2018 Toyota Prius

36 complaints on file, page 1 of 2.

1. Filed Aug 17, 2026Failure Jun 1, 202689,100 milesMilton, MAEngine and engine cooling

   The contact owns a 2018 Toyota Prius. The contact stated that while having a routine oil change, the contact was made aware that there was no coolant in the coolant reservoir. No warning lights were illuminated. The contact was constantly adding coolant to the coolant reservoir; however, the following day the coolant reservoir was empty. The failure had occurred on several different occasions. The vehicle was taken back to the residence. The vehicle was not diagnosed or repaired. The contact researched and was made aware of TSB Number: 013519; however, the VIN was not included. The manufacturer was notified of the failure. The failure mileage was approximately 89,100.

   NHTSA complaint 11757394
2. Filed Jun 26, 2026Failure May 6, 2026188,000 milesVan Nuys, CAEngine and engine cooling

   The contact owns a 2018 Toyota Prius. The contact stated that while driving at an undisclosed speed, the engine constantly overheated. An unidentified warning light was flashing on the instrument panel. An independent mechanic inspected the vehicle and became aware that the coolant reservoir was empty. One month later, the same failure reoccurred. A second independent mechanic inspected the vehicle, and the coolant reservoir was empty. The vehicle was taken to a dealer. The dealer diagnosed the vehicle with a coolant leak into the head gasket. The dealer advisor referenced a customer satisfaction program as the cause of the failure; however, the vehicle was over the mileage limit for the program. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 188,000.

   NHTSA complaint 11746813
3. Filed Mar 13, 2026Failure Mar 5, 2026Church Point, LAExterior lighting

   Both taillamps holding moisture. Could cause electrical issues or fire. .. same year and model car have same reported issues and were fixed by manufacturer. This vehicle is the same but different level.

   NHTSA complaint 11724219
4. Filed Aug 26, 2025Failure Dec 31, 1969Cleburne, TXElectrical system

   Driver door lock actuator not working. This seems to be a common problem for Toyota over the last decade, but they yet to put more vehicles to their recall list. Actuator just stopped working. I have to use key out of FOB to manually open. This is a safety issue if I’m trying to get in my car quickly for safety reasons and it does not open.

   NHTSA complaint 11683274
5. Filed Jul 2, 2025Failure Jun 2, 2025160,000 milesOrangeburg, SCLatches/locks/linkages

   The contact owns a 2018 Toyota Prius. The contact stated the trunk opened at a slow speed and failed to remain open. The dealer was contacted and informed of the failure. The dealer informed the contact that the vehicle needed to be taken in to be inspected. The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure and confirmed that the VIN was not covered under recall. The manufacturer directed the contact back to the dealer for assistance. The failure mileage was approximately 160,000.

   NHTSA complaint 11670706
6. Filed Apr 23, 2025Failure Dec 10, 2024Debary, FLExterior

   Was driving around 35 mph and my right side mirror blew up. The back blew off and the mirror was shattered and hanging. Nothing hit it. Contacted Toyota and the parts have been on a stop, but there is no recall. It has been 4 months.

   NHTSA complaint 11656375
7. Filed Mar 26, 2025Failure Feb 3, 202589,682 milesJonestown, PAEngine, Exhaust system

   The contact owns a 2018 Toyota Prius. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed with a failed heat exchanger, catalytic converter, and exhaust system. The contact was informed that the heat exchanger, the catalytic converter, and the exhaust system needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 89,682.

   NHTSA complaint 11650717
8. Filed Dec 5, 2024Failure Oct 31, 202439,000 milesOrange Park, FLAutomatic emergency braking, Service brakes, Abs warning light, Vehicle speed controlCrash

   The contact owns a 2018 Toyota Prius. The contact stated that while in bumper-to-bumper traffic, the vehicle suddenly accelerated. The brake pedal was applied but failed to respond. The driver crashed into the front passenger side of the Lexus. The vehicle continuously moved forward. The contact was eventually able to pull over safely. The pre-collision malfunction warning light illuminated. The brake malfunction light was flashing. The air bags did not deploy. There was no reported fire or injury. A police report was filed. The vehicle was taken to the local dealer, who could not determine the failure. The vehicle was not diagnosed or repaired. The vehicle was then towed to an autobody center where it remained. The manufacturer was contacted, but no additional assistance was provided. The approximate failure mileage was 39,000.

   NHTSA complaint 11629049
9. Filed Mar 2, 2024Failure Feb 13, 2024Huntington, WVAir bags

   The Airbag lights were lit, the person sitting with seatbelt on (flashing) and the person sitting with an inflated airbag in front of them. I ran an OBD2 scan on SRS and got code B1656. Driver seat belt buckle Left Hand. I Investigated the latch and found one wire was snapped off and a couple of inches shorter that the wire that was still connected. I have included 2 pictures of the back end of the seat belt latch. You can see the broken wire and where it use to be connected.

   NHTSA complaint 11575061
10. Filed Oct 31, 2023Failure Sep 28, 2023SAN Antonio, TXSeatsCrash1 injured

    Someone rear-ended my Prius and they were driving a Ford 250 truck pulling a large flatbed truck that had a huge box on it. My seat went forward and backwards - I slammed my knee under the dashboard and then slammed by head into the headrest and I could not reach the pedals after this. I have repeatedly asked the collision center to look at it because there is nothing about it on the report of the estimate of repairs. My adult son was a passenger in the front and his seat didn't move.

    NHTSA complaint 11552860
11. Filed May 12, 2023Failure May 2, 2023Middleton, WIAir bags

    AIRBAG LIGHT ON

    NHTSA complaint 11521644
12. Filed Mar 10, 2023Failure Mar 10, 2023Temple, GAExterior lighting

    The automatic high beams will occasionally fail to operate and are stuck in low beams until about 2 minutes have passed, or until the automatic high beams switch is turned off to disable the system. This seems to be a software issue, as it seems to occur when an approaching vehicle passes by with bright lights. When this happens, all high beams are disabled for a couple of minutes, even if the high beam lever is switched to low beams and back to high.

    NHTSA complaint 11511131
13. Filed Jul 6, 2022Failure Jul 2, 2022Marietta, GAFuel/propulsion system, Power train, Vehicle speed control

    Stopped at red light, then the car didn't accelerate when hitting gas. Engine revs but the car does not accelerate. It happened multiple time when the car was out in sun with full ac on(100f). Happened once in intersection and almost got hit head on

    NHTSA complaint 11472644
14. Filed Jun 22, 2022Failure Jun 21, 2022Merced, CAFuel/propulsion system

    UNKNOWN My car started stalling when it comes to a full stop. I.e. if I stop at a red light or stop sign, and I then press the gas, it stalls. It might inch forward, but it doesn’t really accelerate. This happened last year, and I took it to the dealer. They couldn’t reproduce the results, and they could only suggest changing my small 12V battery. Today, it stalled 8 times, between 2 short drives. Each at a stop sign only travelling ~5 miles total. I have an appointment at the dealer but this is exactly what happened last year with no diagnosis. No check engine light is on or anything.

    NHTSA complaint 11470356
15. Filed Mar 4, 2021Failure Mar 4, 202129,500 milesEL Paso, TXVisibility/wiper

    MY WINDSHIELD HAS CRACKED TWICE WITHOUT BEING STRUCK BY AN OBJECT AND WITHOUT BEING NEAR ANOTHER VEHICLE. BOTH INCIDENTS OCCURRED DURING NORMAL HIGHWAY DRIVING. I WAS NOT SPEEDING OR DRIVING RECKLESSLY. BOTH TIMES REQUIRED THE REPLACEMENT OF THE WINDSHIELD AS THE CRACK QUICKLY SPREAD AND AFFECTED A GOOD PORTION OF THE WINDSHIELD. I AM REQUESTING REIMBURSEMENT FOR THE COST OF REPLACING THE WINDSHIELD (TWICE). THE FIRST INCIDENT OCCURRED JUST A FEW DAYS AFTER PURCHASE. THE SECOND INCIDENT OCCURRED TODAY, MARCH 4, 2021.

    NHTSA complaint 11399109
16. Filed Feb 22, 2021Failure Dec 2, 20206,800 milesClermont, FLBody, Unknown or other

    ON DEC 2, 2020 WHILE DRIVING ON THE FREEWAY AT ABOUT 45-50 MPH OUR SUNROOF EXPLODED CAUSING US TO GET TO THE SIDE OF THE ROAD. THE SHADE WAS CLOSED WHICH SAVED US FROM EXPLODING GLASS. THERE WERE NO ROAD HAZARDS, NO ISSUES OTHER THAN A SPONTANEOUS EXPLODING OF OUR SUNROOF. THE ORLANDO POLICE DEPT WAS SUMMONED AND THE ROADRANGERS STOPPED TO ASSIST US. I TOOK THE CAR DIRECTLY TO THE TOYOTA DEALERSHIP IN CLERMONT, FL AND THEY REPAIRED THE GLASS AT NO CHARGE BUT TOLD ME HAD THE CAR NOT BEEN UNDER MANUFACTURER WARRANTY I WOULD HAVE BEEN RESPONSIBLE FOR THE COST OF REPLACEMENT. IF THE SHADE HAD NOT BEEN CLOSED THE ENTIRE PASSENGERS WITHIN THE CABIN WOULD HAVE BEEN SPLATTERED WITH SHATTERED GLASS.

    NHTSA complaint 11397301
17. Filed May 13, 2020Failure May 7, 202070,000 milesMahopac, NYAir bagsCrash1 injured

    TL* THE CONTACT OWNS A 2018 TOYOTA PRIUS. THE CONTACT STATED THAT WHILE DRIVING ABOUT 65 MPH, ANOTHER VEHICLE PULLED INTO THE HIGHWAY, WITHOUT STOPPING, AND CRASHED INTO THE FRONT DRIVER'S SIDE FENDER OF THE CONTACT'S VEHICLE. THE CONTACT STATED THAT NONE OF THE AIR BAGS DEPLOYED. THERE WAS NO WARNING LIGHTS ILLUMINATED. THE CONTACT SUSTAINED INJURIES THAT REQUIRED MEDICAL ATTENTION, INCLUDING BACK, NECK, ANKLE AND HEAD INJURIES. HE ALSO STATED THAT HE RIPPED THE TENDON ON THE RING FINGER. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOTALED AND WAS TOWED TO A TOW YARD. THE DEALER WAS NOT CALLED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 70,000. *LN*JB

    NHTSA complaint 11324401
18. Filed Jan 2, 2020Failure Jan 2, 202019,100 milesCarlsbad, CAElectrical system

    ERROR CODES P0113 AND P0102 AND WARNING MESSAGES FOR CHECK ENGINE AND ICS MALFUNCTION* LAPPEARED WHEN STARTING THE GARAGED VEHICLE IN APPROXIMATELY 55F ROOM TEMPERATURE. TOYOTA OF ESCONDIDO AND TOYOTA'S CUSTOMER CARE TELEPHONE CENTER EXPLAINED THAT THEY WILL NOT INSPECT (ALTHOUGH UNDER THE 3-YEAR/36,000 MILES WARRANTY) WITHOUT A SERVICE FEE. ONLINE, REPORTS THAT A FAILING 12V BATTERY MAY CAUSE MULTIPLE CODES TO BE TRIGGERED WERE ALSO MET WITH A REQUEST FOR A $110 DIAGNOSTIC FEE. THE BATTERY IS ALSO UNDER THE 3-YEAR/36,000 MILE WARRANTY. ERROR CODES AND MESSAGES IMPLICATE FUEL EFFICIENCY, POLLUTION AND SAFETY ISSUES. *ICS IS THEIR COLLISION SENSOR SYSTEM.

    NHTSA complaint 11296751
19. Filed Dec 10, 2019Failure Nov 30, 201916,000 milesBrookline, MAExterior lighting

    AUTO HIGH BEAM FEATURE INTERMITTENTLY CUTS OUT AND THEN RESUMES, ESPECIALLY FREQUENTLY IN RAINY WEATHER. WHILE OFF, I CANNOT ENGAGE THE HIGH BEAM WITHOUT FIRST SHUTTING OFF THE AHB FEATURE. MANY SIMILAR REPORTS REGARDING TOYOTA VEHICLES; SEE HTTPS://WWW.RAV4WORLD.COM/THREADS/AUTO-HIGH-BEAM-ISSUES.242329/

    NHTSA complaint 11288235
20. Filed Nov 8, 2019Failure Oct 29, 201926,000 milesArvada, COExterior lighting, Visibility/wiper

    THE CAR IS INADEQUATE IN THE WINTER. WHEN IT SNOWS I CAN'T KEEP THE WINDOWS CLEAN. THEY CHANGED THE FITTINGS AND I CAN'T EVEN PUT WINTER BLADES ON THE CAR. ALSO, AND THIS APPLIES TO ALMOST ALL NEW CARS AS WELL, THE LED LIGHTS FREEZE OVER. IT'S A SAFETY HAZARD NOT TO HAVE LIGHTS THAT WORK. AND IT'S A SAFETY HAZARD TO HAVE TO GET OUT OF THE CAR IN DANGEROUS CONDITIONS TO TRY AND SCRAPE ICE OFF THE WINDOWS AND LIGHTS. THE FRONT AND REAR LIGHTS GET CAKED WITH ICE AND SNOW. THIS PICTURE IS OF MY WINDSHIELD AFTER AN HOUR OF WARMING UP. THE WIPERS STAY CAKED WITH ICE. AND WHEN I TURN THEM ON, THIS IS WHAT HAPPENS. THEY SMEAR THE WINDSHIELD WITH ICE. THEY SMEAR IT WITH WATER TOO. I CAN'T SQUEEGEE WATER WITH ICE. I'D LOVE TO TRADE IT IN, BUT EVERYONE HAS LED LIGHTS. THEY'RE A SAFETY HAZARD. AND THESE ISSUES ARE KEEPING ME FROM BUYING A NEW CAR. I WOULD APPRECIATE IT IF YOU ADDRESSED THESE ISSUES. THE CAR COMPANIES WON'T LISTEN TO ME. THANK YOU HAVE A GREAT DAY

    NHTSA complaint 11278866