Hello I have a 2014 650i M-Sport Convertible, I was returning home for running errands and heard a loud bang sounded like I hit something, the car was still running but the car didn't accelerate when I hit the gas and the engine just revs. I was able to coast home as I was right down the street. The car starts fine, I can shift to all gears and hear a noise coming from under the car while in drive and reverse, and the car does not move engine just revs. I pulled out the laptop fired ISTA and I have no codes, no CEL, no fluid leaking. I'm at a lost any help would be appreciated. Thanks.
