True, this car replaced the Cavalier, which from past observations wasn't a very reliable car.
The Cobalt SS is a pretty expensive car to have though. More than likely you'll have to make car payments on it, insurance will be sky high ( since you'd be 16 & a liability in a sports car ) & frankly as a driver of the roads I don't feel very safe being near teens in sports cars.
My advice for you is get the cheaper version of the Cobalt which would be the LT. It looks the same as the SS, except it doesn't have all that power which no teenager needs & the LT version has 4 doors. You have to consider the payments for the car, the insurance which will have to be full coverage, taxes on the car & plates ( 2 depending on where you live ).
All of these things you HAVE to consider when looking for a car. Everyone at your age wants a sports car or something that looks fast. You have no idea how much it costs to maintain neither. If your parents are going to help they probably don't want to be on the hook for $12,000.
Good luck.