maybe, but that whistle is eerie. I know Ford has been fiddling with an overboost function in the Focus ST, its essentially like hitting the turbo button in Need For Speed.
The CLA doesnt scream race car, besides they already use the C-class in DTM. It still sounds like a turbo 4 going by, but really how much can those AMG guys wring out of the poor thing. Unless thier fidgeting with larger turbos??
Still doesnt explain the whistle