definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
30,642 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.

2004 Toyota Prius engine problems

engine problem

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2004 Toyota Prius Owner Comments

problem #4

Jul 072010

Prius 4-cyl

  • miles


2004 Toyota Prius with unintended acceleration. The consumer stated he experienced sudden acceleration after the recall was performed. The consumer also stated someone else drove her vehicle and he experienced sluggish acceleration of the vehicle. A message flashed quickly, but he was unable to read it.

- Mesa, AZ, USA

problem #3

Feb 072009


  • 56,767 miles
The contact owns a 2004 Toyota Prius. While driving at approximately 20 mph, the floor mat became stuck inside the accelerator pad. The vehicle accelerated and the contact pressed a button to turn off the vehicle. The vehicle was taken to an authorized dealership but the dealer could not duplicate the failure. The failure occurred two times after recall repair was performed for recall 09V388000 (vehicle speed control: Accelerator pedal). The failure mileage was 56,767. The current mileage was 71,734.

- Manhanttan Beach, CA, USA

problem #2

Oct 152009


  • 65,000 miles
The contact owns a 2004 Toyota Prius. While merging onto the highway at approximately 50 mph the accelerator pedal became stuck. The vehicle accelerated to 80 mph before the pedal released.the vehicle was taken to an authorized dealer. No repairs had been made. The failure occurred once. The failure mileage was 65000. The current mileage was 71000.

- New Canaan, CT, USA

problem #1

Oct 122004

Prius 4WD

  • Automatic transmission
  • 800 miles
The acclerator stuck continuously, causing the vehicle to stall and shutdown. Dealer has been unable to duplicate the problem, and the manufacturer offered no solution.

- Montara, CA, USA

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