Problems · NHTSA complaints

2008 Toyota Sienna problems

Owners filed 429 complaints about the 2008 Toyota Sienna with NHTSA between Dec 2007 and Aug 2026. The most-cited component is structure (117).

Complaints
429
Filed with NHTSA
Crashes
37
Reported by owners
Fires
4
Reported by owners
Injuries
19
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Structure117
  2. Vehicle speed control51
  3. Electrical system45
  4. Engine39
  5. Power train38
  6. Steering33
  7. Electronic stability control (esc)29
  8. Service brakes28
  9. Tires19
  10. Air bags14
  11. Latches/locks/linkages13
  12. Seat belts13
  13. Service brakes, hydraulic13
  14. Engine and engine cooling12

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 27, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20071
20086
200917
201062
201123
201222
201338
201453
201550
201638
201727
201831
201918
202019
20217
20228
20233
20242
20252
20262

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Structure

117 reports4 crashes1 related recall
“MY VEHICLE HAS 138,000 MILES AND WHEN I INQUIRED ABOUT FIXING THE SLIDING DOOR, I WAS TOLD THAT THE RECALL WAS OVER IN 2016; HOWEVER, I KNOW OF A PERSON THAT WAS ABLE TO HAVE HIS VEHICLE FIXED BY TOYOTA. IN FACT, TOYOTA REPLACE BOTH THE DOOR SLIDING COMPONENTS / LATCHES. FOR MY VEHICLE I TRIED GETTING TOYOTA TO FIX THIS LAST YEAR AND TRIED AGAIN TODAY BUT TOYOTA WILL NOT COVER THESE REPAIRS. I WANT IT DOCUMENTED THAT THIS VIN HAS NOT BEEN FIXED REGARDING THE SLIDING DOOR AND SHOULD A SERIOUS SAFETY ISSUE ARISE IN THE FUTURE DUE TO THESE DOORS, THIS WILL SERVER AS DOCUMENTATION. THE ISSUE BEGAN ABOUT 1 YEAR AGO WHEN THE DRIVER SIDE SLIDING DOOR WOULD NOT OPEN. THIS YEAR I HAD TO TAKE IT ON MYSELF TO TRY AND FIX THE ISSUE DUE TO TOYOTA NOT WILLING TO COVER THE COSTS. THE CABLE FOR THE SLIDING DOOR HAD FRAYED AND WHEN THE DOOR WAS MANUALLY OPENED, IT WOULD ONLY OPEN SOME BUT NOT FULLY. THE ROLLER LATCH FOR THIS DOOR ALSO APPEARS TO BE BENT AND NOW THE DOOR IS CLOSE TO HITTING THE SIDE PANEL WHEN OPENED; I HAD TO REMOVE THE CABLE COMPONENTS MYSELF TO ALLOW THE DOOR TO OPEN. I BELIEVE THE ESTIMATED REPAIR COSTS FOR HAVING BOTH DOORS MECHANISMS REPLACED IS $4,000 AND…”
Owner complaint to NHTSAFiled Sep 26, 2020StructureODI 11361310

Vehicle speed control

51 reports22 crashes
“I have had the traction control go on while driving on the highway even when I turn it off. Sometimes the VSC and TRAC OFF lights go on while driving. The roads are dry. Whenever I take it in to the mechanic, all the lights are off. They pulled a zero calibration code and recalibrated. It still kept happening. Then I was driving around a curve on highway speeds when the traction control light went on and the van suddenly braked on its own and I almost lost control. The tires are new and the roads were dry.”
Owner complaint to NHTSAFiled Feb 6, 2025Steering, Vehicle speed control, Service brakesODI 11641052

Electrical system

45 reports1 fire
“Issues with VSC. The sensor alarm goes off when driving at more than 50 mph and slightly turning the steering wheel. The car brakes itself and this is DANGEROUS. It happens all the time, it has been more than 5-6 years and we are to the point of not using the car on the freeway to prevent a potential fatal accident. I found posts describing the same issue with this model of Toyota. Car should be recalled to get this fixed.”
Owner complaint to NHTSAFiled Jul 15, 2023Steering, Electrical systemODI 11532504

Engine

39 reports1 crash1 fire
“The head gasket that was repaired failed and the radiator system also failed. Im not sure if these issues are dealer related or manufacture related as i spoke to the previous owner and they stated they had the vehicle serviced at a manufacturer prior to doing a trade in with the dealer”
Owner complaint to NHTSAFiled Apr 29, 2024EngineODI 11585798

Power train

38 reports6 crashes1 related recall
“The contact owns a 2008 Toyota Sienna. The contact stated while driving 60 MPH, the vehicle unintendedly accelerated at a high rate of speed. There was no warning light illuminated. The contact desperately pressed on the brake pedal, but the vehicle would not slow down. The contact shifted the gear lever into neutral and the vehicle slowed down. The contact was able to pull over on the side of the road and shutoff the vehicle. The vehicle was restarted and operated normally. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 178,000.”
Owner complaint to NHTSAFiled Aug 24, 2023Power trainODI 11540621

Steering

33 reports
“The Vehicle VSC Engaged multiple times even at low speed of 30 mph under the road speed limit. The brake applied and even the vehicle stop to respond to the acceleration. We have 3 little kids and old parents in this vehicle.Toyota should own this problem and fix it free of charge as a factory recall.”
Owner complaint to NHTSAFiled Dec 12, 2022Steering, Unknown or other, Service brakesODI 11497165
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 27, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.