Originally Posted by nsquared
I've read some posts - seems like it could be thermostat and the cooling fan being broken.
I noticed when I lost power / limp mode in 2nd gear the fan was very loud. Also, the temperature gauge went from the middle back down a bit then back up so iono.
This is your brand new car right? Sounds like a Dealer Diagnostic is in order.
If you haven't done so yet open the hood and look for any loose Vacuum lines on the right side of the engine. On the N54 engine I have heard of this issue before which cases the turbos to not pressure up. Grasping at straws here a bit.