Toyota Sienna Problems — All Years, Common Issues & Reliability

The complaint was filed on behalf of the contact's employer. The contact drives a 2023 Toyota Sienna Hybrid. The contact stated that while driving at 5 MPH, the vehicle independently accelerated. The contact stated that the acceleration occurred while the contact was making a right turn. The contact stated that the vehicle shifted from hybrid to high speed within a second. The brake pedal was depressed, and the vehicle failed to stop as intended. The vehicle crashed into another vehicle before coming to a complete stop. The vehicle sustained damage to the front driver's side door. No warning lights were illuminated. No Police report was filed. No injuries were sustained. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact referenced an unknown recall which had a similar failure description, however the VIN was not associated. The manufacturer was not made aware of the failure. The failure mileage was approximately 12,000. VIN unavailable.

The contact owns a 2024 Toyota Sienna Hybrid. The contact stated that while the vehicle was at a complete stop, while attempting to depress the brake pedal, the vehicle unexpectedly lunged forward. There was no warning light illuminated. The contact stated that the failure had occurred several times without a warning light illuminated. The vehicle was taken to the dealer several times; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 31,600.

Due to safety recall 25TA12 anyone sitting in the second row has an increased risk of injury during a collision. This remedy has taken far too long to implement. The reason for the purchase included passenger capacity and safety. My use is now limited. Toyota should have already remedied this situation.

The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (Seats); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (Seats); however, the part to do the recall repair was not yet available. The dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

The contact owns a 2025 Toyota Sienna Hybrid. The contact stated that while driving downhill, the brake pedal was depressed, and the vehicle lurched forward. The failure reoccurred during the transition between braking and charging the braking system. No warning lights were illuminated. The vehicle was taken to the local dealer, but the dealer was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a service task. The failure mileage was approximately 25,000.

Toyota issued a recall in fourth quarter 2025 for this batch of Toyota Siennas that have bad welds on the second row seats and as a result of these, no one should be sitting in the second row. Toyota still doesn't have a fix in place for the 50k vehicles with this problem. Publicly Toyota says a fix is on the way, but at the dealership the service department has indicated that they've heard nothing on this. I am in a loaner from Toyota for the foreseeable future and it doesn't seem like I have much recouse through lemon laws based on the way Toyota issued the recall.

Rear windshield shattered between 4/16/2026, 10:04 AM and 4/16/2026, 6:43 PM without reason, no one near it to cause this broken windshield. I have Simplisafe camera that showed no one was near the car. See attached pictures.

2023 Toyota Sienna occasionally, without warning, "lurches" forward at low speeds when braking. While putting steady pressure on the brake when coming to a stop at a stop sign or traffic light etc. it feels as if the brakes stop applying pressure and if we wouldn't have quick reflexes to brake harder, we would roll out into the road or into the car in front of us. I believe it is something to do with the transition between regenerative braking (vehicle is a hybrid) and the hydraulic braking. I have spoken to Toyota, and they don't have any recall. People posting on online forums seem to believe there is a software update (T-SB-0047-24) that helps address the concern. Toyota charges to diagnose and apply software updates as the vehicle is out of warranty. I believe this to be a safety issue and something Toyota should cover. Based on my online search, there seems to be a lot of people with the same issue. This has been an ongoing issue the last couple of years and I'm thinking it should be reported. I have not brought this to a dealer to have diagnosed. These are largely family vehicles and my wife, and I don't feel very comfortable every time it happens.

I am filing a complaint regarding an unresolved safety recall for my 2025 Toyota Sienna involving the second-row seat welds. VIN: [XXX] NHTSA Recall ID: 25V668 Recall Date: October 7, 2025 Manufacturer/Dealer Recall Reference: 25TB12 This recall involves the structural integrity of the second-row seat welds. A failure of these welds could increase the risk of injury to occupants in the event of a crash or sudden stop. As of today, more than six months after the recall was issued, no remedy has been made available. I have not been provided with a repair, a timeline for when a fix will be available, or an adequate interim solution. On February 25, 2026, I brought my vehicle to the dealership, and it was placed out of service due to this recall. I was provided with a smaller loaner vehicle, which is not comparable to my Toyota Sienna and does not meet my transportation needs. This situation has left me without use of my vehicle for an extended period of time while also dealing with a known safety defect. I request that NHTSA review whether the delay in providing a remedy is reasonable and compliant with federal safety requirements, and whether additional action is necessary to protect vehicle occupants. All relevant vehicle details are included in this complaint. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (Seats); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

See attached document for complaint. My husband and I purchased a Sienna, 7-passenger van, April 2025 and have received two safety recalls, the first being the lack of second-row seats being installed correctly presenting a safety problem, and later a possible problem with the backup camera. We purchased a vehicle of that size especially for the convenience of transporting family when they visit. Also, we have a granddaughter, husband and one-year old great-grandson who live nearby and thought having a van would be helpful for trips together. Unfortunately, all our hopes were diminished at being able to enjoy the reason we purchased such an expensive vehicle, $65,000+. We are an elderly, retired couple, considered the vehicle an investment, because our two previous Toyota vehicles had lasted us for 15 years with no problems. Therefore hoping our daughter and grandchildren would be able to use the van for many years. The van has been nothing but an Albatross, not being able to drive it with only two passengers, in the front, since learning of the first recall on the second row seats. The local dealer told me if I’d get an appointment and be at their door at 7:00 a.m. they could repair the camera. BUT, dealers have no fix from Toyota for the second row seats. However, I went on line to the Toyota web site and they have a “FIX” process listed. I cannot imagine how a vehicle maker can be allowed to sell a vehicle when they find out it has such safety hazards? We consumers can beg our Legislators to pass laws to that effect, but, hope your agency will take the lead on protecting us consumers since we know this Congress will do nothing. I ask your agency to please take action on this issue and prod Toyota to do something concerning the major safety hazards with their 2025 model Sienna vans.