definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
35,419 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.

2001 Toyota Prius engine problems

engine problem

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2001 Toyota Prius Owner Comments

problem #4

Apr 172005

Prius 4-cyl

  • Automatic transmission
  • 69,212 miles


My 2001 Prius has been in for cpu replacements 4 times and a engine rebuild @ 69000 miles for the problem this site mentioned in the news about the 04-05 Prius stalling. They said it was low compression on the last service call. Well the problem is back!! even after a rebuild. So now what" oh and what is worst is that I have to take a photo of the problem lights because when the problem happens it produces no codes?!"! so they charged me $75 and did nothing once. Nice service. Where I take my Prius: Fox Toyota-Scion 415 taunton avenue East providence, ri 02914 phone (401) 438-0350, fax (401) 434-4574

- Riverside, RI, USA

problem #3

Jun 022005


  • miles
My 2001 Toyota Prius has intermittantly stalled, forcing me to pull over, turn off the ignition and restart. This appears to happen at any speed, and has happened 20-30 times over the past 18 months. I took it to the dealer twice for this problem approximately a year ago. They did a regularly scheduled major servicing but that did not solve the problem. The problem did not occur over the winter but has since resurfaced with warmer weather. I believe this is the same problem that NHTSA just announced was being investigated in 2004,2005 Prius models.

- Townsend, MA, USA

problem #2

Nov 152003


  • Automatic transmission
  • 37,700 miles
Problems started in November 2003. Had oil changed and an hour later all the warning lights came on in the vehicle. Immediately returned to the dealership where it took 2 weeks to replace the fuel pump (37,000 miles). Since then the car has been back to the dealership an additional 9 times to the current date (May 2005) for several different things. The computer has been replaced two times. The engine has been replaced. The injectors cleaned, then a few months later had to be completely replaced. The throttle body has been replaced. I have been driving the car when it would not acelerate and had to pull over in traffic. The first time the dealership said there were no warning lights when the car got to the dealership and they could not recreate the codes or situation so they could not do anything. The second time (April 2005) all four injectors were replaced as well as the mass air flow system. The car has been in the service department at our Toyota dealership for a total of 17 times since the car arrived at approximately 180 days!!! 10 of those 17 times has been because the warning lights have come on. Have entered into arbitration and we are awaiting an answer on the decision.

- Spartanburg, SC, USA

problem #1

Jul 292003


  • Automatic transmission
  • 34,763 miles
While driving, the car lost power and would start up again, but would not stay running. Car was towed in and the dealer put a new engine ECU- (computer). This took a month, as the computer had to be made in Japan. A year and a half later, the new computer has been replaced and the car continues to not start up. It has been in the shop four times this month, each time the car is returned to me and will not start the next day.

- Seattle, WA, USA

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