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10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
5,875 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 engine problems

engine problem

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2021 Toyota Sienna Owner Comments

problem #4

Feb 052024

Sienna

  • miles

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

I BELIEVE THE COMPUTER CAUSED THE PROBLEM. THE CAR IS AVAILABLE FOR INSPECTION AS PERSONNEL AT GETTEL TOYOTA IN PUNTA GORDA CLAIMED THEY COULDN'T TOUCH THE COMPUTER AND HAVE DONE NOTHING. Purchased Sienna in August 2021. In October at about 5:30 a.m. we were in the far left lane on a PA interstate, traffic came to a stop for construction. A delivery truck in front of us rolled backward a bit. When traffic started up again, our car would not go forward, only reverse. We tried "drive"--nothing--only had reverse. Finally, with cars whizzing around us, shut the engine off. Upon restarting, all gears were restored and we continued on to Boston. We were shaken by this event. Since then, we have had numerous incidents of the car not moving when I put it (mainly) into reverse. I had to shut the engine off--restart--and it went into gear. Latest incidents--first week February 2024--I pulled into a parking space at Englewood Hospital. After visiting my husband, came out, started the car, put it into reverse--NOTHING. Shut the car off--restarted it, and it was ok. Ten minutes later, I pulled off onto the shoulder to take a call from one of his doctors and--no gears. Shut off the engine, restarted it and it was ok. I'M WORRIED I'LL STOP FOR A TRAFFIC LIGHT ON ONE OF OUR 4 OR 6 LANE STREETS AND GET HIT BECAUSE OUR CAR WON'T GO INTO GEAR.

- North Port, FL, USA

problem #3

Mar 012024

Sienna

  • miles
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

Oct 172022

Sienna

  • 23,500 miles
The contact owned a 2021 Toyota Sienna Hybrid. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Soon after the malfunctioning hybrid system "pull over immediately warning message displayed. The contact stated while he was driving the vehicle to a nearby parking lot he noticed smoke coming from under the hood. The contact then parked the vehicle and removed a 4-year-old and a 1-year-old from their car seats. Flames came from the hood area and he grabbed a nearby water hose in an attempt to extinguish the fire and property owners had a fire extinguisher that was also used. The fire department arrived and extinguished the fire. A fire report was filed and there were no injuries. The vehicle was towed to the dealer and an investigation was completed where it was mentioned that the origin of the fire was the hybrid component. The results of the investigation were not released to the contact. The vehicle was declared a total loss. The manufacturer was made aware of the failure. The failure mileage was approximately 23,500.

- Goode, VA, USA

problem #1

Dec 242022

Sienna

  • miles
I would like to make formal complaint in regards to a manufacture defect. I purchased my Toyota Sienna XSE brand new in August of 2021 at Cerritos Toyota in California. On December 24th at approximately 1:30 p.m. on Christmas eve, after filling up gas at Sam's club in Fountain Valley, CA. I pull out on to the street heading northbound on Warner approaching intersection as I come to complete stop on red. All of a sudden, my Sienna completely shut itself off and the engine light came on. I put it back on park and restart the car. As I attempt to accelerate forward. The car jerk and the brake didn't work and the engine light came on. Fortunately, I was able to make a U turn and pull into a gas station near by ( Shell) and I thank the lord almighty there was no car right behind me. I could of gotten rear ended. It was the most terrifying moment of my life. My wife and I was in the car at the time of the incident. We waited patiently over an hour for Triple AAA to have it tow the nearest dealership next to my house in Long Beach, CA. My 2021 Toyota Sienna currently has 52,023 miles and sitting at the dealership to be repair at Long Beach West Coast Toyota. I have contacted Toyota of this incident and they refused to fully covered repair instead they offered me 700 payment assistant the rest would come out of my pockets. I believed the car should be part of the campaign recall and nothing should come out my expense. I would like you you guys to investigate the incident and look into this matter as soon as possible because there thousands like my mind that could there have the same issue but was not part the campaign recall. A bulletin was published on April 13, 2022 affecting 2021 -2022 Toyota Sienna. Production Period March 3rd, 2020 through April 7th 2022. Manufacture's Campaign Number: Toyota: 22TB03

- Long Beach, CA, USA

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