2009 Audi A5 3.2 Failures

lancas25

I have been having strange things fail on my car and was hoping someone out there could relate or help. Strange things like the same headlight having to be replaced in less than a year, engine mounts failing, and most recently the alternator failed. Has anyone else had these problems/problem, how should I go about this. Also I opened the hood after the alternator light came on and there is a funnel under the hood. Had $7,000 worth of work done less than 6 months ago. How should I document this and not be set up by the dealer?