I have had my Cobalt for 5 years now, and I have put about 70,000 miles on it. Around 45,000, the brakes began failing. Around 60,000, the transmission began failing. Just recently, it has begun violently shaking whenever I brake or accelerate. The car has served me well, and I haven't had to replace anything yet. Once the transmission fails, though, the car is totalled. I have manual locks and windows, so I have not had any problems with the doors locking me in or out. This is a good car for first-time drivers, but if you want a long-lasting car, I would avoid the Cobalt.
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.