really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
2 / 0
Average Mileage:
11,079 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.

2005 Toyota Prius engine problems

engine problem

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2005 Toyota Prius Owner Comments

problem #7

May 272010

(reported on)


  • Automatic transmission
  • miles


2005 Toyota Prius. Consumer expresses discontent with dealer response and recall the consumer stated on three separate occasions, when accelerating to pass and merge, the brake did not deactivate the cruise control. The consumer stated if felt wa though the vehicle was accelerating on its own. The consumer stated he did receive a recall notice in the mail regarding an accelerator problem.

- Lakeside, CA, USA

problem #6

Mar 142010

Prius 4-cyl

  • Automatic transmission
  • 40,000 miles
The contact owns a 2005 Toyota Prius. While attempting to pull into his driveway to park the vehicle and depressing the brake pedal simultaneously the vehicle abnormally accelerated. The brakes would not engage and the vehicle crashed into the garage cement wall. The contact immediatley engaged the emergency brake in an attempt to stop the vehicle from proceeding any further. The passenger in the vehicle sustained minor injuries to her head and face area. The police arrived and a report was filed accordingly. The manufacturer was contacted and he was awaiting a reply, to date. Two months prior to the incident, he noticed his vehicle was under recall (NHTSA campaign id number: 09V388000: Vehicle speed control:accelerator pedal) and took the vehicle in for repairs. The dealer advised him there was nothing wrong with the vehicle upon a visual inspection. A diagnostic was not performed on the vehicle and the vehicle was released to the owner. The failure and current mileages were approximately 40,000. Updated 6/1/10 updated 06/17/10

- Miami, FL, USA

problem #5

Oct 062007


  • 15,000 miles
The contact owns a 2005 Toyota Prius. The contact was driving between 65-70 mph. The accelerator pedal began to stick without warning. The vehicle slowed down after the accelerator pedal was released by positioning his foot underneath the pedal. The failure mileage was 15,000. The VIN was unavailable.

- Columbus, OH, USA

problem #4

Jun 082006


  • miles


2005 Toyota Prius with unintended acceleration. Consumer states that the vehicle accelerated without warning and caused him to hit the vehicle in front of him.

- Lexington, MA, USA

problem #3

Aug 102006

Prius 4-cyl

  • Automatic transmission
  • 14,000 miles
2005 Toyota Prius, 10 months old, 14,000 miles. My wife experienced an unintended acceleration while coasting down interstate at 65 mph with feet off pedals. Vehicle surged to 90 mph even though she applied both regular and emergency brake during acceleration. She checked both feet on brakes not obstructed. She exited interstate and careened through small town eventually ditching vehicle through forest, ending up in a river after somersaulting end over end 3 times, clipping off trees 10 feet above the ground. State patrol investigation concludes accelerator caused accident. Numerous contacts with Toyota beginning day of accident. No action by Toyota as of March 2007. */10/09 cw ** updated 12/14/09

- Eagle, CO, USA

problem #2

Apr 252005

Prius 4-cyl

  • Automatic transmission
  • 6,000 miles
2005 Toyota Prius -- floormat becomes lodged between pedals. -- while driving at high speeds (60-70 mph) on the freeway, I noticed a loss of sensitivity on both the brake and gas pedals. I had to press very hard to get a reaction from either pedal. As a result I was unable to keep driving at the same speed as the surrounding cars. Everything else seemed to be operating normally. The sensation continued for a few minutes until I could safely pull off of the freeway. Upon investigation, I realized that the floormat had come unhooked from its restraints and stuck between the pedals and the floor. I secured the floormat to its hooks once again and continued driving without trouble. This has happened a couple times since, but I recognize the symptoms and fix it promptly. However, I fear that another owner might experience this when they need to brake or accelerate suddenly to avoid an accident. (I noticed another posting that described the same problem). Perhaps Toyota should install locking hooks rather than the current ones that easily twist and unhook from the mats.

- West Hollywood, CA, USA

problem #1

May 072005

Prius 4-cyl

  • Automatic transmission
  • 2,550 miles
Car was being driven on multi-lane city arterial in moderate traffic. To try to quickly avoid an obstructing vehicle ahead, driver rapidly depressed accelerator pedal to fullest extent while steering. Car then immediately, and without warning, lost all engine power and rolled to a stop. Two general warning lights on dashboard illuminated. Repeatedly depressing accelerator pedal produced no motion or other result. After engaging emergency flashers, only way to regain engine power was to shut off ignition, which required engaging parking circuit and depressing power on/off button, then after shutdown procedure was complete, again pressing power on/off button and waiting for hybrid system to energize. Warning lights again came on but car now responded to accelerator and driver was able to move to parking lane. This was the third time in the eight months of owning this new car that such a sudden shutdown occurred. After the first two times in late November-early December 2004, car had been taken to dealer for service and was returned to owners reported as fixed by replacing faulty accelerator sensor.

- San Francisco, CA, USA

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