really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
46,025 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.

2011 Toyota Prius miscellaneous problems

miscellaneous problem

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2011 Toyota Prius Owner Comments

problem #8

Dec 042016


  • 90,100 miles


On November 4, during a routine maintenance appointment, it was discovered that our Prius is completely invaded with mice, from where the wind sheild meets the dashboard, all the way through the entire car - between the visible interior and the metal frame - to the rear hatch door latch. We learned that Toyota is well aware of this problem, ​ due to how it is designed, which greatly allows for rodents to enter the car's cabin and trunk area via the heater box and cabin filter area. This is a particular health hazard....a significant one. To remedy the issue the service department ha​D​ to literally strip the entire interior of the car down to the metal, from windshield to trunk latch. Every thing ha​D​ to be taken out, several parts replaced (including the carpet which was damaged on the underside), or cleaned and reinstalled. This costs thousands of dollars and over a month of time. I have invoices and statements but do not know how to convey those to you, based on the instructions given.

- New Lebanon, NY, USA

problem #7

Apr 022015


  • 65,000 miles
Got hit on the front left side of veh. Not at fault and I believe the other party might have provided false papers. But the reason for the complaint is my airbags didnt deploy"?" front bumper cover bumper and radi. Had damages. In my nonenexpert opinion enough to cause it to eeploy

- South Pasadena, CA, USA

problem #6

Aug 012016


  • 44,000 miles
Driver side door lock failed and shortly thereafter the front passenger door lock also failed. We have owned a total of five Prius vehicles since 2007 and have never experienced this problem before this dual failure. Judging from the number of complaints on this site and info gathered during internet research it appears this is a widespread problem, most likely due to poor quality or defective door lock actuators. A google search (Toyota Prius "door lock" failure) resulted in a quarter million results.

- Aiken, SC, USA

problem #5

May 232016


  • 63,000 miles


2011 Toyota Prius 3. ( most models 2010-2014) engineering design flaw allows mice to easily access inside of the vehicle through air system. When mice are present while driving this creates a driving distraction that can lead to an accident or death. Toyota Corp refuses to acknowledge the problem, but the dealership does field complaints but will not act because Toyota refuses to acknowledge the problem an order a bulletin. I have photos and solution to issue, however several others may be unaware of the issue a simple google search will result in additional findings. I myself am a victim of the design flaw and nearly resulted in a car accident. Without being dramatic- this is truly a issue that needs to be reviewed seriously. I cant provide more details if needed. I'm not looking to gain money, media attention or anything else other than there is truly an issue and I want others to be safe. Its heartbreaking to look in the rear view mirror to see a 15 month old baby screaming because a mouse is running across her body and another mouse is running across the back seat and then the floor board under your feet while trying to pull over with no road shoulder.

- Yelm, WA, USA

problem #4

May 272016


  • 58,100 miles
I was driving on a highway in the country, go about the speed limit of 55 when I heard a very loud sound like an explosion or gunshot. I had the cover to the sunroof open and when I looked up I could see that the sunroof was shattered, crackled everywhere, but intact. When I pulled over to look at it from the outside, I could not see any debris from anything that would have hit it.. instead it appears to bow from underneath and the sides have linear cracks all around. I was not close to another vehicle when it happened either, so I do not see that it could have been caused from anything externally. This could have caused me to be distracted to cause an accident or injury if the glass had entirely fallen through to the inside.

- Versailles, IN, USA

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problem #3

Aug 232015


  • 29,000 miles
Left car running the night before. Didn't know it. Locked car that evening. Battery dead next day. Shouldn't there have been a warning when I locked car, that car was not off?

- Santa Barbara, CA, USA

problem #2

Dec 082013

Prius 4-cyl

  • 19,000 miles
On two separate occasions in December of 2013, with two different drivers, the brakes on our 2011 model year Prius (purchased new in February 2012), failed to engage. The first time occurred when I was driving (with one of my teenagers in the car with me), and the second time occurred when my wife was driving the car alone. In both instance we pressed the brake pedal, but the brakes failed to respond at all. Although it is winter, the roads were clear, and the car did not slow down at all when the brakes were pressed / applied. Interestingly, after 30 - 60 seconds, the brake function restored itself. Since December the car has been at the shop at the Toyota dealership where we purchased the car. The shop has been unable to identify the source of the problem. Additionally, the shop indicated they contacted Toyota mechanics and service support staff to help identify and fix the problem, but Toyota claimed they never heard of such a problem or anything like it. Moreover, Toyota refuses to make any repairs or change any parts (even though the car is still under warranty). Yet, this past Wednesday (February 12, 2014), Toyota announced a recall on rav4's and other models for a software problem that causes the anti-brakes to intermittently turn off. This is particularly troubling, given Toyota's claim that they never heard of anything like this and did not know what to fix. Further, Toyota announced a recall on the Prius itself, for a software problem that might cause the car to turn off completely while driving. Clearly, Toyota has a problem with its software in a number of vehicles. At this point, all I have received is corporate double talk, and I urge the NHTSA to pursue this matter as vigorously as possible.

- Chicago, IL, USA

problem #1

Mar 012011


  • miles
Rear visibility seriously hampered because no camera installed in vehicle. Toyota motor car company knows from experience the serious safety & financial consequences of not addressing a safety issue & a camera providing the driver rear visibility could dramatically save the life of person(child) at rear of vehicle. It is to be noted Toyota installed camera in the Prius only when navigation sys. Is purchased.

- Gainesville, FL, USA

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