I've had my C3 for 2 weeks now. Love everything about it except the driver's seat is killing my back. Kind of depressing and I'm starting to regret my purchase. I didn't notice any discomfort on my test drive. Noticed it the next day after driving it off the lot. Initially I thought I just needed a few days to get used to a new seat, but the pain is not going away. I am a big guy - 6'3" 250lbs so that may have something to do with it. I haven't even made my first payment on this thing and I'm already considering trading it in. Not wise financially, but I also can't take this discomfort much longer. Ugh.