I experienced a sudden engine failure while driving my 2015 Toyota Highlander on Interstate 294 outside Chicago. I was driving about 75 mph in the far left lane. A warning message "Check AWD" came on the screen, followed by the Engine icon lighting up, then a "TRAC off" message appeared on the screen. I began to merge to the right across four lanes of traffic to get to the shoulder. As I was doing so, a beep sounded, and the message "Engine Stopping" appeared on the screen. The accelerator stopped working. I reached the shoulder and the car came to a stop just as I made it to the shoulder. The whole incident, from the time the first warning light came on until the car completely stopped, lasted about three minutes. Prior to this, there were no warning lights, and I had been driving the car without incident. The car had received all regular maintenance at proper intervals. Mileage was 86,100 at the time. There were five people in the car, including myself, my teenage daughter, her friend, and her friend's parents. We were driving the girls home from a summer camp. We are unharmed -- and possibly alive -- only because I was able to merge across four lanes of traffic and reach the shoulder before the engine completely failed. Just behind us and just ahead of us on this stretch of interstate, there is no shoulder. Semi trucks populate this very busy road. We had to sit on the shoulder for two hours waiting for a tow truck. We are all truly fortunate to be alive and unharmed. The vehicle is in the possession of [XXX] Toyota, [XXX]. The service department has diagnosed as follows: "Performed diagnostic and found codes P0300, P0301, P0302, P0303, P0306 engine misfire codes. Code P1603 Engine stalls out. P1604 Stability malfunction. Code P1605 Rough idle. Spark plug number 6 is damaged. Check piston with borescope, piston is also damaged." I am being advised to replace the engine at a cost of $8820. Toyota US has been notified. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5

- Elmhurst, IL, USA

The contact owns a 2015 Toyota Highlander. The contact stated while driving approximately 55 mph, the check engine warning light illuminated and the vehicle loss motive power and failed to accelerate as needed. The contact indicated that the vehicle failed to accelerate above 10 mph. The vehicle was taken to Toyota of braintree located at 210 union St, braintree, MA 02184, and diagnosed with a defective engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 80,000. The VIN was not available.

- Braintree, MA, USA

Vehicle is burning excessive amounts of oil.

- Romeoville, IL, USA

For two years now, my vehicle will randomly have an engine stall while operating the vehicle. It happens at different speeds and while going straight ahead or turning. The entire instrument panel and navigation screens shuts off and turns back on. I have taken the car in to Toyota twice and was told they couldn't find anything wrong or get the the vehicle to malfunction again. Today, the engine didn't immediately come back on after stalling, and I had to pull over and turn the car off and back on again. My car has less than 33000 miles on it and has had regular maintenance. This is truly a safety concern at this point and it seems I'm not the only one with this issue according to those reported to the NHTSA.

- Sumter, SC, USA

When driving my Highlander the following error messages appeared, error keeping the start button pressed will cause an emergency stop. I dismissed this. Then it popped up a message that car cannot drive while brake and accelerator are pressed simultaneously. I lost ability to accelerate so tried to pull of busy road, pressing the brake pedal restored acceleration. Then when I stopped in traffic or at lights the car shut itself down and had to be restarted. These error messages kept coming on while I drove to the dealer. I switched off the car at the shop and it wouldnt repeat the problem, no codes have been recorded by the vehicles computer because the check engine light never came on. Toyota and the dealership want to wait until it happens again. Since it happened before, also while it was driving I am uncomfortable as it is a safety concern. I don't want it to happen on a busy highway. I believe the intelligent power module of the car is shorting out and causing the car to go into failsafe mode and shut down creating hazardous driving conditions.

- Winchester, MA, USA

I was driving 80 mph on the interstate when the engine light came on and a "check AWD" display appeared. At that same moment I lost the ability to steer and to accelerate. I managed to get the car off of the interstate. The car came to a stop. I did not see any smoke, or smell anything and the engine temp gauge showed mid cool so I decided to start the car again. When I tried to start the car, the engine light and the "check AWD" display came on again, and then seconds later a temperature light came on with a loud alarm. Smoke started coming out of the front left hood. I shouted for my daughter and her friend to get out of the vehicle. I grabbed my phone and ran to her door to help her and her friend get out. By the time we were running away, flames were coming out of the hood. Within minutes my car was completely engulfed in flames.

- Merritt Island, FL, USA