Home · 2023 Toyota Sienna · Complaints

What 62 owners told NHTSA about the 2023 Toyota Sienna

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (62)Crash / fire / injury (9)Brakes (24)Visibility & wipers (7)Electrical system (6)Airbags (3)Body & structure (3)Seats (3)Seat belts (2)Speed control (2)Transmission & drivetrain (2)Driver assistance (1)

3 of 62 complaints match · Seats · clear filters

Jul 6, 2026Seats

On June 11, 2026, a BraunAbility Turny Evo seat system, installed by a third-party mobility dealer, suffered a catastrophic mechanical failure while in operation. A passenger with a physical disability was secured in the equipment when the mechanism seized, trapping the individual mid-cycle. The remote control displayed a mandatory "Code 19" error, rendering the equipment unresponsive and creating an immediate safety crisis. Beyond this mechanical failure, the vehicle's structural integrity is compromised. The floor plates and railings, which are critical for the securement of this mobility equipment, are loose and rattling, posing a severe risk of detachment while in motion. Furthermore, the interior upholstery was permanently damaged during the installation process, and a secondary mobility hoist system—which was paid for in full—was never installed. The dealer and the manufacturer have been notified of these dangerous structural and mechanical defects but have failed to provide a safe, complete repair. The vehicle is currently unsafe to operate and poses a direct threat to the safety of the passenger.

NHTSA ODI 11748630

Apr 27, 2026Seats

The drivers rear seat on toyota sienna minivans has play in it. My concern is that when you install a car seat tight, the seat has play and can loosen. I can send a video. Picture won't help. It appears to be a common issue with these.

NHTSA ODI 11734036

Aug 18, 2023Seats

The 3rd row seats in the Sienna do not stay stowed as there is no lock. This creates a very dangerous situation when braking. I just got this car a few days ago and already have issues. When I brake or go over bumps, the stowed 3rd row seat pops up a little. That's okay, until you brake. In one instance, I had to brake harder than usual during a traffic incident in front of me, and the 3rd row seats flew forward (up and out of the stowed position) and slammed into the 2nd row seats. It was loud and scary. My child was sitting in the 3rd row (split 3rd row so only one side was stowed) and the seat flying up and forward almost broke her leg as she was sitting with one leg out to the side. We even had items on top of the seat to keep the 3rd row from bouncing and popping up, but that is not a safe solution either. This is an issue reported for recent years on Toyota forums. I called Toyota to report it. I have read the owner's manual to make sure I am stowing the seats correctly. Any animals or children near a stowed 3rd row seat could be seriously injured.

NHTSA ODI 11539331

Working with the data? Download all 62 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2023 Toyota Sienna verdict →