Problems · by component

2012 Toyota Prius V power train problems

28 owner complaints to NHTSA about the 2012 Toyota Prius V cite power train, 5% of all 615 complaints for this model year.

Complaints
28
5% of all complaints
Crashes
5
Reported by owners
Fires
0
Reported by owners
Injuries
2
Reported by owners
01 —Owner reports

What owners say about the power train

Verbatim from NHTSA complaints, newest first
“I am writing to bring attention to a critical safety issue affecting the 2012 Toyota Prius and other Toyota models equipped with the brake booster and actuator system. These components are failing at alarming rates, leaving vehicles with no functional brakes, ABS, or traction control. Additionally, this failure compromises the hybrid system due to the regenerative braking no longer working, potentially causing further damage to hybrid components and resulting in repairs costing several thousand dollars. Toyota issued Customer Support Program ZJB, which covered these issues for a limited period. This program was in effect from August 31, 2021, with no mileage or year restrictions, but offered secondary coverage for up to 10 years or 150,000 miles from the vehicle’s first use. Unfortunately, my vehicle, with approximately 130,000 miles and 12 years of age, was denied coverage when brought to a dealer after the program had ended. Despite the brake booster and actuator failing, the dealership did not advise me not to drive the vehicle, further emphasizing the gravity of this oversight. This is a significant safety hazard, as vehicles with these failures lack the…”
Owner complaint to NHTSAFiled Jan 21, 2025Power train, Electrical system, Service brakesODI 11637477
“The contact owns a 2012 Toyota Prius. The contact noticed that there was a significant amount of water on the floorboards from the windshield whenever it rained heavily. Additionally, the contact stated while at a traffic sign on a hill, the vehicle would roll backwards while in drive when she took her foot off the accelerator. The contact did not notice any warning lights. The contact also noticed that while parking the vehicle, whenever the PARK button on the dashboard was not depressed while the vehicle was running, the vehicle would roll forward. The contact took the vehicle to the local dealer, where it was not diagnosed and was not yet repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 80,000.”
Owner complaint to NHTSAFiled Mar 9, 2022Power trainODI 11455849
“Found car tampered with cut in carpet under driver seat to check battery maintenance per Toyota owner manual where hybrid battery was not receiving charge , was running hot Unknown person impersonated me registered my VIN to enroll with Toyota upgraded software app Entune version not with purchase is a 2021 software version with parental like controls, I took to Toyota dealerships below for assistance , new battery and hybrid faulting losing charge, car does not provide hybrid fault notice , loses charge , uses little gas , I researched on side of road to rest throttle and work around as I was driving it could have lost all power and stalled per recall notice needed hybrid software update Ran dr Prius app and finding recalls serviced at Toyota chambers burg pa are coding J0V issue w/inverter not completed and additional engine & battery codes almost causing my car to not enter fail safe mode hybrid battery almost fully discharged as approaching Bay Bridge Service notes from Fitzgerald day there were no issues specific repair request was for diagnostic report of car hybrid battery and sensor check, they claim no issue Only repair was replaced fob key although…”
Owner complaint to NHTSAFiled Aug 2, 2021Steering, Power train, Electrical systemODI 11427529
“I went into Toyota of Fort Walton Beach, FL to remedy a recall (NHTSA Recall Number 18V684). She said that this recall is not on their list and thus would do nothing. I want this recall repaired as presently there is a safety risk. There are phrases in this recall of "1 unrepaired recall" and "Recall incomplete".”
Owner complaint to NHTSAFiled Jun 15, 2021Power trainODI 11421094
“VEHICLE WAS IN MOTION TRAVELING ABOUT 50 MPH WHEN AN EFFORT WAS MADE TO PASS ANOTHER VEHICLE ON A 2 LANE ROAD, THE VEHICLE LOST POWER WHILE WE WERE PASSING, WE BARELY GOT BACK INTO OUR LANE AND JUST BARELY AVOIDED A HEAD ON COLLISION. THEN THE VEHICLE SLOWED TO ABOUT 15 MPH AND LIMPED TO A STOP A MILE LATER. WE COULD HAVE DIED.”
Owner complaint to NHTSAFiled Dec 26, 2019Power trainODI 11291256
“WHEN I WAS MAKING A RIGHT TURN I HEARD A LOUD "BOOM" SOUND AND HAD TO GRAB MY STEERING WHEEL HARD SO I WOULDNT DRIFT ONTO THE OTHER LANE BECAUSE MY CAR WAS SHAKING AND SKIDDING THEN RIGHT AFTER MY CAR EMERGENCY DASH LIGHTS CAME ON AND TOLD ME SYSTEM FAILURE PARK YOUR CAR IMMIDENTLY KEEP IN MIND WHILE THIS WAS HAPPENING MY CAR ONLY WENT UP TO TWENTY MILES PER HOUR WITH MY CAR MAKING A LOUD SOUND AS IF I WAS GOING 80 MPH IT SOUNDED LIKE I WAS SPEEDING WHEN I WAS ONLY GOING ABOUT TWENTY MILES PER HOUR.”
Owner complaint to NHTSAFiled May 1, 2019Power trainODI 11205056

Showing 6 of 28 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.