really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
72,849 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.

2010 Chevrolet Cobalt engine problems

engine problem

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2010 Chevrolet Cobalt Owner Comments (Page 1 of 2)

problem #23

Dec 052016


  • miles


Takata recall. The contact owns a 2010 Chevrolet Cobalt. The contact was not experiencing any failures until the vehicle was serviced by a dealer for a manufacturer recall concerning the air bags. The contact noticed that the warning indicator flashed for low power. The vehicle reduced speed and stalled several times. The service engine indicator remained illuminated. The contact was uncertain if a dealer would provide a solution. The manufacturer was notified of the failure. The VIN and failure mileage were not available.

- Peoria, AZ, USA

problem #22

Oct 162016


  • miles
Vehicle is a 2010 Chevy Cobalt 2.2 ecotech (base model). On start up check engine light appears with message engine power reduced. Check engine code is P0641. Replaced multiple sensors, throttle body, checked for wire issues etc. Dealer replaced ECM and still having issues. Can not drive over 40mph or engine with disable. Car hesitates and bucks while driving in engine reduced mode.car has 68,789 miles.

- Palmer, MA, USA

problem #21

Nov 302016


  • 120,000 miles
The contact owns a 2010 Chevrolet Cobalt. While driving approximately 40 mph, the vehicle decelerated after the check engine and engine power reduced warning indicators illuminated. The vehicle stalled and the contact was only able to restart the vehicle after having a battery jump. The failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The VIN was unknown. The approximate failure mileage was 120,000.

- Duncanville, TX, USA

problem #20

Oct 262016

Cobalt 4-cyl

  • 80,000 miles


I was driving home this morning and a deer jumped out in front of me. I slammed on the brakes and the engine shutoff. Making the power brakes and steering shutoff. Extremely dangerous not to mention if there is no power most likely the airbags will not deploy. A serious issue for a car that is less than 6 years old with around 80,000 miles on it. Just a disclaimer it is an automatic so there is no clutch.

- Jefferson Twp, PA, USA

problem #19

Oct 212016


  • 100,464 miles
After starting the car the transmission bucks rough causing the front wheels to slip and causing the stability light to come on. Sometimes the vehicle bucks so hard and so many times it will stall out creating a very dangerous situation... my son's co-worker and friend has the same car and the same exact problem... I feel it is an issue with the transmissinon

- Brockton, MA, USA

problem #18

Dec 152015


  • 100,000 miles
The contact owns a 2010 Chevrolet Cobalt. While driving approximately 45 mph, the vehicle stalled without warning. The vehicle was able to restart minutes later. The failure recurred numerous times. The vehicle was taken to a dealer, but was unable to be diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 100,000.

- Greenville, SC, USA

problem #17

Mar 022016


  • miles


Rear brakes making lots of noise, and are crap. This car should have alot more recalls. Stop letting GM screw us hard working people! my car is moving when I hear the noises, my brake pads are new so this is not the problem.

- Angola, IN, USA

problem #16

Oct 202015


  • 107,225 miles
While driving on nys I-90, my 2010 Chevrolet Cobalt ls 2010 went into "engine power reduced" and I was not able to drive over 40 mph. I pulled off to the shoulder and waited for about 10 minutes. I started back up, check engine light remained on and car stays in limp mode. The vehicle now idles rough, accelerates slow when at red lights and stop signs and bucks when shifting gears. First at 10 mph (hard buck) than (lighter buck) at 20 mph, and continues lighter through acceleration. Codes that are coming up are P0107 engine (map) barometric pressure circuit - low input, P0452 engine (evaporative emission system pressure system pressure sensor - switch low input, P0532 engine ac pressure sensor a - circuit low, and P0641 engine (sensor reference voltage a) circuit/open. I was able to clear out all codes except for P0641 (permanent). Please help.

- Glenville, NY, USA

problem #15

Jun 132015


  • 136,000 miles
My car has had regularly scheduled maintenance since we purchase it in Feb 2011. Today, as my husband was driving it, we believe the engine just blew up. The car started shaking, the check engine light came on, then there was a loud noise and the car shut down. It had to be towed back to our house. We have no idea why this happened or what to do. We currently still owe money on the car. It is still financed. This vehicle was constantly at Chevrolet because it had problems. Many of them they refused to fix even though we bought the extended warranty. I took it and complained about the dash acting strange, the gauges would jump and the digital would go to all dashes, they replaced something once and it still did it. I complained several more times and all they would say was they could not get the issue to replicate. There have been oil leaks that were replaced under warranty, it wears out shocks like crazy, both front hubs have had to be replaced, there has been water in the head lights, 1 was replaced by the warranty but then the other my dealership refused to replace and I had to pay to have it repaired. Water leaks into the passenger side front floor board from under the dash, the dealership said it was not covered by the warranty, water leaks in the driver side floor board from under dash durring and after heavy rains, dealership stated they could not replicate the issue, not to mention the recalls. We have done all the reg. Scheduled oil changes and service. It has gotten new spark plugs and new coil packs. Now the engine is blown up with only 135000 miles on it.

- Okeechobee, FL, USA

problem #14

Jun 062015


  • 104,500 miles
The contact owns a 2010 Chevrolet Cobalt. While driving up a hill at approximately 30 mph, the engine power reduced warning light illuminated. The vehicle made a jerking motion and stalled. The vehicle was taken to a dealer where it was diagnosed that the map sensor needed to be replaced. The vehicle was repaired, but the failure recurred. The manufacturer was not notified of the failure. The approximate failure mileage was 104,500.

- Clarksville , PA, USA

problem #13

Jun 062015


  • 104,000 miles


I was driving my 2010 Chevy Cobalt and the engine power reduced light came on. The engine reduced to 10 miles per hour. I had a line of cars behind me as I was heading to my son's graduation. Very embarrassing. I am still making car payments and can't afford a major expense. Posts said it was the complete throttle body. I have to wait until I get paid so I can get it fixed. I will take it to C harper in belle vernon where I got it. Now I am stuck with no way to work.

- Clarksville,, PA, USA

problem #12

May 012014


  • 45,000 miles
The contact owns a 2010 Chevrolet Cobalt. The contact stated that the engine overheated and the vehicle stalled. The vehicle was able to restart after numerous attempts. The dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 45,000.

- Tampa, FL, USA

problem #11

Aug 252014

Cobalt 4-cyl

  • 65,900 miles
Purchased car used 4/2014. Oil leak reported to dealer and repaired 4/2014. Car taken back to dealer for service 8/2014 for continuing oil leak. Per dealer, engine was badly cast, causing it to be porous. Oil was weeping through engine block. Entire engine now being replaced under warranty. No recall notice for this problem.

- San Bernardino, CA, USA

problem #10

Jun 182014


  • 68,000 miles
The contact owns a 2010 Chevrolet Cobalt. The contact stated that the vehicle failed to start after numerous attempts. In addition, the vehicle stalled on three occasions. The vehicle was able to restart on several occasions. The vehicle was previously repaired under NHTSA campaign id number: 14V171000 (electrical system). The failure occurred after the vehicle was repaired under the recall. The vehicle was not repaired for the initial failure. The manufacturer was not notified of the failure. The approximate failure mileage was 68,000.

- San Antonio, TX, USA

problem #9

Jun 012013


  • 60,000 miles
The check engine light has been on continuously for the past year. Multiple diagnostic test have pointed to a coil pack or spark plug misfire prompting a replacement. Each time the coil pack or spark plugs are replaced, the check engine light goes off and within the span of a few hours or the next day the light comes back on again. I take the vehicle back in for another diagnostic and the same code pops up again. There is a continuous misfire which cause the car to loose the ability to accelerate or cause the vehicle to shake violently while driving. The A/C increases the chances of these occurrences. At the last check the mechanic finally told me that there must be an electrical problem because he keeps getting the same code and they have replaced it too many times for it to still be the same problem. It was suggested to me that this problem may be a manufacture defect. I looked into it and have found similar complaints from other Cobalt owners.

- Hawthorne, CA, USA

problem #8

Sep 172013


  • miles
While driving along in my Cobalt, suddenly, without warning, the engine power dropped off and the vehicle basically came to a stop in busy traffic. This, (affecting power steering, speed, control and stability),but, .. most importantly !!,.. severely threatened the safety of vehicle occupants. It was all I could do to get out of harms way..(.. I was turning left, safely spacing oncoming traffic when this happened the 1st time..).!! very scary when cars are blasting toward you and the car won't respond as it should. This has happened many more times since that first encounter and at any time, without prior warning, it will put you in very hazardous, unsafe, dangerous and potentially deadly situations..!!!! nice engineering job GM...!!! (where's the common sense or forethought..??)

- Las Vegas, NV, USA

problem #7

Jun 162014

Cobalt 4-cyl

  • 99,000 miles
I was driving down the road at 60 mph when my screen said engine power down and it automatically reduced speed and eventually said disabled engine and I lost all power. I had my car tested and it is a faulty engine control module. I believe for a 2010 this part should not have gone bad and when my engine powered down and disabled my engine going at a high rate of speed it could have caused an accident. I researched this problem and earlier Cobalt models were recalled for this problem and part.

- Gallatin, TN, USA

problem #6

May 112012

Cobalt 4-cyl

  • 55,000 miles
In the middle of driving, the vehicle will shut off and on (multiple times) which affects the fuel and RPM gauges, loss of all power steering, all electrical starts going crazy (locks and unlocks the doors), starts flashing "low fuel" and "power steering" warnings and then car will go into complete lock mode. As of 4/30: Has been fixed under the recall issue, however vehicle is still having these problems.

- Hollister, CA, USA

problem #5

Mar 292014

Cobalt 4-cyl

  • 102,000 miles
I was turning left driving toward a store & as soon as I came out of the turn the car turned completely off & not even the gauges flashed.the driver behind me almost hit me due to the sudden stop because of complete loss of power and control. I stepped on the brakes & shifted it into neutral trying to start it & it took me several attempts to get it to crank up again. I turned into a parking lot just for the car to turn off once more. After I cranked it up again it was fine. Car had issues before over the years; it seemed to have loss of power put regained it in an instant; was taken to dealership, incident could not be duplicated. Car had recall for electric power steering assist soon after I purchased it on May 29, 2010. Found out recently about one recall for ignition switch when I took car to dealer on April 4, 2014 for an oil change. Called GM and they confirmed with my VIN # that there was another recall for the eps even though it had been replaced in 2010. Yesterday third recall for the ignition switch key lock. I was also informed by GM hq, when I talked to them a fourth time, that they were not sure which Cobalts 2010 had eps problem, that does not reflect the answers I received on three other occasions from GM hq's executive office. My dealers system does not reflect same recalls then GM's. I was told that "the dealers got the memos and had probably not got to them to read them yet." I saw what was on their computer. GM is not being truthful and I am starting to suspect that they used another part with the same part number with the eps problem and therefore they can not determine which Cobalt is affected. GM is not being truthful and is being negligent in informing the dealers and the vehicle owners ( I have not gotten any recall notices in the mail). Breach of contract. Sold faulty vehicle to me with knowledge of faulty part(s) on May 29, 2010.

- Fayetteville , NC, USA

problem #4

Feb 242014

Cobalt 4-cyl

  • 87,440 miles
On two occasions my Cobalt just shut off, once sitting in traffic the other while merging onto the interstate, I have also got service airbag lights blinking random during the same time frame. Dealer is telling me my car isn't included in recall, how can this be?

- Fortville, IN, USA

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