general problems of the 2015 Toyota Prius

Seven problems related to engine and engine cooling have been reported for the 2015 Toyota Prius. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Toyota Prius based on all problems reported for the 2015 Prius.

1 Engine And Engine Cooling problem

Failure Date: 03/20/2025

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. I also called Toyota, and they also said there were no recalls involving the electrical system or inverters. The barstow Toyota dealership said it would cost over $5,000 to repair and that they wouldn't have the parts they needed for a week. As it was, I had been stranded in the desert at a hotel for two days. I then had to pay $1,100 to be towed back to la and took it to a hybrid mechanic I trust and paid them to do the work. But this cost me thousands upon thousands. In a month where a friend of mine died (which was the reason I was driving from city to city). To have to replace this on a car with only 50,000 miles is preposterous. To now find out there actually is a recall on the 2015 Prius for the electrical system involving the inverter is so far beyond frustrating, I don't have the correct word for it.

2 Engine And Engine Cooling problem

Failure Date: 10/25/2024

The contact owns a 2015 Toyota Prius. The contact stated that while driving at various speeds, she observed a knocking noise emanating from the engine compartment. The check engine light illuminated. Additionally, the contact stated that while driving on several occasions while driving at speeds under 65 mph, vehicle lost power intermittently. The vehicle was taken to an independent mechanic where it was diagnosed that codes p0300, p0302, p0303, p0304 appeared and unknown parts needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 162,000.

3 Engine And Engine Cooling problem

Failure Date: 08/04/2023

Driving making slight turn car locked up steering wheel, brakes and gas all locked up ran in to a wall. The vehicle just failed with no prior warning.

4 Engine And Engine Cooling problem

Failure Date: 03/22/2023

I want to sale.

5 Engine And Engine Cooling problem

Failure Date: 09/09/2022

The contact owns a 2015 Toyota Prius. The contact stated that after his mother had driven uphill and had pulled into a gas station with him in the front passenger seat, the vehicle began to overheat. The check engine warning light was illuminated. The contact stated that he saw smoke coming out from underneath the hood of the vehicle on the passenger side. Additionally, the exhaust pipe emitted white smoke. The contact's mother shifted into neutral (n) and the vehicle was pushed into a parking spot. The vehicle was towed to the dealer two weeks later. The dealer diagnosed that the water pump had failed, causing the head gasket to blow out. The dealer diagnosed that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 70,464.

6 Engine And Engine Cooling problem

Failure Date: 08/03/2021

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. Toyota dealer looked at it right away, ran diagnostics, and could not find an issue. Nothing was “fixed” or updated.

7 Engine And Engine Cooling problem

Failure Date: 12/24/2015

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.


Other Engine And Engine Cooling related problems of the 2015 Toyota Prius



Prius Service Bulletins
Prius Safety Recalls
Prius Defect Investigations