That may be. A lot of folks on this forum have ungodly problems with their cars. All I know I've driven my C280 (6 years old) 180,000 miles and never ever did anything but chage the oil/filter every 5000 miles with Castrol Syntec 5/50. Car runs like a dream, never had the first problem. All I know is to never take it to a dealer since they do spotty work at best. What say you?