I'm in the market for a euro, i've never bought one before, only japaneses. Just looking at low mileage A4 or 3-series, 2003/4/5. what do i need to know? do any of these have 100k mile warranties? Anything happen after 50k and people are trying to unload them on me? like some timing belt or turbo or tranny factory problems. I also was liking that new body TL. Thoughts?