10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
2,600 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 Prius engine problems

engine problem

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2021 Toyota Prius Owner Comments

problem #2

May 082023

Prius

  • miles

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

The car accelerated without my foot on the accelerator, brake did not respond, and I had to drive through grass and a rock-filled ditch until after about 10 seconds the car returned to my control.

- Mountain Top, PA, USA

problem #1

Feb 262021

Prius

  • 5,200 miles
Carbon monoxide seeps into the passenger car but diller cannot find it and did not have tools to detect co level in the car. I can't use this car because was poisoned many times and after a second check-up, the level of co becomes higher so I can't drive the car without poisoning. Please help me. I am worrying to sell my car because other driver will get injury. This is the new car only 7000 miles.

- Palm Bay, FL, USA

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