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i get about 26 mpg on the highway with cruise control set to about 75-80 MPH. overall, if i check my trip computer, i'll get about 16-17 MPG for a tank of gas with a mix of city and highway driving. the worst i ever did was 9.6 MPG for a tank of gas. i know i was driving the car really hard for the entire tank, and it included a lot of city miles :)

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I get 20.8 miles per gallon , mixed highway / city driving with my 1999 (3.4 ) C2.

At highway speed 80-85 miles is goes up to about 21 miles per hour. I am driving in California. Generally I will chang gears at 4.5 to 5 k revs.

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