really awful
Crashes / Fires:
7 / 1
Injuries / Deaths:
1 / 1
Average Mileage:
13,385 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.

2008 Toyota Prius engine problems

engine problem

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2008 Toyota Prius Owner Comments

problem #13

Apr 222011

Prius 4-cyl

  • 30,000 miles


The contact owns a 2008 Toyota Prius. The contact stated that while attempting to park, the vehicle suddenly accelerated. In addition, while shifting into reverse, the vehicle would not respond. The vehicle was then shifted into drive and the vehicle rapidly accelerated and crashed into a tree. There were no injuries and a police report was filed. The vehicle was towed to the dealer where the contact was awaiting a diagnosis of the failure. The manufacturer was then contacted who referred him back to the dealer. The vehicle was not repaired. The failure and current mileage was 30,000. Updated 05/24/11 updated 05/25/11 updated 06/16/11

- Harwich , MA, USA

problem #12

Jul 012010


  • miles
2008 Toyota Prius. Consumer states unintended acceleration the consumer stated as she was coming to a complete stop with her foot on the brake, the vehicle suddenly accelerated. Within about 1/10th of a second, it was moving at a very high rate of speed. The vehicle did not increase speed gradually, but was almost instantly moving very fast. The consumer stated she could hear the engine revving quite loudly. The vehicle crossed a grassy area about 20 feet wide and then hit a post which was about 6 inches in diameter. It demolished the post and then plowed through some small trees and large shrubbery. The vehicle finally came to rest about 10 inches from the corner of a house. The consumer stated prior to the accident, she received a recall letter in the mail, and complied with the recall. However, since the recall was performed, she noticed that when the cruise control was activated and going up a rise in the road, the engine would start to audibly rev and the vehicle would gain 2, 3,4 mph over what was set for the cruise control speed. It also gained a few miles when on a downward slope. As soon as the road leveled out, it would go back to what the cruise control setting was. The consumer took the vehicle back to the dealer, but they dismissed it as not important and said it was a normal occurrence and it had nothing to do with the recall work they performed.

- Wakefield, RI, USA

problem #11

Aug 122010


  • 30,000 miles
The contact owns a 2008 Toyota Prius. While driving approximately 5 mph into a parking space. The contact engaged the brake pedal and the engine revved extremely high with an increase in the acceleration. The vehicle would not stop and traveled over a cement parking block. The vehicle continued to accelerate and crashed into a brick wall. The air bags failed to deploy with the impact involved. There was no personal injury. A police report was filed of the incident. The estimated cost for the brick wall damages was $2,500. The vehicle was repaired under the NHTSA campaign id number 09V388000 (vehicle speed control: Accelerator pedal) in June of 2010. The contact stated the remedy did not correct the problem. The vehicle was towed to a collision center. The failure mileage was approximately 30,000.

- Dekalb, IL, USA

problem #10

Jun 102010

Prius 4-cyl

  • miles


2008 Toyota Prius with unintended acceleration. An inspection was performed on the vehicle. According to the dealer, the front and rear brakes were completely worn, the rotors were also worn and were in need of replacement. The brake fluid was within normal limits and there was a fluid leak from the impact damage. The accelerator pedal was in good condition and moved freely with no binding or sticking. The drivers side floor mat was an aftermarket all weather mat, not properly secured. It was positioned forward where it could interfere with the accelerator. According to the letter the brakes caught on fire and a motorist extinguished the fire. Updated 12/30/10 updated 01/07/11

- Glen Aubrey, NY, USA

problem #9

Jul 012010


  • 50,000 miles
The contact owns a 2008 Toyota Prius hybrid. She took the vehicle to the dealer for a routine oil change and was told that the vehicle was on the Toyota recall list for the NHTSA recall 09V388000, vehicle speed control, accelerator pedal. The dealer repaired the accelerator pedal by cutting it but it was too short and caused her foot to become stuck underneath the pedal. The contact stated that her vehicle was unsafe to drive. The dealer advised her that the specifications and the design of the pedal are required per the recall and could not be altered. The manufacturer was called and confirmed what the dealer told the contact about the recall repair. The failure and current mileages were 50,000.

- Southport, FL, USA

problem #8

Jan 282009

Prius 4-cyl

  • miles
2008 Toyota Prius. Consumer states unintended acceleration which caused an accident. The consumer stated as he was applying the brakes to keep from hitting a huge dirt mound, the vehicle accelerated instead of braking. He went over the mound onto some railroad racks. The consumer stated he experienced sudden acceleration on several occasions prior to the accident, but dismissed it. The consumer continued to experience sudden acceleration after the accident. The consumer no longer owns the vehicle. No police report was filed.

- Sun Valley, CA, USA

problem #7

Jun 072010

(reported on)

Prius 4-cyl

  • miles


2008 Toyota Prius. Consumer states problem with vehicle floor mat the consumer took the vehicle to the dealer to comply with the accelerator pedal recall. When the consumer picked up the vehicle, he noticed the drivers floor mat was still missing from where he had placed it in the trunk and that the area had not been vacuumed. The consumer stated the procedures had not been followed as stated in the recall. The consumer didn't believe the floor mat inspection had been done, and only the accelerator pedal was modified.

- Oakton, VA, USA

problem #6

Nov 302009


  • miles
2008 Toyota Prius. Consumer states unintended acceleration and receipt of a recall notice the consumer stated she pulled into a parking space going very slow, when all of a sudden the vehicle accelerated out of control ran over a parking cement block and then hit a bush. The consumer removed the floor mat, however a week later the same incident happened. The vehicle was taken to the dealer, but they were unable to find anything wrong.

- Monocacy Station, PA, USA

problem #5

Oct 012009


  • 24,000 miles
The contact owns a 2008 Toyota Prius. The contact was driving approximately 25 mph, approaching a stop sign. While coming from a complete stop, the accelerator pedal was engaged and traveled to the floor. The accelerator pedal was in a stuck position unable to release. When pressure was applied to the brake pedal, the vehicle continued to accelerate. The ignition was turned off and the vehicle stopped; however, when the vehicle was restarted the failure continued. The vehicle was driven to the side of the road. The engine was turned off for a moment. The vehicle restated and resumed normally. The failure occurred on several different occasions. The vehicle was taken to an authorized dealer. The technician was unable to duplicate the failures. The manufacturer was notified and a complaint was filed. Also, the manufacturer advised the contact to have the vehicle towed to a dealer if the failure occurred again. The failure mileage was 24,000. The current mileage was 29,943.

- Williamsburg, VA, USA

problem #4

Feb 282010

Prius 4-cyl

  • 40,000 miles
The contact owns a 2008 Toyota Prius. While the contact was driving 30 mph the vehicle suddenly accelerated without warning. In order to stop the acceleration the contact had to physically pull the accelerator pedal up from the floor. The vehicle has not been diagnosed by the dealership. The current and failure mileages were 40000. Updated 05/10/10 updated 05/1010 updated 05/13/10.8jb

- Flushing, NY, USA

problem #3

Aug 132009


  • miles


Ltr fwd on behalf of (mi) re Toyota braking problem in her 2008 Toyota Prius, reply to lansing, mi ofc. The consumer was involved in accident. The consumer was stopped at a stop sign behind two vehicles going South at an intersection, waiting to turn right. The consumer stated her first practice in driving the vehicle, when starting from a stop is to simply take her foot off the brake pedal and allow it to start moving without putting her foot on the gas pedal, to maximize fuel efficiency. As she moved her foot toward the gas pedal, but not quite on the pedal, the vehicle suddenly lurched at a very high RPM and hit the vehicle in front of her, which was about 3 feet. She applied the brakes again, and the same thing happened. The consumer stated the damage to both vehicles were minimal. The consumer stated the incident happened again, but without incident.

- Washington, DC, USA

problem #2

Sep 102009

Prius 4-cyl

  • miles
Driver in Toyota Prius was stopped at a red light. According to witnesses, for no apparent reason the vehicle accelerated, rolled or drove into intersection where vehicle was struck by another vehicle. Prius driver was killed. Updated 03/14/10 according to the police report, there was only one death and no injuries. Updated 06/15/10. Update 9/21/2011

- Bohemia, , NY, USA

problem #1

Apr 012009


  • miles
Electric throttle problem on the 2008 Toyota Prius. The dealer told the consumer to remove the floor mats. The consumer also received a letter regarding the defect. The consumer stated no one has contacted her regarding a remedy for the defect.

- Englewood, CO, USA

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