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My 02 Impala LS (3.8 Liter) averages about 24 MPG. I have a bit of a lead foot. When my wife drives it is almost 27. Those are calculations based on odometer reading and fuel pump reading, the cars computer always gives a higher estimate. Also, my car is at 15X,XXX miles, so a lower mile one may be better. The 3.4 liter engine might also be better.

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16y ago

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