2021 Toyota Prius Prime Vehicle speed control Problems
- Complaints
- 1about this part
- Share
- 10%of 10 total for the year
- Median mileage
- 34,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the vehicle speed control of the 2021 Toyota Prius Prime, 10% of the 10 complaints for this model year. Where a mileage was given, the median is 34,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2021 Toyota Prius Prime. The contact stated while driving 45–50 MPH and approaching a stop sign, the brake pedal was depressed but the vehicle failed to respond. The driver continued to pump the brake pedal, but the vehicle failed to respond and depressed to the floorboard. The vehicle accelerated, veered across the road, jumped the curb, and stopped. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, and an engineer determined that the brakes were working properly. …”
NHTSA complaint #11604557, filed 2024-07, 34,000 milesRelated service bulletins
- 10244113Aug 17, 2023TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most…
Vehicle speed control: other model years
Other parts of the 2021 Toyota Prius Prime
4 complaintsBrakes
3 complaintsFuel system
2 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsEngine
1 complaintsForward collision avoidance
1 complaintsOther or unknown
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2021 Toyota Prius Prime
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology