 My car is 6 months only and has been in service 6 times many electrical problems. The build quality is terrible. Led lights going out, rattles, popping and cracking noises in radio, keyless go issues, loose parts p, engine errors, hard shifting tranny. Hoping I can get it declared a lemon by far the worst built car I ever owned it made my Cadillac look reliable. Most of my loaners were c300's as well and most of them had issues too. Mercedes you let me down back to bmw I go.