2021 Toyota Prius

Routine

Owners filed 6 complaints about this vehicle with federal regulators, most often about the engine. No safety recall has been issued.

What fails
ComponentReportsCrashesFiresInjuries
Wheels1
000
Vehicle Speed Control1
000
Service Brakes1
100
Fuel/Propulsion System1
000
Forward Collision Avoidance › Adaptive Cruise Control1
000
Engine1
000

What owners reported

Newest filings
Fuel/Propulsion System
Filed Feb 23, 2026NC

When i am going down it's charging when the charge reaches 6 from 8 the engine starts working and stop changing at that point and the power continues comes from engine only without the hybrid battery and there are no codes

Vehicle Speed Control
Filed Sep 18, 202456,000 milesIL

The contact owns a 2021 Toyota Prius. The contact stated while driving approximately 35 - 45 MPH, the vehicle independently accelerated. The brake pedal was depressed but failed to stop the vehicle immediately. The contact swerved around the vehicle in front and ended up on the opposite side of the roadway. The contact attempted to avoid oncoming traffic and swerving around all the other vehicles and ended up in a ravine. The contact's husband depressed the START/STOP button from the passenger’s side to turn off the vehicle, enabling the vehicle to come to a stop. The contact restarted the vehicle and continued to drive the vehicle to the dealer at slow speeds. The dealer was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was made aware of the failure by the dealer. The failure mileage was 56,000.

Forward Collision Avoidance › Adaptive Cruise Control
Filed Jul 14, 2023PA

The Lane keeping assist used in radar cruise control mode during some drive cycles will attempt to maintain the vehicle position to the far extreme of the lane and in some cases actively veer out of the lane. My safety ant others can be put at risk when the vehicle behaves outside of its design parameters like this. To solve the issue the vehicle must be pulled over, turned off, then restarted. After the restart it will resume functioning normally, maintaining lane positioning as intended within the limits of the system. The trigger for this is unknown but could be speculated that it is drive cycle dependent and may start during initialization. The problem has not been reproduced by a dealer or service center due to its intermittent nature. There are no warning indicators or lamps on when this occurs.

Service BrakesCrash
Filed Jun 13, 2023PA

The car accelerated without my foot on the accelerator, brake did not respond, and I had to drive through grass and a rock-filled ditch until after about 10 seconds the car returned to my control.

Engine
Filed May 11, 20215,200 milesFL

CARBON MONOXIDE SEEPS INTO THE PASSENGER CAR BUT DILLER CANNOT FIND IT AND DID NOT HAVE TOOLS TO DETECT CO LEVEL IN THE CAR. I CAN'T USE THIS CAR BECAUSE WAS POISONED MANY TIMES AND AFTER A SECOND CHECK-UP, THE LEVEL OF CO BECOMES HIGHER SO I CAN'T DRIVE THE CAR WITHOUT POISONING. PLEASE HELP ME. I AM WORRYING TO SELL MY CAR BECAUSE OTHER DRIVER WILL GET INJURY. THIS IS THE NEW CAR ONLY 7000 MILES.

Wheels
Filed Mar 25, 2021190 milesFL

WHILE DRIVING ON THE I 4 WE HAD A BLOWOUT ON THE REAR PASSENGER TIRE. THE CAR HAD LESS THAN 200 MILES ON IT SO IT WAS BRAND NEW. THE DEALERSHIP FOUND OBJECT IN THE TIRE THAT COULD HAVE CAUSE THE PROBLEM THE ONLY CONCLUSION I COULD COME TO IS THAT THIS TIRE WAS DEFECTIVE. THE DEALERSHIP SAID I COULD HAVE RUN OVER A LARGE OBJECT OR A LARGE POTHOLE, WHICH I DOUBT.

6 of 6 complaints, reproduced as filed.

Across model years

Worst on record: 2010
YearComplaintsRecallsFiresDeathsAssessment
20265100Routine
202516200Routine
202424400Routine
202319401Fatalities reported
202224100Routine
2021 — this page6000Routine
202014000Routine
201930300Routine
201836100Routine
201791320Routine
2016154500Routine
2015165113Fatalities reported
2014207310Above average
2013409330Above average
2012422620Above average
2011518670Above average
20102,82210132Fatalities reported
2009502642Fatalities reported
20081,497467Fatalities reported
20072,003491Fatalities reported
20061,439651Fatalities reported
20051,051641Fatalities reported
2004610620Above average
200399100Routine
2002167245Fatalities reported
2001165330Routine
20004000Routine

Compare every Prius year →

Reading this record

No unusual pattern of severe incidents in the complaint record.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.