just got a 2000 malibu ls 3.1 with 20,000 miles on it, and was was wondering what is the gas mileage on this city,highway also what is the most efficient speed on the highway. thanks

Welcome I have a 97 with the 3.1 and I would have to say I probably get in the range of 19-21MPG. Thats alot of regular driving just on roads, not alot of highway and no city.

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