My C230K gets about 16-17 mpg in the city, but that's 3 miles a trip between home and work with a fair amount of lights and stop signs. The car barely has time to warm up before I'm there. 20 mpg probably isn't too bad, especially with the updated EPA numbers (supposedly more realistic) being 19 and 26. Also, if you have a heavy right foot, you can really eat into the mpg, even though it's just a 2.3L 4-banger.

Pure highway mpg on my last long road trip was about 30 mpg at around 90-ish.

Any one know the performance spec differences between the 2.3 and 1.8L? Were the 2.3L kompressors as well? Just curious.

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)

>>I replaced air filter, had an oil change and put in new spark plugs. Mileage around town is right at 20 to 21 mpg.<<

That is about as good as most people are able to get with pure in-town driving with a 230k in a W202 chassis.