2018 Toyota Prius Prime Other or unknown Problems
- Complaints
- 3about this part
- Share
- 19%of 16 total for the year
- Median mileage
- 22,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the other or unknown of the 2018 Toyota Prius Prime, 19% of the 16 complaints for this model year. Where a mileage was given, the median is 22,500 miles. 1 of these say a crash was involved, according to the filers.
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.
“After starting from a stop after the traffic light turned green, the car in front of me pulled ahead as they accelerated faster than me. When the car in front of me was about 50 yards in front of me, and I had reached about 25 miles per hour the car's collision avoidance system engaged and slammed on the brakes and brought me to a full stop. The car in front of me had not applied their brakes or slowed at all, and there were no visible obstacles. …”
NHTSA complaint #11307431, filed 2020-02, 22,500 miles“There has been at least 4 times that the vehicle was not responsive to acceleration (stalled for a few seconds) then picked back up. Problem has been intermittent. There is no dash indication of an issue. Because concern is intermittent I haven’t taken vehicle in. There is NO CHECK ENGINE light on. My wife experienced it once, I’ve experienced it 3 times. Once going up steep hill, once on a steady incline and the other 2 times at 50 mph on the highway. My layman’s take points to an Inverter issue in the IPM. Intelligent Power Module having a voltage issue that causes vehicle to stall.”
NHTSA complaint #11722132, filed 2026-03“My 2018 Toyota Prius Supreme was parked too far away from the curb in front of a house where we were invited, in a residential area in Naperville IL. I entered the car to park it properly. I had my foot on the brakes and pressed the starting button for the engine to turn on. I then put the car on reverse and suddently the car accelerated uncontollably. Went on the grass, hit the neighbor's mailbox and stopped by crashing on a tree. I was in shock but luckily not injured. Other guests were present and witnessed the incident. Police was called in and issued a report. …”
NHTSA complaint #11553897, filed 2023-11Related service bulletins
- 11028712Jan 7, 2026Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate…
- 10244111Aug 17, 2023TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction…
- 10220154May 13, 2022TT: To improve customer support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center.
Other or unknown: other model years
Other parts of the 2018 Toyota Prius Prime
2 complaintsFuel system
2 complaintsTransmission and drivetrain
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBack-over prevention (rear camera)
1 complaintsBrakes
1 complaintsElectrical system
1 complaintsEngine
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsLatches, locks and linkages
1 complaintsBody and structure
1 complaints
← All problems reported for the 2018 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