2023 Toyota Prius Reliability Report

Body / Liftgate The rear hatch unexpectedly dropped and fell on my head while the vehicle was stationary. The right-side rear hatch gas strut separated from the body at the mounting point. The left-side rear hatch gas strut had also shown signs of imminent failure and subsequently broke near its mounting point. This resulted in loss of hatch support and uncontrolled closure, creating a risk of head and upper-body injury. The failure appears related to structural stress at the strut mounting locations, not misuse. Seat Belt – Rear Center Passenger The rear center passenger seat belt upper cover can be easily pulled off by passengers, which breaks the plastic retaining tab. When the tab breaks, plastic fragments fall into the seat belt mechanism, causing the belt to jam and fail to retract properly. This results in impaired seat belt function, which is a safety concern for rear passengers. The vehicle has not been modified, and the failure occurred during normal use. Vehicle mileage at time of incident was approximately 150,000 miles. The rear center passenger seat belt issue has been present since the vehicle was new. The rear center passenger seat belt mechanism was replaced twice by the dealer during the warranty period, with one replacement performed as a goodwill repair after Toyota Corporate declined coverage. Despite these repairs, the same issue reoccurred, indicating a persistent design-related vulnerability rather than isolated misuse. The issue results in seat belt jamming and failure to retract, which is a safety concern.

The rear plastic where the handle to open the truck is easily damaged and can cause water or damage inside the vehicle.

The contact owns a 2023 Toyota Prius. The contact stated that while sitting in traffic with the brake pedal depressed, the vehicle started rolling backward even though the gear shifter was in drive(D). The contact stated that upon attempting to accelerate, the vehicle failed to respond and continued to roll backward. The contact stated that after turning off and restarting the vehicle, the vehicle responded as needed. There was no warning light illuminated. The vehicle was not diagnosed or repaired by a dealer or an independent mechanic. The manufacturer was not notified of the failure. The failure mileage was unknown.

The 12 volt battery was low, apparently from opening and closing doors during a camping trip. After a few days of sitting unused, I attempted to drive the vehicle. I pushed the start button and the car indicated that it was "ready". When I went to shift the transmission into Drive, the transmission went into Neutral instead and stuck there. At the same time, "low battery" indicators began flashing and the displays started blanking out and flashing. I again attempted to shift into Drive so that I could initiate the gas engine and recharge the battery while driving. However, I could not shift out of neutral and then the car went out of "ready" mode but was still powering accessories. When I attempted to restart the car, it would not let me because it was in neutral. At this time, I tried to shift back into park (push-button) and got an error message that said, Parking Brake Unavailable. So here I am with a vehicle that I need to start to get the battery charged but it won't let me out of Neutral or into Park, which prevents it from starting. Repeated attempts to get the car into Park electronically were not successful and there is not a manual parking brake. The issue is that there was no way to exit the vehicle to get help without risk of it rolling away. And from a technical standpoint, while there was not enough power to shift into park or actuate the parking brake, the vehicle was still powering all non-critical functions like infotainment system, AC, convenience lights, windshield wipers, headlights, parking lights, etc. Some things could be powered down, others could not. It seems to me that, in the absence of a manual parking brake, powering the parking system electronically should have priority over all other systems. In short, I was stuck in the vehicle with my foot on the brake pedal to prevent a rollaway accident. Had I not realized this, I easily could have exited and been run over trying to pop my hood for a jump start. Or rolled over the people downhill.

The car was being driven on US287 south from Wichita Falls, TX toward Fort Worth, Texas on an open road, in the middle of the afternoon, in clear sunshine, no clouds, no rain. On a stretch of the highway where the road dipped down into a gully, and had a normal rise afterwards, the automatic braking system activated, gave a warning of an impending collision and applied the brakes to stop the car HARD. Luckily, there was no traffic ahead or behind the vehicle at the time of the incident. The car came almost to a stop before it realized that there was no danger ahead of the vehicle and the automatic braking system released from the emergency situation at about 5 mph. If there had been cars on the highway following the vehicle, it is doubtful that they would have been able to slow down in time to prevent a rear end collision. The vehicle was slowed down in a maximum breaking action on an open highway, with an open road ahead of the vehicle. The system interpreted a hill ahead of the car as a danger to be avoided.

Driving at highway speed on Interstate 30. Warning lights came on the dashboard. The Prius began to stall. Could not steer vehicle to shoulder. Prius came to a stop in the outside lane of travel. Rear-ended by Tractor Trailer rig. Passenger died. Driver sustained serious injuries. Witnesses called 911 prior to the collision to report that a vehicle had stalled on the interstate with its flashers on.