This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
My 2008 Chevrolet Impala was recently totaled, on star had diagnosed a problem with the app sensor, this was confirmed with the dealership and repairs were not covered by the warranty, the car is now in possession of my insurance company I had called previously and was told to call Chevy, the dealership is the only number I have. They are to dispose of this car, there is too much data here to not have turned over to Chevy and or nhtsb, especially since onstar also recorded the cross and the driver only had a knee injury.
We own 2008 Chevy Impala with 40,000 + miles. The engine light goes on and off. We often check if the gas cap is on tight. This usually helps. This past week, all we tried with gas cap did not help. We took car to GM dealer. There is a defect in the gas cap. However, the new gas cap cost us $80 parts plus labor and cost of analysis. We have owned many cars and never had to replace a gas cap. Even a car with 350,000 had original gas cap. This is unfair for owner to bear this expense. Thank you.
GM advertises that the 3.9 liter engine is supposed to get 28mpg and we can't get more than 25mpg in either of our Impala equipped with this engine and both cars have over 10,000 miles on them which according to the dealer means they should be broken in. I've talked to GM twice about it and they blame the epa for the advertised numbers on the window sticker so it's not their problem and the dealer doesn't know what to do but they have told me other customers with that engine have complained as well. Who does the testing on the cars to get the fuel mileage numbers that are on the window stickers? I thought the new numbers for 2008 were supposed to be more accurate then in the past. We've had four other new Impala (01,02,04,04) and they all got the fuel mileage advertised so why do the 08's with the 3.9 do so poorly?
GM advertises that mileage for average highway driving is 28 mpg. The car does not meet or even come close to this standard. I have tested mileage with 100% highway driving and the max mpg is 23. With some minimal off highway driving (to and from highway) the mpg averages 21 to 22. Off highway mpg averages 19. My investigations have found that GM has changed the final drive ratio. At 70 mph the engine RPM is 2,300. That is 300 RPM more that previous model years.
- Lansing, KS, USA
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- Lacygne, KS, USA