Engine control module (ecu/ecm): software
Risk. A loss of drive power increases the risk of a crash.
NHTSA has logged 24 owner complaints about the 2022 Toyota Prius, most often about the electrical system. It is covered by 1 safety recall, and for recall 21V-734 the manufacturer reports only 96% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through July 9, 2026. Updated daily. Photo: Alex Neman, CC BY-SA 4.0.
24 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Electrical system | 6 | 1 |
| Service brakes | 4 | 2 |
| Air bags | 3 | 3 |
| Visibility/wiper | 2 | 0 |
| Engine | 2 | 0 |
| Power train | 1 | 0 |
| Seat belts | 1 | 0 |
| Interior lighting | 1 | 0 |
| Service brakes, hydraulic | 1 | 0 |
| 5 other systems | 5 | 2 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. A loss of drive power increases the risk of a crash.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Toyota.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Prius median. How we score
2022 Toyota PRIUS 5 HB AWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.


Federal investigations that included the 2022 Toyota Prius, and the recalls they led to.
Recent electrical system complaints filed with NHTSA, shortened. Personal details are removed.
Odometer Fraud. The contact purchased a 2022 Toyota Prius. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 29,909. At the time of the registration, it was discovered that the mileage was 173,000.
The contact owns a 2022 Toyota Prius. While attempting to start the vehicle using the Push to Start feature, the vehicle made a loud screeching sound. The contact drove the vehicle to a dealer, where the failure was diagnosed as a failure with the Data Control Unit (DCU). The vehicle had not been…
The contact owns a 2022 Toyota Prius. The contact purchased the vehicle from a private seller online. The contact stated that the sales advertisement indicated that the odometer mileage was 63,000. The contact stated that when he went to the local Department of Motor Vehicles to register the…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.