I just recently bought a CPO 750Li, 2006, with about 40K miles. LOVE the car, but have been experiencing an intermittent problem that concerns me a wee bit...

Sometimes when I switch to sport mode, the transmission takes a second to engage, and if I hit the gas before that's happened, it engages so hard that it feels like I've been hit from behind...in fact, the first time it happened, I actually stopped and got out of the car to see if I'd been hit...

Anyone else experienced something like this?