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10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 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 fuel system problems

fuel system problem

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2021 Toyota Sienna Owner Comments

problem #3

Jun 032024

Sienna

  • miles

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

Check engine light came on - Taken to dealer, diagnosed following 2 codes : P24517F and P14502A Both of these codes are known problems to Toyota, and as such a Service buliten for the Evap Emission System Switch Valve has been issued per NHTSA. This problem should be a recall, not a known service issue - it is obviously a common problem with Toyota in the Hybrid engines.

- Franklinton, NC, USA

problem #2

May 162024

Sienna

  • miles
There has been several incidents when I step on the brakes and the vehicle seems to accelerate forward after what feels like an attempt to find the right gear when decelerating. This occurs infrequently but usually when decelerating along with an external factor. I was able to consistently replicate when I-??m coming off the highway onto a service road then have to make quick turn at a corner. It feels as if the vehicle is trying to search for a gear and once it finds it there-??s a momentarily acceleration forward.

- Staten Island, NY, USA

problem #1

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

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