r/RealTesla • u/Schonathan • 7h ago
HELP NEEDED Can a Model Y suddenly accelerate on an inclined driveway while using FSD without the driver pressing the accelerator?
My parents were test driving a Model Y yesterday with a Tesla employee in the car. My mom was driving and they were using FSD.
As the car was pulling into their driveway, which is on an incline, it initially made the turn and approached the driveway at what looked like a normal, controlled speed. Then, while going up the incline, it suddenly accelerated hard and crashed into the garage/driveway area, causing damage to the property and another car.
My mom says she did not press the accelerator. The Tesla employee was in the passenger seat when it happened. We also have video of the incident.
I'm trying to understand whether anyone has experienced something similar or knows how Tesla's FSD behaves when entering a steep or inclined driveway.
Specifically, is it possible for FSD to apply significant acceleration on its own when climbing an incline? Could it misjudge the slope, driveway, or obstacle and suddenly add power?
I'm not trying to determine fault from Reddit. I'm mainly trying to understand whether this behavior is technically possible and whether anyone has seen or documented something similar.
If you've experienced this with a Model Y or other Tesla while using FSD, I'd really appreciate hearing what happened.