Although mine is only days old, so far 100% in all areas. My 04 Sienna was built in the US and came with 2 minor assembly errors (last row mid seat shoulder beat installed backwards, plastic liner on front fender poking out a bit instead of under the lip of the fender). After 3 yrs it has not had a single malfunction.

My last GM vehicle (I used to be dedicated GM buyer because I live in the area of an assembly plant, support the local economy stuff) before switching to Toyota died on the very first day. Took the dealer two days to track down a poorly done electrical connection. The day I returned it after 3 yrs on lease, there was a woman at the dealer complaining loudly of the exact same problem; first day she had the car is died on raidroad tracks.