I have owned my 98 Sienna for 10 years and am very pleased with it.
I drive it to and from work daily (40 miles round trip).
Bought it with 60,000 miles on it and currently it has 158,000 and counting.
Problems: exterior door handles breaking (common on these models); one interior door handle break; rear intake gasket leak; power window switch.
Also had the rack and pinion replaced recently.
Otherwise it has been only routine maintenance required.
Another dependable toyota product and can't wait to see how many miles I can get out of it.