[jollerbarn]

Paying the economic difference is a joke.. is that even legal? If the dealership consistently are unable to fix your problems there must be legal actions you can take to alleviate the situation.

I think it's pretty clear the dealership are fixing the wrong thing. This has happend to me several times before where they'd rather keep trying to fix the wrong thing rather than figure out what's really going on. As an example I had the active cruise control in my old e91 fixed 3 times where they completely refitted the cruise control sensor. Neither of those 3 times fixed it. I took it to a different dealership and they fixed the problem in one hour without refitting anything. Maybe you should get a second opinion?

Edit: Driving style may be causing the problem, but that doesn't change that it's not your problem. How can you expect to buy a higher-end sports car that breaks if you push the throttle?