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EnginePart report

2015 Toyota Prius Engine Problems

Complaints
8about this part
Share
5%of 166 total for the year
Median mileage
10,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the engine of the 2015 Toyota Prius, 5% of the 166 complaints for this model year. Where a mileage was given, the median is 10,000 miles. 3 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.

“Anytime I change elevations the engine seems to rev when it is idling on cruise control. On the downhill, the car will accellerate to ignore the speed on cruisecontrol to dangerous high velocity. I reported this to Toyota of north hollywood three times... It was never addressed.”

NHTSA complaint #11351905, filed 2020-08, 2,000 miles

“While accelerating from a stop, and turning onto a highway to merge into moving traffic, the engine briefly stalled for a few seconds after I had already entered the traffic lane and was attempting to accelerate to traffic speed..”

NHTSA complaint #10862058, filed 2016-04, 10,000 miles

“Pulling out of a parking stall, when put vehicle in drive, the engine revved up and accelerated - vehicle crashed, the brakes did not work- there was skid marks. Floor mats are factory OEM were installed properly. I did not hit the accelerator and I am in good health and mind. I have driving for over 30 years, never had and accident nor a ticket! - A county officer was at the seen and left me with vehicle that had to be towed away. The Vehicle is a total loss. …”

NHTSA complaint #11750516, filed 2026-07

“I was driving from Las Vegas to my home in Los Angeles. An alarming message began flashing on the dashboard telling me to pull over. The vehicle became hard to control. I somehow managed to get it off an exit. I was lucky enough to get it towed to a nearby Toyota dealership where I was told the inverter had failed and that that inverter and associated parts had to be replaced. On my 2015 Prius with only 50,000 miles on it. I SPECIFICALLY asked if there had been a recall on the electrical system of any 2015 Priuses, and they flatly said no. …”

NHTSA complaint #11695550, filed 2025-10

“While attempting to accelerate from a stop light, the Prius stalled. It would not accelerate although the engine revved. I restarted the car by powering completely off and back on. I tried to accelerate again multiple times until it slowly came up to speed the third attempt. The car was in drive and has never happened before. This is a safety concern for multiple reasons but the main being it can cause harm to those in the vehicle as well as other drivers on the road when the car stalls unexpectedly. There were no warning signals on the dash. …”

NHTSA complaint #11428898, filed 2021-08

Related service bulletins

Engine: other model years

YearComplaintsShare of year
202228%
2021233%
202017%
2019620%
201838%
20171213%
20161711%
201585%
2014178%
2013379%
2012317%
2011479%
20101405%
2009194%
2008493%
2007372%
2006252%
2005151%
200491%
200121%

Other parts of the 2015 Toyota Prius

Brakes
93 complaintsElectrical system
27 complaintsOther or unknown
15 complaintsTransmission and drivetrain
13 complaintsExterior lighting
7 complaintsForward collision avoidance
7 complaintsVehicle speed control
7 complaintsAir bags
6 complaintsFuel system
6 complaintsBody and structure
6 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsHybrid propulsion system
3 complaints

← All problems reported for the 2015 Toyota Prius

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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