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2006 Toyota Prius

The Verdict

5 Total Klunk

The 2006 Toyota Prius has 1,438 owner complaints filed with NHTSA. The most reported issues are electrical (1,019 complaints) and brakes (203 complaints). With a Klunk Score of 5/100, it earns a "Total Klunk" rating. If you're shopping for a Toyota Prius, consider the 2021 model year which has 99% fewer complaints.

Safe Bet

The 2021 has 99% fewer complaints

View the 2021 Toyota Prius dashboard →

5

Klunk Score: Total Klunk

Among the most complained-about vehicle years on record. Strongly consider alternatives.

How is this calculated?

The Klunk Score ranks this vehicle year against all others in our database based on total owner complaints filed with NHTSA. 100 = fewest complaints (top tier), 0 = most complained-about. Scores above 60 are better than average; below 40 means more problems than most.

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Under the Hood

Each number is a complaint. Darker = bigger problem.

YearBodyBrakesElectricalEngineTransmission
2001941426325
200211826201712
200364167177
2004657233110933
200516627347310433
200613520310196318
200736231912077934
200824737770911250
2009901931534917
2010351189927822661
2011682561215813
20121283201238625
201369224474612
2014559844287
20153083231310
20161002127247
2017521212214
20181541051
2019109360
202064211
202130030
202275831
2023111501
2024142501
202562511

By Category

Electrical
1019
Brakes
203
Body
135
Engine
63
Transmission
18

By Severity

1
673
2
675
3
4
4
85
5
1

Worst Problems

Complaints

Brakes 4

I was involved in an auto accident on 4/20/2026 @ 6:23 PM. I was driving a 2006 Prius and the vehicle in front of me stopped to make a left turn. I applied my brakes, which grabbed slightly and then released. I then had to hit the brakes hard and they did the same thing again. I ended up rear-ending the vehicle in front of me and had to go to the hospital. I’ve been out of work since the accident, and I feel this was not my fault DUE TO FAULTY BRAKING SYSTEM ON THIS VEHICLE. My vehicle was declared a total loss, by the insurance company After doing my own research I have found many accidents with this type of vehicle that has had rear end accidents with injuries and some fatalities. it also shows not only this 2nd generation with this problem however the 3rd generation Prius as well. I have been out of work since the accident. I'm asking for a complete and thorough investigation into this and a satisfactory resolution to this so that it doesn't happen to anyone else. There were no warning indicators of any kind prior to the accident plus I had paid over 2000 dollars' worth of work and a set of 4 new tires put on this vehicle prior to this incident. Please advise and thank you.

2mo ago
Brakes 2

I am looking to receive a little bit more assistance regarding my daughter's first car that she worked very hard for. It is a 2006 Toyota Prius. It was garage-kept and owned by an older couple who only put 85,000 miles on it. It is really a gem of a car. Soon after we registered the car, my daughter was out driving with her father. While going through a 4-way stop, she found that the brakes had failed and she was unable to stop at the intersection. Luckily, she was with her father, and he was able to give her verbal instruction to guide the both of them to safety. Upon further investigation, we learned that there was a recall on the Brake Actuator Assembly in 2016. Which is the part that has failed and almost caused my 16 year old daughter to crash the car she worked hard for. I contacted the Toyota Brand Engagement Center. It was stated to me that the recall has expired, however, I feel that the fact that a recall was issued means that it was recognized by Toyota that the vehicle was sold with a faulty brake system. This, in and of itself, is a hazard and could be fatal. This should be addressed and the brake system should be replaced as it is no fault to any owner regardless of the recall expiry date. We look forward to your timely response on how we can remedy this very serious safety issue. My daughter was super excited as she worked very hard to save up for her first Toyota and get it registered only to find that the brake system fails.

4mo ago
Electrical 4

The contact owned a 2006 Toyota Prius. The contact stated that while slowly driving into an intersection and turning left at less than 3 MPH, the owner of a Ford F-150 coming from the driver's side of the vehicle at 35 MPH crashed into their driver's side door. The crash caused the vehicle to slide to a complete stop. None of the air bags deployed. The driver of the Ford F-150 stated that the sun created a glare, preventing them from noticing the red light they had driven through. The contact's vehicle was towed and deemed totaled by their insurance. A police report was filed. The contact received a broken rib, rotator cuff, whiplash, and back injuries. Medical attention was needed. The dealer was not informed of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 150,000

9mo ago
Brakes 1

The following describes a near total failure of the brake system that accompanies and is triggered by routine aging of the battery. I believe this applies to multiple model years and editions of the Prius, based on reports by other owners on owners' discussion groups. I believe this should have the highest severity level. Here is what happens: An alarm is sounded, several warning lights ABS, VCS appear, and soon after that, the front brakes stop working. The rear brakes then prove ineffective and lock up. The happens with high frequency under any of the following conditions: (a) as the battery approaches 3yrs age, (b) it is excessively cold outside. (c) there is a higher than typical load on the 12V system from any of a variety of reasons. After installing a fresh new 12V battery, the above happens with much less frequency. There no warning on the dashboard to indicate that the condition of the 12V battery is not safe for operation of the vehicle. It seems clear that the route cause is that the brake control unit is configured within inadequate tolerance for the normal aging of the 12V battery, compounded by the absence of warning on the dash. This probably traces back to a poorly chosen LDO voltage regulator in the design of the brake control unit. Recommendation: Review the electrical designs for the brake control unit, all model years, replace as needed and update the dash board computer to provide warning when the battery condition is not sufficient for safe operation of the vehicle. I further recommend that this be done with all due haste, as the condition is quite dangerous. Qualifications: PhD Chemical Physics and Electrical Engineer

18mo ago
Electrical 2

The light up display for the odometer, fuel gauge, and speedometer does not always light up. When it is not lit, the cruise control and any warning and informative alarms/lights also do not work. This is a well-known issue among owners of these cars, related to the capacitors on the circuit board for the display being defective, and there is extensive documentation of it online. It may also have had a technical service bulletin released for the issue, but I'm not entirely sure. The light goes out intermittently and is not always consistently out. I did mention it to the service personnel when I took it in to get recalls repaired recently, and they didn't seem surprised or unaware of the issue. I did not ask them to diagnose or fix it, as I know I can get it done for a better deal elsewhere.

18mo ago
Electrical 1

The right or left headlight will rabdomly turn off, and tyrn back there 8s no ryme or readon to it,and while driving at night it is cery dangerous, aparebtly its not just this car, this is a common issue and it needs to be fixed

22mo ago
Brakes 1

The actuator failed. The car is no longer safe to drive. This is a known issue. The company refused to fix the issue or recall the car. The warning lights and a loud beep are present if the vehicle is started.

24mo ago
Body 4

The contact owns a 2006 Toyota Prius. The contact stated that while driving approximately 35 MPH, the steering wheel erroneously steered to the left direction on its own. The contact used force to maneuver the vehicle however the steering wheel independently veered again to the left, right, left, and then back to the right. The vehicle crashed into a curb, and violently accelerated across 2 lanes of oncoming traffic where a van crashed into the vehicle head-on. The air bags deployed upon impact. The contact sustained 11 fractured bones (L1 through L5 lower lumbar, pelvic, pelvis, 11th rib, and sacrum) and received medical attention via trauma center where she remained for over 2 weeks. The other driver of the van sustained unknown injuries but did not receive any known medical attention. A police report was not on file for the incident. A dealer was not contacted. The manufacturer was not notified of the failure. The VIN was not available. The failure mileage was 77,000.

24mo ago
Engine 1

One afternoon, in the Summer of 23, I entered my Toyota Prius to run some errands. Once I proceeded to power on the car, none of the dashboard lights illuminated. This included the gas gauge, speedometer & transmission indicator. Fortunately, I was only driving a few blocks down the road from my residence as I live in a small rural town with little congestion, little traffic and mostly two-lane roads. I can't imagine this occurring in a much larger metropolitan city. When I arrived at my destination, I discovered that my Prius wouldn't shut off. This dashboard malfunction was preventing the Toyota from powering off. I quickly completed my errands with my vehicle running during this entire ordeal. Finally, when I returned home, I frantically researched on YouTube regarding this issue and discovered many others who also were having these no-illuminating-dashboard problems. Some YouTubers offered workarounds but the solutions will be temporary as the problem will eventually worsen until the Prius owners have no working dashboard lights. From the way I understand it, this problem is nothing more than a small computer board that's behind the speedometer and this computer board has a small diode that tends to burn out on all kinds of Toyota Priuses when it reaches around 150,000 miles.

27mo ago
Brakes 2

The ABS Sensor on the brakes failed while driving on the highway. This could have caused an accident. These modules should last the lifetime of the car.

30mo ago
Electrical 2

I was Driving down the main road at night time in my 2006 prius and the headlights both went out and all most caused a crash. I pulled over turned my car off then back on and the headlights came back on so i started driving home. After driving a couple blocks i was pulled over by the police because my drivers side headlight was off. Luckily he let me go with a warning, but i work at night and am losing money daily because of this problem. I sent toyota a email and no answer. There has been many electrical problems with this car and the speedometer still says i am deiving 34 to 35 mph while i am actually only going 30mph. I think that toyota should fully fix the problems in thos car. Its amazing there can be so much wrong with a vehicle and they not have to replace the vehicle with a vehicle that works or fix all the problems and give me a loaner vehicle. I will upload a picture of what the toyota dealership nearest to me wanted just to replace 1 bulb ans the balast wires going to the light for one loght they want $211.34 and that is just for the bulb and wire. For there time they said each bulb and wire would be around $500 worth of repair time to pay for them to put the new light and wire in so for one lightbulb with rhe wire would be about $800-$1000 for the dealership to replace the parts, so basically $2000 to replace both light bulbs and the wires and pay the toyota company to put them in. If you look at the estimate it is for 1 bulb and 1wire and that would be the price if i put them in and if i only wanted the parts. So $211.34 then i would have to double it because i would need 2 bulbs and 2 wires. Then i would have to add another $1000. That is $500 for labor for them to put the bulbs in per each bulb and wire and they said its not guaranteed it will fix the problem. So that is $422.68 for parts and they said somewere around $500 for them to install each bulb and wire and after it might not even fix the problem. So that is $2422.68 to maybe fix the problem.

37mo ago
Brakes 1

my 2006 prius has 170000 miles, recently has abs brake actuator making sounds everytime when turn off.

38mo ago
Brakes 1

Brake actuator is not working properly and will eventually get us in an accident. We bought the car brand new. There is a recall for this issue, but we were never notified by Toyota. After contacting Toyota, they claim we are out of the recall dates and will do nothing. I have requested a copy of the letter they should have sent you notifying us of this issue. They cannot provide one. I would like to be able to fix this car; I cannot afford another car or such an expensive repair caused by a defective Toyota part. Please, help us. Thank you.

40mo ago
Transmission 4

The contact owns a 2006 Toyota Prius. The contact stated while she was sitting in the vehicle that was parked in the garage, the vehicle accelerated on its own and proceeded to move forward while the emergency brake was activated, and no warning light illuminated. The vehicle struck the contacts home going inside the home. The contact stated the vehicle was not on, but the vehicle started on its own once the vehicle was pulled from the inside of the home. The contact legs where stuck in between the front side door of the vehicle but did not seek any medical attention. The air bags did not deploy. A police report was filed. The vehicle was not towed. The dealer or the manufacturer was not contacted. The failure mileage was 168,000.

46mo ago
Engine 1

The contact owns a 2006 Toyota Prius. The contact stated while his wife was attempting to stop the engine and turn off the vehicle, the vehicle failed to turn off. There were no warning lights illuminated. The contact's wife was able to drive safely to the residence. The contact disconnected the battery and conducted a personal diagnostic test and the vehicle was operable. The vehicle was not diagnosed by an independent mechanic or dealer. The manufacturer was not notified of the failure. The approximate failure mileage was 265,817.

47mo ago
Electrical 2

Randomly the instrument panel (dashboard) does not turn on with the vehicle.

47mo ago
Brakes 2

The abs actuator is bad. Cant stop nor use the rechargeable braking. Very dangerous.

50mo ago
Brakes 1

Power braking goes out and ringing in car with brakes and abs light on. Have to press extra hard to brake car. Also anther time coming out of a parking lot in reverse and brakes just stopped car as if I had hit something but had not hit anything.

50mo ago
Brakes 1

The contact owns a 2006 Toyota Prius. The contact stated while getting into the vehicle, there was a loud buzzing sound coming from the brakes. The contact stated that the brake, anti-slip regulation, ABS, and vehicle stability control warning lights were illuminated on the instrument panel. The contact stated that the brake was inoperable. The vehicle was taken to an independent mechanic and diagnosed with an accumulator failure. The part was replaced; however, the failure recurred consistently. The manufacturer was not notified of the failure. The approximate failure mileage was 243,000.

51mo ago
Electrical 1

Headlights Malfunctioning. Red triangle light has been present since the week after purchase. 2006 Prius was inspected by Toyota and a private technician. Headlights and 2 Relay fuses have been replaced and is still malfunctioning. This is a safety risk having headlights not working properly can cause accidents on dark roads at night. This should not be at owners expense when it is clearly a manufacturing issue. This causes owners to be ticketed as it is deemed to be a road hazard and it can not pass inspection due to faulty headlights.

52mo ago

1438 total

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