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10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
3,333 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2021 Toyota Sienna drivetrain problems

drivetrain problem

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2021 Toyota Sienna Owner Comments

problem #3

Mar 012024

Sienna

  • miles

A D V E R T I S E M E N T S

About 25% of the time when I come to a stop and I am breaking, the car surges forward slightly. At first, I thought it was the way I was driving or the fact that it is an EV vehicle, which I had not driven before, but overtime it seems it is just the way the car operates. Others in the car have felt it happen as well as I have come to a stop sign or stoplight. I have not bumped into another car or anything but feel that that could happen if this is not corrected.

- Bedford, NH, USA

problem #2

Aug 102021

Sienna

  • miles
En ocasiones el vehículo no frena adecuadamente, tiene ruido en la parte delantera y se aselera bruscamente cuando está en descenso por aproximadamente 5 minutos

- Ponce, PR, USA

problem #1

Jan 012022

Sienna

  • 10,000 miles
The contact owns a 2021 Toyota Sienna. The contact stated while driving approximately 65 MPH, the vehicle would jerk and swerve to the left or the right making the vehicle difficult to control. The contact stated no warning light was illuminated. The contact stated that after decelerating the vehicle became controllable. The contact was able to drive to his destination. The contact stated that he had experienced the failure on three separate occasions. On the last occasion, while driving 70 MPH, the contact lost control of the vehicle and the vehicle ended up in the median striking the metal bars in the median. The air bags did not deploy. The contact did not sustain any injury and medical attention was not needed. A police report was filed. The vehicle was not drivable. The contact towed the vehicle to a tow lot. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 10,000.

- Indian Trail, NC, USA

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