One problem related to rear suspension has been reported for the 2008 Chevrolet Cobalt. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Cobalt based on all problems reported for the 2008 Cobalt.
My son was driving his chevy Cobalt home and when he tried to stop he had trouble. It felt like the back tire was going to fall off. He ended up hitting a car. Upon inspection, we found that the rear suspension on the passenger side had lost the nut and washer. It has been repaired at our expense even though it was under warranty.