On Wednesday morning [XXX] at [XXX] I was parking my 2023 Volvo XC Recharge in the parking lot on Stearns Wharf in Santa Barbara where I was meeting my walking group for our regular morning walk on the pier and along the waterfront. While I was slowly finishing pulling into a parking spot, with my foot solidly on the brake, the car suddenly lurched and accelerated. It jumped the parking spot wooden stop and then jumped the orange iron barrier that divides the parking lot from the pier road. It felt as if I were suddenly on a runaway horse. My instincts kicked in as the car bounced fully onto the pier road, and I immediately turned the car so that I would not crash through the other barrier on the ocean side of the pier road and dive into the ocean. I immediately drove the car back into the lot and parked it. The pier is not a standard asphalt/concrete road or lot. It is wooden beams placed one after the other. It is very bumpy and the speed limit is 10 miles per hour, but usually you cannot even drive that fast because it is so rough and bumpy. I was going the slowest you can go just before coming to a full stop in my parking spot, with my foot fully on the brake, when the sudden acceleration occurred. It is a very bumpy and uneven surface and maybe that contributed to a failure in the vehicle monitoring system or automatic braking system. I feel incredibly fortunate that this malfunction did not cause more damage than a blown tire. I am grateful there were no pedestrians or cars in the path of the car and that I was not parked on the ocean side of the parking lot. This could easily have been a fatal and catastrophic incident. My trust in the car to function properly is severely compromised. Volvo kept the car for 2 months while investigating. They said there was no malfunction, but refused to release any report substantiating their conclusion. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)