2008 Chevrolet Impala Consumer Review: Poor Mileage

2008 Chevrolet Impala - Consumer Review

Average Consumer Rating

179 Total Reviews

LT Sedan (3.9L V6 FFV 4-speed Automatic)

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Build Quality
Reliability Value
Poor Mileage
By Craig L. on


2008 Chevrolet Impala LT 4dr Sedan (3.9L 6cyl 4A)


I traded in my '03 Impala with 3.8 liter engine for this supposedly more fuel efficient model. The old Impala got 30 mpg on the hiway and averaged around 24. This new engine is getting 18.5 mpg on my commute and if babied on the hi-way will get 26 mpg. Also, if you decelerate and then want to accelerate quickly, there is about a 1 second hesitation before the throttle will do much. Really heart stopping in heavy rush hour traffic. Disappointed that this smaller car, with an engine that shuts off half of the cylinders to save fuel, turns in worse performance and way worse fuel economy than the old 3.8 liter engine. Also, OnStar should be an option only. Why pay for it if you don't want

Best Features

Has been reliable so far, good brakes, nice appearance, satellite radio is nice

Worst Features

Go back to the old Impala design. This one is a failure by comparison. Also delete OnStar. Fold-down seat opening is getting too small, mileage is poor, performance is marginal. The heat/cool rollers are hard to operate while driving. Remove the auto recirc/vent logic. This should be manual always.
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