really awful
Crashes / Fires:
35 / 1
Injuries / Deaths:
11 / 1
Average Mileage:
40,207 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.

2007 Toyota Prius engine problems

engine problem

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2007 Toyota Prius Owner Comments (Page 1 of 6)

problem #108

Oct 312016

Prius 4-cyl

  • 83,000 miles


Driving on a rainy day, ABS and vsc lights on dash came on. My car violently fishtailed almost 180 degrees, back and forth 6 times on a curve getting off a freeway (about 45 mph) nearly crashed. I proceeded very slowly to side street. Car shimmied to right making a left turn. Felt like I was driving on ice. Called a tow truck. Dealership found rodent damage to wires to wheel speed sensor. I discovered manufacturers using soy oil on wiring. $1300 repair.

- Everett, WA, USA

problem #107

Oct 032016

Prius 4-cyl

  • miles
Combination meter failure while driving. Unable to view speedometer or dash lights. Car sometimes locks up, unable to view ABS signal because dashlights become inoperable. Unable to turn car off during dashboard/combination meter failure.

- Dalton, GA, USA

problem #106

Sep 252016


  • 161,200 miles
The electronic dash (heads up instrument display) on our 2007 Prius has intermittently failed to light over the last year. Yesterday, it failed and also wouldn't turn off. We always use the remote (keyless) ignition system. But, after the failures yesterday I put the electronic key fob into the hole in the dash thinking that might help. Instead, I couldn't remove it. I tried every combination of pressing buttons (the park and power buttons) and other controls, brakes pedal, shifter and it still wouldn't shut off or light up the display. After holding the power button in for an extended amount of time, it turned off and ejected the key fob. But then the car wouldn't light up the instrument display or start. This morning, again, it would not start. I was told by an experienced Prius mechanic (also an owner) that these were classic symptoms of a failing power amplifier for the display and that it was a "secret warranty, " a voluntary repair to avoid a government recall, but that Toyota would only do it for 10 years. The dealer refused to do it under warranty even though the symptoms began before the car was 10 years old. They told me the recall was only good for nine years. They want $765 for the repair. It strikes me that this is a safety failure and should be covered, period. With no indication of speed or other functions (ABS function, traction control, etc.), or to turn the vehicle off, it is unsafe to operate the vehicle. The various failures, including loss of cruise control while in motion, took place when the car was cold and when it was warmed up. At rest and in motion.

- Tucson, AZ, USA

problem #105

Jun 192015


  • 164,420 miles


After speeding up to pass another car on a slight upgrade (2 lane country road), my Prius continued to accelerate. I could not slow the car down to the speed limit using the brake pedal. For about fifteen minutes, I kept trying to slow the car down, looking for a place to pull over where I wouldn't hit anything. The accelerator pedal was not stuck & no floor mat was touching either pedal. The only way I could stop was with the emergency brake. I thought the car might explode, but later realized the smoke was pouring out from my brakes. I maneuvered to the berm of a bridge over a lake, just before the road went down to one lane for construction. Then I turned the car off. Ten minutes after this ordeal (vehicle was stationary), I restarted the car, but the engine began racing again without any touch on the gas pedal, so I quickly turned it off. Luckily, I hadn't collided with anything.

- Canton, OH, USA

problem #104

Mar 192016


  • 72,000 miles
The traction-control system in the Prius is, I believe, dangerous. When the slightest degree of wheel slip is detected, it essentially shuts off power to the wheels for a moment. On a number of occasions, when accelerating to merge in with traffic on a wet road, the system's reaction has slowed me down to what I believe is a dangerous extent. On a couple of occasions, I have ended up stuck in snow because the system is so eager to keep me from spinning wheels at all. I contacted Toyota, and their reply was to the effect that this system is designed to protect the drive train, and that they are not going to do anything to remedy what I see as a dangerous flaw. The only conceivable way such a system could be protecting the drive train would be by limiting engine RPM to a safe point; however, the system goes far beyond just keeping RPM down. Please note that the response to "when did this happen" is not really accurate. It has happened on a number of occasions, and the date listed is merely the most recent occurrence. Also, the speed is just from the most recent occurrence.

- Wilmington, DE, USA

problem #103

Oct 112015


  • 69,000 miles
I got unintended high speed and I could not stop the car. It stopped because the wheel was hit by the curbe

- Norfolk, VA, USA

problem #102

Oct 262015


  • 135,000 miles


While backing slowly into a parking spot of an inner city supermarket in a busy residential area the car suddenly accelerated. It went over a 1 ft concrete curb limiter into the street and after a 180 degree loop in reverse I finally hit the E-brake hard while at the same time I ran over a pedestrian traffic light and hit a tree with the rear passenger side to a full stop. Air bags did not deploy. During all this period of probably less than 10 seconds the foot brake was not responding any more. After impact the engine did not start anymore and the car was towed from the scene.

- Seattle, WA, USA

problem #101

Aug 142015


  • 79,626 miles
The contact owns a 2007 Toyota Prius. The contact stated that while driving at low speeds, the vehicle experienced unintended acceleration which resulted in a crash in the garage. The failure occurred on two occasions. There were no injuries. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 79,626. Updated 01/21/16

- Brookline, MA, USA

problem #100

Sep 012015


  • 74,000 miles
When applying the brakes in traffic on a city road with a posted 35 mph speed limit, the car felt as though it surged forward briefly and accelerated followed by the anti-lock brake dashboard light coming on and off and then the brakes finally started working to slow the car down. This has happened about 10 times the last few weeks and has nearly caused me to rear-end other vehicles on the road.

- Alexandria, VA, USA

problem #99

May 262015

Prius 4-cyl

  • 12,000 miles
On Tuesday, May 26, 2015 at 5:04 pm while traveling at about 57 mph South on hi way 101 at about the mile post 255.5, my 2007 Toyota Prius suddenly and without any change in steering by me, veered to the right off the road and into the guardrail. There seemed to be no reaction to my frantic steering and braking in the attempt to return the car to the road. After the car hit the guardrail it traveled about 15 feet spun back out into the southbound lane and was hit on the rear right side by a car traveling in the southbound lane. This caused the car to be propelled across 2 northbound lanes of traffic and come to rest with rear of my car embedded into the far side guardrail. Miraculously no one was hurt. The police were called and my 61 year perfect driving record was ruined. My car was totaled by the insurance company...updated 08/27/15 update 9/15/15

- Bandon, OR, USA

problem #98

May 162015


  • 125,149 miles


On May 16, 2015, while driving my second-generation 2007 Toyota Prius on the freeway, I experienced a sudden loss of power, along with the illumination on the instrument panel of the malfunction indicator light, master warning light and hybrid warning light. I was able to maneuver the car to the side of the road and summon emergency help. A nearby Toyota dealership replaced the hybrid inverter water pump, which fixed the problem. However, the dealership did not advise me of a safety recall. Toyota customer experience center today stated that the original hybrid inverter water pump was replaced on April 7, 2011, under Toyota limited service notice A0N; hence, Toyota refused my phone request for reimbursement of my may, 2015, repair expense. The 2011 "A0N" replacement pump appears to have failed by the same failure mechanism leading to recall campaign "C0U", which is different from the A0N failure mechanism.

- Pleasanton, CA, USA

problem #97

May 312015


  • 159 miles
While driving uphill on a curved, shoulder-less road, my car spontaneously shifted into neutral, causing it to lose all power as well as power brake. I attempted to physically hold the gear shift in "drive", but this did not bring power back, nor did it change the light on the dash from "neutral". at first the car would shift into reverse, and I was able to back into a wider part of the road. It then stopped shifting into any gear. I ended up having the car towed home in neutral, with poor (non-power) braking. I've since done a google search and see that this is a recurrent problem with 200-something priuses, based on Consumer Affairs, Toyota nation, Prius online, and car problem zoo.

- Nevada City, CA, USA

problem #96

Sep 292014

Prius 4-cyl

  • 114,000 miles
2007 Prius dashboard lights malfunction - completely dark. See NHTSA # 10544698 and many other complaints regarding dashboard lights/cluster going completely dark and engine will not shut off. This is an extremely serious safety issue and dealerships will not repair for free. The part needed is a combination meter/cluster that costs around $1000 to repair from the dealer. Please everyone - push for national recall as this is an extremely dangerous safety issue.

- Clearwater, FL, USA

problem #95

Aug 292014


  • miles
While driving the car, the dash symbols vsc, ABS and the (!) turned on and the car started to beep inside. Alarmed at what was happening, I hit the brakes to find that they were not working and there was no resistance when pushing down on the brake pedal. I was in a parking lot when this happened and had to swerve to avoid hitting people walking around. After a minute or 2 of coasting I was approaching a dead end and chose to literally stand on my brakes which didn't immediately stop the car. After standing on the brakes with my full weight, the car slowly came to a rolling stop where I proceeded to put the car in park and turn it off.

- Jacksonville, FL, USA

problem #94

Jun 222014

Prius 4-cyl

  • 95,390 miles
I was traveling at 50mph when an alarm sounded in the car and 4 lights lit up on the dashboard ? the brake system warning light, master warning light, vsc and malfunction indicator lamp. The vehicle was taken to a Toyota dealership where they advised the hybrid water pump needed replacing. I then discovered there is a recall on the hybrid water pumps but was advised my vehicle was not on the list for the recall. The details of my mishap correlate to the Toyota recall notice that Toyota put out regarding the hybrid water pumps. I believe my vehicle should have been on the recall list to have this safety issue addressed and that the recall notice does not adequately cover all Toyota vehicles with this possible issue.

- Lubbock, TX, USA

problem #93

Jun 172014

Prius 4-cyl

  • 112,000 miles
While driving on the freeway, suddenly noticed slight jolt and illumination of various warning lights in the instrument panel (check engine, large warning sign, emergency car danger sign, vsc sign). Hybrid system ceased functioning, leading the car to drive using gasoline engine only. Dealership determined hybrid electric water pump was no longer functioning, needed replacement at cost of $570.

- Phoenix, AZ, USA

problem #92

May 012014

Prius 4-cyl

  • 110,000 miles
I had my car in for 110,000 mile service on April 25. They changed the oil, rotated the tires, installed a new air filter and said that I needed new front brakes and they cleaned and adjusted the back brakes. Yesterday after backing out of the garage the brake light warning light along with the ABS and vsc light came on briefly. On interstate 90 nearing downtown cleveland all of these lights came on again along with a noise. I called the Toyota dealer and talked to the service advisor and asked if it was safe to go to cleveland and back and he said if the brakes work, it probably just a switch and it would be ok to bring it in tomorrow. While I still had him on the phone, we lost all power to the vehicle and it decelerated down to 30 before we were able to reach an exit ramp and stop the car in the grass. I was informed today that the problem is a low volt battery that needs to be replaced for $299. At no time did a low battery light come on and I have not had trouble starting the car nor do I have dim lights. We were fortunate that we were not killed on interstate 90 without power, steering or brakes. I think this is definitely a safety issue that needs to be addressed.

- Chardon, OH, USA

problem #91

Apr 222014

Prius 4-cyl

  • 145,000 miles
While driving on highway about 60mph, vehicle suddenly lost brakes. Brake, ABS and vsc idiot light went on. Inside vehicle buzzer sounded. Very little hydraulic braking. Was only able to stop vehicle because I was going up hill.

- Stroudsburg, PA, USA

problem #90

Jan 112014

Prius 4-cyl

  • 41,604 miles
Parking my Prius, my foot on the brake pedal, I hit a very small patch of black ice with the right front wheel. The car slanted briefly to the left--then there was a sudden surge of engine power. The car rushed over a mound of ice and snow, jumped the curb, rushed forward between a wall and a tree, narrowly missing it, and crashed into a parked Toyota truck facing outward from the curb. My Prius hit the heavy truck with enough force to knock it six feet for their North and three feet to the West. After impact, the engine continued to make a lot of noise, a sound I've never heard before in seven years of driving the car. It was attempting to surge past the truck, which I believe caused the most damage to the front left bumper of the car. I was stunned and didn't think to turn off the ignition before it quit on its own after perhaps ten seconds. The body was sheared back, strips of blue paint hanging in shreds. I crawled out the passenger side unhurt. (the air bags did not deploy.)

- Santa Fe, NM, USA

problem #89

Feb 272013

Prius 4-cyl

  • 80,000 miles
My vehicle was hit by a fault driver and my vehicle air bags never exploded. I have sustained injuries to my neck, wrist and back after this accident. My vehicle has gas pedal acceleration after the accident and when I put the brakes to stop or slow down the vehicle my vehicle jumps up and increases the speed. I fear that this faulty parts of brake or gas paddle could result in another serious accident. This is my very valued asset because it takes me to work and brings me back. I hope that Toyota will investigate my problem very seriously and very carefully. My injuries are very serious and long lasting and I am seeing doctors for the last 13 months. I need help very very soon. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Everett, WA, USA

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