One problem related to fuel delivery has been reported for the 2007 Chevrolet Cobalt. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Chevrolet Cobalt based on all problems reported for the 2007 Cobalt.
Car makes a series of knocks on a cold start---sounds as if someone is locked inside the trunk of the vehicle. Chevy has looked at my vehicle and said it was due to a bulletin stating a noisy evap system, which it is not fixable. I am still waiting to see what action will be taken.