I have an '05 A4 Advant with 78K miles on it. Lately I have been experiencing an intermittent issue where the turbo feels like it is "stuck on" and the temp gauge is just slightly over to the hot side. I can start from a stopped position without putting my foot on the pedal and go uphill without giving it any gas. Has anyone heard of this? I suspect my turbo is on the way out, but everytime I bring it in, they can't find anything out of "normal". No fault code and no warning light come up when it happens.