Mhk827

Hi everyone I just got my w205 c300 2016 for a month now. I am starting to notice this grinding kind if sound after driving in sport mode for awhile. The sound usually comes out when I accelerate lightly. Especially around 2000 rpm. It sounds like something is grinding but it isnt like a high pitch sound.But when the rpm gets too 3000 its gone. Usually happens after driving on sport or sport +. Bought it back to the dealer and they don't know what the problem. Does anyone have this experience with there new c300?? Thank you

rbrylaw

I've only had my C300 for 5 days now and have driven in sport only a few times, but no, I don't hear any unusual sounds when in sport mode.