I have a little over 61,000 miles on the car now. The major problems I had were a drive unit that started making the droning / milling noise (replaced at 18,000 miles) and a main contactor that failed during a road trip at 30,000 miles (had the entire 85 kWh pack replaced). All four original door handles have also been replaced at this point. The full repair list is pretty long (all the way down to a dead spider in the tail light), but the majority of problems were minor and fixed in mid to late 2013.