I have a 99 ML320 and get very good mileage, both around town and on the road. Using the standard drive at the higher gear (which I assume everyone uses) I get about 17-18 in normal city driving on boulevards in Dallas, and over 25 MPG on the highway at 70 MPH ..... the way people drive their car makes a big difference in mileage of course. The 320 is a six; with the 8 cyl versions of this car, mileage will be less. (Actually, the ML mileage is very close to the mileage I get on my 95 Corvette, which has 26K on it; but with Overdrive on the highway goes to 25 or 26 MPG.)

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Ben Harrison Carter
1999 Mercedes ML320 87K
1992 Mercedes 300CE 89K
1995 Corvette 29K -- Sold Dec 09
1989 Mercedes 420SEL 99K -- (Sold 4/08)
1968 Mercedes 230S (106K) (Sold 9/06))
1976 Mercedes 450SEL 130K (Just sold - 06)
1961 Mercedes 220Sb (sold years ago)