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really awful
Crashes / Fires:
48 / 0
Injuries / Deaths:
8 / 2
Average Mileage:
4,570 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.

2010 Toyota Prius brakes problems

brakes problem

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2010 Toyota Prius Owner Comments (Page 17 of 37)

« Read the previous 20 complaints

problem #418

Jan 102010

Prius 4-cyl

  • 12,573 miles


I drive a 2010 Toyota Prius. On multiple occasions while attempting to slow down on rough surfaces, the brakes temporarily stopped working for 1-2 seconds even though the brake pedal was depressed. The most recent incident occurred while exiting the highway and attempting to slow down quickly on rough pavement. Luckily, there were no other cars in front of me or there would have been a collision. If a car had been in front of me on any of the occasions then there would have likely been a collision.

- Liberty Twp, OH, USA

problem #417

Dec 242009


  • 3,200 miles
Drove car over several potholes and attempted to bake quickly. Brakes failed and I hit car in front of me. My car bounced off car in front of me and I again hit brakes sharply. They failed again and I hit the car in front of me again. Road conditions were wet and slippery.

- Indianapolis, IN, USA

problem #416

Jan 232010


  • 5,742 miles
The brakes on my 2010 Toyota Prius failed to engage while driving over a pothole. The car seemed to accelerate briefly but then the brakes kicked in once I hit the brake pedal again harder. This is the third incident of similar problems since I purchased the vehicle in July 2009.

- Tucson, AZ, USA

problem #415

Jan 232010

Prius 4-cyl

  • 400 miles


While slowing down with the brakes, when I hit a bump or pothole on the road, my car lurches forward for a split second and I lose control of the ability to bake.

- Houston, TX, USA

problem #414

Nov 232009


  • miles
1. I was driving on a local road and was switching lanes. I pressed my brake pedal very slightly as I was crossing the lane divider and as I hit one of the plastic bumps, my car accelerated forward. 2. this has recurred many times and there were no vehicles in front of me everytime it happened so I was able to come to a stop. Several times I would either cross the pedestrian walkway at the intersection when this acceleration occurs. 3. I took my car to the dealer several times and everytime they told me it was normal and there was no problem. They were lying and completely clueless!!!

- San Jose, CA, USA

problem #413

Oct 152009

Prius 4-cyl

  • 5,000 miles
I purchased a 2010 Toyota Prius in mid-June. I am writing to report that I have also experienced the loss of brakes while traveling over uneven surfaces three separate times. It is quite unnerving when you are in mid-brake and it momentarily stops working. I am a very safe driver, keeping a good distance between my vehicle and the cars ahead of me; however, sometimes you do need to stop suddenly and I am concerned that if there is a pot hole between me and the car, the Prius will not be able to stop in time. This problem has not resulted in any crashes but I hope that Toyota takes these complaints seriously and does everything possible to fix the 2010 vehicles manufactured before January 2010. On that note, I was extremely surprised to hear that Toyota knew of this issue and fixed it mid-year but did nothing to notify the owners of the initial 2010 model of their findings or offer a fix. That is bad business practice, something I did not expect from Toyota.

- Davis, CA, USA

problem #412

Sep 152009

Prius 4-cyl

  • 3,000 miles


On occasion the braking on our 2010 Prius has not felt right. Sometimes when braking and hitting a bump or pothole, there seems to be a brief period where the car feels like its accelerating or the brakes are not slowing it down properly. Keeping pressure on the brakes gets by the problem but it is very unsettling and I have never had this problem with brakes in any car before. It has happened a few times since we bought the car in July 2009 but very intermittently. The date I am picking is just an approximate date for one of the incidents. I am reporting this now in light of the recent publicity about similar events reported by other owners, which made me realize what I had been noticing was a real issue.

- Arlington, VA, USA

problem #411

Feb 042010

Prius 4-cyl

  • 30,000 miles
I own a Toyota Prius 2010 purchased in the summer of 2009. I have experienced braking issues under certain conditions.

- Alexandria, VA, USA

problem #410

Dec 192009

Prius 4-cyl

  • 3,000 miles
We drive a 2010 Prius, purchased this fall. On three separate occasions, when I tried to brake in an area with some ice, the car accelerated rather than stopped. On two of the occasions, I failed to stop at an intersection (no one coming in the opposite direction) and on the third, the ice patch was about 3 ft in diameter on one side of the car only. I was going rather slowly, following a car that slowed for a speed bump. Luckily the other car accelerated and I did not hit it. The speed bump slowed me down and then the brakes started working.

- Emmaus, PA, USA

problem #409

Feb 012010

Prius 4-cyl

  • 1,000 miles
Prius braking problem when going slow speeds over a bump or pothole.

- La, CA, USA

problem #408

Jan 242010


  • 1,160 miles


My Toyota pruis 2010 which I purchased on Nov.30 2009 had unexpectedly lurched forward when I was slowing down and applying the brake. I was taken by surprise and fortunately it stopped after I stepped on the brake very hard. This has happened several times already.

- Alhambra, CA, USA

problem #407

Feb 022010

Prius 4-cyl

  • 6,000 miles
I own a 2010 Toyota Prius which was purchased in September 2009. My brakes fail to immediately stop my car when applied going over bumpy sections in the road, hitting a pothole, or when on slippery sections of the road. When hitting a bump it actually feels like the car lurches forward. The car will eventually stop after pushing the brake to the floor with force. It is very disconcerting and the potential for hitting the car in front of you or a person is very high.

- Rochester Hills, MI, USA

problem #406

Feb 032010

Prius 4-cyl

  • miles
Whenever I am driving and hit a pothole or bump on the road, immediately after going over the pothole or bump I feel like my Prius surges forward or speeds up. This happens whenever I am going at a constant speed or when I'm braking. It has happened since I bought the car (two months ago) but yesterday morning it scared me more because I was going over a really bad road with many bumps. As I approached a red light I began to brake early but as soon as I got close to the stop there was a bump before it and my car lunged forward causing me to stop past the white line of the stop sign. This happens all the time when I hit a pothole or bump on the road.

- Chicago, IL, USA

problem #405

Feb 032010


  • 3,500 miles
When my 2010 Prius goes over bumps the brakes disengage for a second or two and the car lurches forward. This has happened several times.

- Scarsdale, NY, USA

problem #404

Feb 032010

Prius 4-cyl

  • 2,350 miles
Sudden temporary loss of brakes in a 2010 Prius.

- Burlington, NJ, USA

problem #403

Dec 172009

Prius 4-cyl

  • miles
2010 Prius - brakes stop working if they are being applied when car goes over bump or uneven road service.

- Scarsdale, NY, USA

problem #402

Jan 082010


  • 14,000 miles
Applied brakes at a stop light. The Prius (purchased in July of 2009) ran over a bump, and it seemed like the brake disengaged. I removed my foot from the brake pedal and reapplied the brakes. The brakes seemed to engage and came to a stop.

- Walnut, CA, USA

problem #401

Jan 112010

Prius 4-cyl

  • 7,000 miles
2010 Toyota Prius braking problem. I bought a 2010 Toyota Prius approx 4 months ago. During the approx 10000 miles I have put on the car, I have experienced a braking issue approx 5 to 6 times. Most times I was braking for a stop sign in a 30 mph zone. Once I was braking for a red light in a 45 mph zone. Each time, there was bumpy road during the braking, and the brakes released. I can't say if the car accelerated, or it just seemed that way because of the brake release. It did not cause any accidents, but once it was on a snow covered hill and I slid out into a 2 lane 50 mph highway. There was no traffic, and therefore no accident. Another time, I was stopping from 45 mph at a red light, and under braking, again on bumpy roads, the brakes released and I nearly hit the car in front of me. The brakes released enough allow me to panic and jam the brake pedal to the floor. The car stopped quickly.

- Vestal, NY, USA

problem #400

Jan 292010


  • 6,500 miles
My 2010 toyata Prius (purchased in Sept. 2009) has had repeated problems while braking over a patch of road with small potholes. If the brakes are engaged while over the patch of uneven road, the car lurches or "jumps" over the spot on the road and the brakes don't begin to catch until the car gets over the patch. This has happened 5-10 time over the last four months at a stop light.

- West Greenwich, RI, USA

problem #399

Feb 032010

Prius 4-cyl

  • miles
Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6) I am a retired colonel, usaf, but continue to work for the af as a civilian attorney. I purchased a 2010 Toyota Prius hybrid, [xxx], on 9 Nov 09. Since that time, as recent as last evening when I pulled the vehicle into our garage, between my wife and I we have experienced on approximately six occasions the problem you have received other reports about concerning the vehicle's brakes. The "release" as I call it, occurred primarily when we hit irregular patches of roadway, such as potholes, washboard-type surfaces and the like. Last evening, as I mentioned, it actually occurred as I was entering the garage. I approached a little faster than usual and was braking as the front tires encountered the elevated cement beyond the base of the garage door. The braking action was lost just for a moment after the impact with the cement. It's not that the engine speeds up when it happens, it's the forward momentum of the vehicle that increases with loss of the braking action. That has been the case each time it has happened. In fairness to the dealership, I have not notified it yet because I read not too long after the first time this occurred that other owners were beginning to report this problem and that Toyota was developing a software fix for it. I assumed shortly there would be something in the nature of a recall and owners would be notified to bring their vehicles in for the modification. I do intend to notify the dealership tomorrow, but thought it necessary to report this to you now given the spotlight put on it today.

- Floresville, TX, USA

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