Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
25,938 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.

2012 Chevrolet Impala engine problems

engine problem

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2012 Chevrolet Impala Owner Comments

problem #8

Aug 082014


  • 88,000 miles


The contact owns a 2012 Chevrolet Impala. While driving approximately 35 mph, the vehicle suddenly accelerated, the steering wheel became difficult to maneuver, and the engine stalled. As a result of the failure, the rear end of the vehicle crashed into a pole. The contact sustained neck and back injuries that required medical attention. A police report was filed. The vehicle was towed to an independent mechanic, but the technician was unable to diagnose the cause of the failure. The vehicle was not repaired and the manufacturer was not notified of the failure. The contact was informed that the vehicle was included in NHTSA campaign number: 14V355000 (electrical system). The vehicle was not repaired. The approximate failure mileage was 88,000.

- Houston, TX, USA

problem #7

Jun 132014

Impala 6-cyl

  • miles
While driving my car highway speed was 65mph, at that rate of speed my vehicle was picking up speed and when I went to press on my brakes, it was if I was driving on ice and my car was skidding. Two days later I stopped for gas and my car wouldn't start, after my 3rd attempt, it stuttered hard time turning over. Once it did I turned it off but the car was still running. I did this several times. Very scared to drive my car back home because I'm out of town. My lights says I have low right tire pressure but I don't, it's back left tire for some odd reason.

- Eastpointe, MI, USA

problem #6

May 292014

Impala 6-cyl

  • 66,000 miles
Car experienced complete engine and electrical system failure while accelerating onto busy highway. There was no emergency lane, so brought car to a halt blocking one lane. This was as very dangerous situation. Later determined that the cause was a loose hot wire terminal connection to the fuse box. It had either vibrated loose or was not tightened adequately at time of manufacture. Local dealer was not interested in reporting this event to the GM data base, so gave me a Chevrolet customer service number to call, which I did.

- Pine Bluff, AR, USA

problem #5

May 242014


  • miles


The contact owns a 2012 Chevrolet Impala. The contact stated that while driving 10 mph, the vehicle accelerated independently without warning. The vehicle was taken to a dealer where the technician was unable to perform a diagnosis. The manufacturer was not made aware of the failure. The failure mileage was unknown and the current mileage was 44,000.

- Gilman, IL, USA

problem #4

Nov 262013


  • 29,000 miles
When driving with the engine at lower than normal driving temperature, driver stops at a stop sign and with hard acceleration the engine surges from full power to dying out as tho fuel starved.this continues in a jerking action. Until; the driver removes his foot from the accelerator and then presses the gas feed again at which time the engine runs smoothly. This has happened on numerous occasions, however the dealership can find nothing wrong as the engine is now at normal running temp. Driver was told the problem is in the throttle body of the fuel system --- help..

- Selinsgrove, PA, USA

problem #3

Mar 012013


  • 17,500 miles
I stopped at a intersection, and pulled out onto another road, the car backfired and quit running, leaving me in the middle of the intersection, and almost got hit. I have taken car to dealer and they say the car is operating normal. This happens alot within this vehicle when accelerating.

- Fairmint, WV, USA

problem #2

Jun 112012

Impala 6-cyl

  • 7,000 miles
Vehicle started via normal key ignition. After high idling stops for warm up, vehicle starts to have odometer needle move from 500 RPM to 1000 RPM for a steady 5 to ten minutes. In addition, event occurs frequently at long stops even after car warm. Usually, RPM may steady at about 750 or so a normal RPM setting for this vehicle. Took vehicle to dealer who kept it for a week. No correction made. Dealer state waiting to hear from manufacturer. Vehicle still have problem having needle flutter between the RPM mentioned causing undue distress to engine components. Please assist.

- Littleton, CO, USA

problem #1

May 012012


  • miles
2012 Chevrolet Impala lt. Consumer states high pressure fuel pump is very noisy when accelerating from a stand still and also states issues with vibration the consumer stated the accelerator motor made a loud noise. The consumer stated the fuel lines, which apparently run directly under the driver's side floor, vibrate due to the harmonics set up by the high pressure fuel pump. The vibration is continuous and can be felt through the floor and up into the driver's seat.

- Auburn, NY, USA

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