Just passed 326,000 mi. on my Sienna. Purchased new in 1999 - absolutely the best car ever! Faithful maintenance seemed pricey at the time-timing belt every 60,000 miles, e.g., but I stuck to it & can count the number of repairs on one hand. Water pump at 200,000, stuck seat belt, tie rod ends @ 250,000. Had 3 prior Chrysler minivans, none of which lasted more than 140,000; all needed new radiators, transmissions etc. Inconceivable on this van. Not even broken plastic parts. Didn't use the tow package 'til recently. Added a trailer hitch and took a full U-haul across the Appalachians at 300,000 miles w/no problems. Driver seat has great lumbar support - when my back hurts I go sit in my car.
I have owned since new. Has never left me stranded, always been dependable. 139,000 miles and no major problems. I do most all my own maint. I do regular oil changes (syn) I also do drain and refill on tranny at every oil change, some may say thats not needed, but I have never had trouble with Trans. and it only takes 4 qts at a cost of $12.00 which is small price compared to new Trans. Biggest expense was new exhaust from manifold back including new converter, total cost $600.00. Some small problems such as right sliding door sticks, and drivers side window motor is bad. So overall been a great van. I will drive it until the doors fall off.
I have owned my '99 for 8 years. The brakes seem to last a long time, but I am on my 4th alternator. Two exterior door handles broke off. What I don't like is not being able to turn off the headlights, I need more leg room, and I don't like the radio tuning. But at 203,000 miles it has been overall reliable. It has outlasted my Ford and Chevy vans by 65,000 miles already. And I replaced the AC system twice. Maybe a screen in the grill would protect it from stones which cause leaks. Update: The latch handle on the back hatch door broke again.
I thought I would never be a mini van family. I started out with a excursion for my family of 5-WAY TO THIRSTY and doesn't drive near as fun/GREAT as a Sienna. I drove a 04 Sienna than a 06 absolutely LOVED the way they handled, felt, and drove. I looked high and low for a a 04 or newer in my price range 11K it was not happening then I came across my new 99 Sienna XLE-I had my doubts at 1st. I didn't drive a 99 and with 159K mls??. THE XLE has beautiful leather seats and it still drove like it just came off the show room floor. These Sienna's are so remarkable do not short change yourself and settle with competition without driving Sienna first. It is truly a luxury mini above the rest.
It's reliable most of the time. We had to rebuild the alternator twice. Mechanically, it seems to do great, but it's the little things that drive me crazy. In the 4 years we've owned the vehicle, we've had to fix the doors 3 times (3 outside door handles, 1 inside door mechanism). Seems minimal, right? No. Each fix cost us between $200 and $300 because they have to take the door apart from the inside to get the handle in. It's all Labor. The sliding doors have always stuck too. My suspicion is the previous owner had these issues too because the inside sliding door panel on the right side won't stay in place, Probably been taken apart too many times. Current issue: stuck ignition switch.