my 164, w/~165k miles on the clock, has prolly been the worst, maintenance-wise, but it's still not bad. and, the only non-normal-wear failures have usually been parts that have *bosch* written on 'em. the gtwe6, w/150k, has been amazingly trouble-free. so was the milano verde, sold w/145k, cuz i found another one w/only 66k...
doug