Notes: The 2007 Cobalt inherited most of the problems from the 2005 and 2006 model years, but toned them down (a bit). Sure, the power steering still fails and the car has a chance of going up in flames due to a cracked fuel tank, but it’s not as prevalent as the older models. At least not yet.

In 2012, the Cobalt was recalled for gas tank fires but only for owners in certain states.

Then in 2014, the 2007 Cobalt was part of a massive GM recall due to a defective ignition switch that could cause the airbags to not deploy during an accident. The problem led to 13 deaths, government investigations and multiple class-action lawsuits.


really awful
Typical Repair Cost:
Average Mileage:
66,500 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. machine heads & replace valves (1 reports)
  2. not sure (1 reports)
2007 Chevrolet Cobalt engine problems

engine problem

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2007 Chevrolet Cobalt Owner Comments

problem #2

Dec 012012

Cobalt LS 2.2L

  • Automatic transmission
  • 85,000 miles


My Cobalt will idle rough and even stall when sitting at a red light. I cannot run the A/C at all. I have replaced the Throttle body unit, MAF, changed spark plugs and oil change. Nothing has helped.

- georgiaaz, Glendale, AZ, US

problem #1

Sep 082010

Cobalt 2.2L

  • Automatic transmission
  • 48,000 miles

Check engine light came on during road trip, got read at local auto parts store. Missfire cylinder 2. Changed spark plugs, switched ignition coils, then switched injectors in an attempt to trouble shoot, each time getting computer codes reset. Began checking forums, seems like a common problem, but no real fix. Check engine light still comes on, week of driving goes by, car starts to shake at idle and shift hard between 1st and 2nd gear. Took to mechanic, says cylinder has low compression, either piston rings bad or valves not sealing. Mechanic did some research and found that a common problem with heads of the engine is that they crack and bend valves. So for $3000 he can fix it, but no guarantee it won't happen again. Hard shifts due to computer adjusting idle to compensate for no compression, affecting timing of transmission.

Selling this POS due to all complaints. I have at least 4.

- Nick S., WEBSTER, TX, US

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