 I started having problems right off the bat.  The check engine light came on about two months into my ownership.  They had to replace the entire O2 sensor.  Next the door locks broke.  They've been replaced twice, and are currently broken again.  The interior dome light broke in year three.  I never touched the thing.  The muffler started vibrating in year five.  I've had it "fixed"  but it's still vibrating when I accelerate.  My car has been strictly dealership maintained.  They are a pain to deal with.  You have to pester and pester to get them to do anything.  I figure if a part breaks and keeps breaking VW should change and make better more reliable parts.