While filling my Prius with gas, as soon as I started pumping, it spewed gas all over my arms and shirt, as the gas would not go down the pipe into the gas tank. My mechanic explained that gasline exhaust valve was stuck causing the gas to spirt back out the intake opening. This part had to be replaced. Firestone replaced it for a total of $337.08, however, the dealer would have charged more. It was not covered as a defect issue. The experienced mechanic said that he had seen this problem on several Toyotas. This is hazardous and Toyota should repair those that exhibit this problem; also they should change their design so that the exhaust valve does not fail causing gasoline to spill on the person pumping gas and all down the side of the car onto the cement pavement.

- Centerville, OH, USA

When filling gas, a near-empty Prius overflowed almost immediately, splashing fuel over the car, the ground, tires, and my feet! Gas is flammable and not good to get on one's skin. Firestone experienced/certified repairman said that he's repaired many Toyotas with the same problem. No advanced warning was presented. Last time I filled it before this incident it worked fine. Technician said that the air-exhaust that permits air to escape while gas is being delivered to the tank had failed to work properly, causing the fuel to spew back up the gas line and on to the car/ground. He had to order a part from Toyota and replace it. This cost me $337 for part and labor. I believe this is a malfunction that Toyota should cover. This part should not fail as it could start a fire and contaminate the car, ground and put petroleum on people.

- Centerville, OH, USA

The vehicle was running and stopped at a stop light. When accelerating to proceed from the stop light the vehicle would barely accelerate no matter how far we pressed the gas pedal down. The engine was not revving faster it just appeared to stay in ev mode with very little acceleration. Finally after about 5-10 seconds the car starts accelerating. We are very concerned that if this occurs at a turn onto a busy road we could be in a position where we are stuck in the middle of oncoming cross traffic. This is very intermittent, maybe once or twice per summer (usually in the hotter times of the year). We've had the car at the dealership and both times they have said they found no problem. Searching on the internet this sounds like tsb-0241-17, which I have shared with the dealer but both times they have indicated they see no sign off a problem.

- Chandler, AZ, USA

While I am slowing to a stop, a warning light comes on indicating that I am pressing the brake and the accelerator at the same time. This is not possible. The car does try to move forward but pressure on the brake overcomes that issue. This has happened multiple times (not every time) but fortunately no accidents have occurred. This has also never happened when I am driving at highway speed and need to brake.

- North Potomac, MD, USA

Unable to fill gas tank. Vapor-containment valve engages during refuelling, causing fuel to spill to ground and unable to fill more that one-half gallon of fuel. See also: Https://priuschat.com/threads/interesting-fuel-issue-2016-three-touring-overflowing.173660/ (search for "overflow" - you will see that this is a common problem)

- Stamford, CT, USA

While driving on I-75 there seems to be a spark caused fuel to leak and burn back tire and the tire rolled off the freeway putting all the five passengers into a hazardous situation on the I-75 freeway. We smelled smell of tire and gas leak. Fortunately, we were able to pull off the freeway. It was reported to Toyota and their dealers multiple times. No one even bothered or concerned about the issue or safety of passengers.

- Milton, GA, USA

The vehicle started normally but when I reached about two blocks from my house, the Prius started to act as if the electric motors were not engaging. The engine did not engage either and the gas pedal was unresponsive. The first time this occurred, I was stuck in the middle of a 4-way intersection until I shut down the vehicle and restarted it. After I restarted the Prius, it continued behaving erratically. It sounded and felt like the gas motor had engaged but the electric motor had not. It also felt like the transmission was slipping/not engaging and I had to rev the motor to get the transmission to engage (which it did with a kick like it was being put into gear). This has happened 3 times so far. I had a passenger in the vehicle on the last incident. I have taken the vehicle into the dealership 3 times, but they are unable to find any issues with the vehicle. I reached out to Toyota to see if they could address the issue, but they said that their field tech was unable to find any problem. I am worried that this car will fail in traffic and cause an accident. The incident dates are June 20, July 2 and July 27, 2018. The only indication that something was abnormal on July the 27th. Was a lower mpg reading on my display. Other than that, there was no warning or error codes displayed.

- Rancho Cucamonga, CA, USA

On I-75 @70 miles/hr, with around 800 mileage new Prius, toyo tire of the rear tire popped out and rolled on the I-75 without any warning lights but with some gas smell, putting all the occupants to high risk of crash on the busiest freeway, and the agony of the incident. I towed my Prius to valdosta Toyota, even though Toyota care should cover roadside assistance, they charged me for towing and putting new tire. There was a problem with the Prius gas system or toyo tire of Prius. After around 100 miles I tried to put in gas, Prius tank didn't take gas, went to clear water Toyota and got it repaired, despite explaining Toyota care and less than 1K mileage, they charged me for repair. Contacted Toyota care and my local dealer, they said valdosta and clear water Toyota should not have charged. The dealers say Toyota care need to reimburse the repairs at least, as they can't compensate the agony of losing a tire in the middle of the freeway. Toyota care doesn't even bother to register a complaint and investigate the issue and determine Prius gas system or toyo tire is under fault. Even after going through 3 Toyota dealers and contacting Toyota many times, there is no solution, so a) who investigates the issue? B) how to ensure toyotacare follows their plan? C) how to bring responsibility to Toyota or toyo, their supplier, should be under warranty as part of the car warranty? D) how to ensure the kinds of horrifying incidents do not happen to any other family in future?

- Milton, GA, USA