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really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
57,623 miles

About These NHTSA Complaints:

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.

2004 Chevrolet Impala engine problems

engine problem

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2004 Chevrolet Impala Owner Comments

problem #4

Aug 022010

Impala 6-cyl

  • 100,000 miles


Pass lock system "security" light comes on and the car will not start. Happens randomly.

- Opelika, AL, USA

problem #3

Feb 142011


  • 125,000 miles
The contact owns a 2004 Chevrolet Impala. The contact was driving 55 mph when the vehicle stalled without warning and was crashed into by another vehicle. The contact sustained whiplash injuries and was transported to the hospital. A police report was filed. The vehicle was destroyed. The contact stated that the vehicle was previously repaired because the vehicle would fail to start and there were other electrical failures. The manufacturer was not contacted in regards to the failure. The failure mileage was 125,000.

- Rochester, NY, USA

problem #2

Sep 272004

Impala 6-cyl

  • Automatic transmission
  • 1,857 miles
Engine is consuming over a quart of oil approx. Every 1800-2000 miles. I was shown a bulletin that said that there was a problem with oil consumption at the dealership. I brought the car in twice to them each time the low oil light came on and each time they told me there was nothing that could be done but to check it every day or two and keep track then come in with my notes to see what was happening. I brought the car to my regular garage the next time the oil was low and 4 mechanics informed me that the rate of oil consumption was not regular and that there is a problem if it is not making it passed 2000 miles before it loses over a quart of oil.

- College Park, MD, USA

problem #1

Sep 292003

Impala 6-cyl

  • Automatic transmission
  • 3,634 miles
Vehicle stalled intermittently at any speed. Vehicle had been to dealer on four separate occasions, and they were unable to duplicate the problem. The vehicle has stall a total of eight times. The vehicle has been taken to the dealer on four occasions but no codes were found during testing.

- Blissfield, MI, USA

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