Vehicle was using the self driving feature of the Subaru Eyesight system. With the system engaged, the vehicle is supposed to accelerate and apply brakes accordingly as to keep a distance from the vehicle in front. Today, that system failed. The vehicle, with the Eyesight system engaged, accelerated right into the vehicle in front. There was no warning. The vehicle will be go for repair on 12/5/23. I have used the Eyesight system since purchasing the vehicle in 2019 with no issues, except for today. Luckily, I was driving at a very low speed but this safety concern can cause catastrophic injuries if it is not fixed.