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 3 of 6)

« Read the previous 20 complaints

problem #68

Apr 022010

(reported on)


  • miles


2007 Toyota Prius. Consumer states unintended acceleration. The consumer stated he was parking the vehicle and when he shifted the gear from drive to neutral, with his foot on the brake, the RPM accelerated to approximately 4000, so he pushed the power off button to turn the vehicle off.

- Fountain Valley, CA, USA

problem #67

Mar 102010


  • miles
The contact owns a 2007 Toyota Prius. The contact was driving approximately 65 mph. When pressure was applied to the accelerator pedal the vehicle would not exceed over 45 mph. The gear was shifted from neutral into the park position. The contact was able to pull over to the side of the road and turned the engine off. The vehicle restarted after waiting for a minimum period of one minute. The vehicle resumed to normal. The contact was waiting on the second recall notification letter which provides the recall remedy. The failure mileage was unknown. The current mileage was 35,000.

- Norwalk, CA, USA

problem #66

Dec 172009


  • 26,000 miles
The contact owns a 2007 Toyota Prius. While traveling at speeds of 10 mph attempting to park in her garage, the vehicle failed to stop when the brakes were applied. The vehicle continued to abnormally accelerate. The brake pedal fell onto the floor board and would not engage. The vehicle proceeded to crash into the garage door. The dealer advised stated that there were no unusual failures in the vehicle. The manufacturer confirmed that the vehicle was under recall for defective floor mats but not for her accelerator pedal. No repairs were made to the vehicle. The approximate failure mileage was 26,000 and the current mileage was 27,000.

- Springfield, VA, USA

problem #65

Mar 102010


  • 21,000 miles


I have been driving a 2007 Toyota Prius since July 2007. The hid headlights switch off automatically while driving. Sometimes the left hid switches off but the right headlights stays on. The headlights turn off but the display from the inside says that headlights are turned on. The headlights come on if I turn the headlights off and turn them back on then both of them are working till they switch off again during driving. Almost got in a T-bone accident when the other driver did not see me. If I am driving using cruise-control, the car seem to speed up a bit just for a sec a or two when you initially apply brakes.

- Rockford, IL, USA

problem #64

Mar 062010


  • 31,000 miles
2007 Toyota Prius accelerated on its own.

- West Orange, NJ, USA

problem #63

Mar 112010


  • 42,000 miles
I am writing to explain two problems I have had with my Toyota Prius. I want to have a documented of report of these problems in the event that they result in a serious accident, as I fear they might. I have experienced these problems on a number of occasions. The first problem occurs whenever I drive over rough or uneven payment. When the traction control kicks in, it feels as if the car is surging and it is necessary to step on the brake, sometimes with both feet, very hard in order to get the car to slow down or stop. I have taken the car in for this problem a couple of times. I have driven cars with traction control in the past and never felt the surging that occurs with the Prius, when driving other cars using other traction control systems. The other issue with the car is that occasionally, when accelerating, my normally silent Prius makes a loud revving noise. Whenever I hear this noise, I immediately take my foot off the gas. Thankfully, so far, the noise stops and the car slows down. The noise does not occur every time I accelerate, but it seems to be happening with increasing frequency. I am not sure if other Prius owners, especially those who have been involved in accidents, have reported this issue or noticed the revving noise prior to their accidents. But, I thought it might be an important piece of the puzzle that should be reported. I hope this information is useful. Quite honestly, I am a concerned each and every time I get into my car. But, with a year remaining on my lease I have little choice but to engage in what I feel is increasingly a game of Toyota owner russian roulette to get to school and do all the things I need to do.

- Chandler, AZ, USA

problem #62

Mar 112010


  • 61,000 miles


1) two times my car has accelerated on its own, and I had to feather the gas pedal to get it to stop accelerating, which took under a minute to correct. 2)when braking the car, if you hit sand or a bump which causes the slippery light to come on, the car transistions from generating power, to all brakes, at which point the car accelerates as there is an interruption and a short period of time where there is no breaks. 3)when you are coming to a stop such as at a bank drive-thru, when placing the car in park while only the electric system was running, if the motor turns on while still in park, the entire car launches forward 1-2 feet, extremely dangerous.

- Preston, CT, USA

problem #61

Mar 102010


  • 45,529 miles
My 2007 Toyota Prius was in park, engine running. I then pushed on the gas and the pedal stuck. I turned the car off, and the engine stopped revving. I then turned the car back on and the car ran fine. I am presently in S. Carolina and will drive to Canada next week with my two children, so am very concerned about getting in the car. What should I do?

- Mt. Kisco , NY, USA

problem #60

Aug 122008


  • 14,107 miles
Just completed a left turn behind another vehicle. The other vehicle then slowed to make an immediate left turn into a gas station across the road. I was gently applying the brakes to keep my following distance (10ft, traveling about 8mph). The other car suddenly applied the brakes harder to turn, when I pressed harder there was no reaction until I hit the other car, at which point the brakes engaged and I stopped.

- Tucson, AZ, USA

problem #59

Dec 202009


  • 32,500 miles
I was pulling into a parking spot at the local federal express hub and the vehicle would not stop. It jumped the curb and went into the trees then stopped. I was braking the whole time. Damage to the car was minor cosmetic scratches.

- Indio, CA, USA

problem #58

Feb 152010


  • miles


My 2007 Toyota Prius accelerated unintentionally during a lane change. I hit the brakes and this remedied. The floor mat was not involved. I might have had the cruise control on, but I don't remember for sure.

- Burbank, CA, USA

problem #57

Jan 052009


  • 0 miles
Vehicle was sb in lane 2 of 2 when it is reported that the driver lost control struck a guard rail on the right then traveled across two lanes crossing onto a shoulder where it eventually struck a tree. Eye witnesses saw no brake lights at any point. Autopsy concluded that the driver died from trauma caused by impact with the tree. The vehicle was a 07 Prius.

- Seattle, WA, USA

problem #56

Jan 132009


  • miles
I own a 2007 Toyota Prius. About a year ago, my accelerator malfunctioned while I was driving. My car suddenly wanted to dramatically increase speed and I had no control over it. I almost got into a really bad car accident. Now I'm hearing that this exact thing is happening to other people with the same car as me. I have tried calling my local Toyota dealership, and they just tell me that there is nothing they can do about it until I get a recall in the mail. I have tried calling customer service, and no one ever picks up the phone. I have emailed Toyota expressing my very strong feelings about this, and I have yet to received an email back. I am very upset about this. I am very scared to drive my own car, and I do a lot of driving. I can't pay to get my car fixed because I am a student. I feel like Toyota is just telling people that they are doing everything they can to help their customers, but I feel that they have treated me with the exact opposite attitude. I also feel like they aren't going to take this problem seriously until there is a tragedy from this malfunction. I really need my car fixed before I get into a bad car accident, but Toyota doesn't seem to care.

- Carol Stream, IL, USA

problem #55

Mar 052010


  • 53,000 miles
Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6) 2007 Toyota Prius (VIN: [xxx] ) - cruise control malfunction. Set cruise control for speed limits between 55 mph and 75 mph; within a few seconds of the cruise control being switched on, car automatically accelerates to an uncontrolled higher speed until the brakes are applied (usually in panic of plowing into another vehicle's rear end).

- Santa Rosa, CA, USA

problem #54

Feb 222010


  • 48,900 miles
I drive a 2007 Prius. Recently when driving over pot holes, the stability control kicks in and the vehicle lunges forward ( unintended acceleration). This behavior is pronounced on bigger pot holes and less in severity on uneven roads or smaller pot holes.

- Belleville, MI, USA

problem #53

Oct 032009


  • 18,000 miles
I own a 2007 Prius, and have enjoyed the car...however, sometime in October,2009, I was driving to a wedding shower and the car suddenly accelerated when I was entering a multi-lane expressway.. it would not decelerate when I eased off the accelerator..and I had to veer across lanes to avoid hitting a truck in front of me. Simple braking did not stop the acceleration, only very hard and continued and panicked braking. On the way back, on an area of interstate that was free of vehicles, I was able to recreate the acceleration by 'stomping" on the accelerator. Again, it would not stop accelerating when I took my foot off the accelerator..and only after stomping the brake a lot did it return to regular responsiveness. I have not "tried" that again, and my husband did try, but could not duplicate my experience. We contacted our local Toyota dealer (greentree in clarksville, in) and they were not responsive. Later in the fall, after the recall about floor mats, we were told to take the floor mat away on drivers side, and a "fix" would be developed. I am now fearful of the car. I am reporting now because I do not believe that the Prius problem is a simple floor mat issue (never did, but am a woman and certainly not "knowledgeable" so as to refute Toyota's engineers..).

- Jeffersonville, IN, USA

problem #52

Feb 282010


  • 43,279 miles
The contact owns a 2007 Toyota Prius. The contact experienced a sudden acceleration while driving 18 mph. The failure occurred when the contact a stop light. As the contacts foot released the accelerator pedal, the vehicle continued to accelerating. After three attempts the contact was able to apply enough pressure to the brake pedal to stop the vehicle. The current and failure mileages were 43,279.

- Davie, FL, USA

problem #51

Jul 052008


  • 100 miles
I have a 2007 Prius, and every time I go over a bump in the road, my car accelerates, and I get a run away feeling that lasts about 30-45 seconds. In addition, when I am at rest, and the motor is on and my foot in on the brake, the car makes a noise as if the horn is lowly honking. I have described both of these things to my dealership, and they told me that they never heard of this problem before. They said that they checked it out. It still remains.

- Rockville, MD, USA

problem #50

Mar 152007


  • 54,000 miles
The contact owns a 2007 Toyota Prius. Whenever the contact placed the vehicle in park or neutral the vehicle suddenly surged forward without warning. The vehicle was taken to the dealership where the contact was informed that the failure could not be reproduced. There were no prior warnings. The current and failure mileages were 54,000.

- Florence, TX, USA

problem #49

Oct 162009


  • 60,000 miles
The contact owns a 2007 Toyota Prius hybrid. The contact was driving approximately between 60-65 mph on normal road. The accelerator pedal began to stick. The driver side floor mat was entrapped underneath the accelerator pedal. The driver was able to remove the floor mat while pressure was being applied to the brake pedal. The vehicle was able to slow down. The identical failure occurred on a separate occasion. The vehicle was taken to an authorized dealer for diagnostic testing. The technician was unable to duplicate the failure. The failure mileage was 60,000.

- Burbank , CA, USA

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