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really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
54,070 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.

2011 Chevrolet Impala engine problems

engine problem

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2011 Chevrolet Impala Owner Comments

problem #9

Feb 252015

Impala 6-cyl

  • 67,500 miles


While driving my car started hesitating. The wheel traction and engine light came on, it had three messages come up stating engine losing power, traction stability needed I can't recall the last messages. It comes and goes on and off.

- Hillcrest Heights, MD, USA

problem #8

Aug 102014


  • 60,450 miles
Coming off of a freeway, the exit is a wide curve. About half way through the turn (going toward the right) the engine turned off. Lost all power steering and brakes. Fortunately, I am strong enough to be able to muscle the car through the rest of the curve and pull over to safety. The muscling caused minor injury to left shoulder. Car did restart without a problem.

- San Antonio, TX, USA

problem #7

Jul 142014


  • 78,000 miles
The A/C motor behind the glove box is making a clicking noise and I have noticed on a lot of GM and Chevy vehicles the same defect. I think this should definitely be a recall considering a lot of people I know have the same problem.

- Tucson, AZ, USA

problem #6

May 292014

Impala 6-cyl

  • 81,879 miles


First incident was on (05-29-2014check engine light, service traction system, and reduced power lights came on. Car took off with a jerk. Had car scanned for codes. Came back as the throttle position sensor. Had that changed today(06-06-2014) and code cleared out. Was doing great unill this evening while I was driving home tonight, (06-06-2014),on highway doing 56 M.P.H. and car shut off. Check engine light came on, service traction control system, and reduced engine power. I quickly veered off into median and turned flashers on. There were several cars behind me. Car would not start right away. After several minutes it started with only check engine light on. My children and I could have been seriously injured or killed had I not been able to react as quickly as I did. Obviously I am not the only one experiencing this same issues based on the investigations on here. I have also researched on many GM forum posts with many reporting the same issues. GM basically apologizes in the forums and tells them to take it up with the dealership.

- Lancaster, KY, USA

problem #5

Jan 012014

Impala 6-cyl

  • 65,000 miles
I was driving my car and it began to shake and lose power and would not accelerate. The check engine light came on with messages reduced engine power, service stabiltrak. This has been happening quite a bit with this car. I have been researching online and have noticed that numerous complaints have been filed going back years. GM should take care of this problem as it is happening with numerous vehicles. I drive on the interstate every day and if this happens there I hope it doesn't cause an accident.

- New Lenox, IL, USA

problem #4

May 142012


  • 50,000 miles
While driving down the road, the car will violently jerk, and the dashboard will flash, reduced engine power. Now car won't move at all. We have replaced the gas pedal twice! Chevrolet needs to address this issue. I am seeing it all over the internet.

- Woodgate, NY, USA

problem #3

Jul 272012

Impala 6-cyl

  • 36,000 miles


We were on the turnpike going about 60mph when the engine light came on. The service light for traction control and service stabilitrak warnings came up on the dash. It also said reducing power to engine. The car slowed in speed and began shaking. Service throttle came up on dash also. We had no where to pull off. There is not much of a burm on this interstate and before we could get to a pull off area the car shut down in the road. We had to set there for 10 minutes before the car would restart so that we could get to a safer place. I had my children in the car in the middle of this road with tractor trailers swerving around me constantly. All I could do was pray no one would hit us. We even contacted 911 for assistance. Since this day we have had the same continuous problems. I will not travel on the interstates with this vehicle for fear of this happening again. There doesn't seem like there is any one particular thing that sets this off. But seems to be worsening. I feel this is a safety issue and should be taken care of by GM. From the Chevy forums on the Impala it seems this a problem with their Impala and they should have to repair this problem with no cost to the consumer before someone is killed.

- Liberty, WV, USA

problem #2

Sep 202012

Impala 6-cyl

  • 42,000 miles
I have 42,000 on my 2011 Chevy Impala and the service traction control and then reduce engine power as well as the check engine light came one. I have read it is the throttle body and not covered under the extended warranty, but numerous people are having the same problem with the same exact thing and no recall or any kind of care is coming from GM.... and those of us that are still paying for our cars are getting the short end of the stick...

- Bay City , TX, USA

problem #1

Sep 142011

Impala 6-cyl

  • 5,800 miles
My Impala will not heat in idle position, no early morn defrosts for me! took to dealer ( 10/18/11) he found a leak, replaced a hose. It was good for a while, now doing again, (10/28/11), going back in shop on 11/3/11. Also car will not heat when remote starter is used, comes up to temp everytime just doesn't blow hot air, this has been reported to them, they tell me that's "normal", what"?, im sorry, but isn't the purpose of remote starters, for regulating cabin temperature" I will see how these two issues are handled on thurs, I have this funny feeling I will be back here on this site for the same issues.

- Sidney Center, NY, USA

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