While operating a 2026 Tesla Model Y on Full Self-Driving (FSD) Supervised, the vehicle's vision-based lane-keeping system failed on an unmarked residential road. At approximately 26 MPH, the vehicle approached a blind crest of a hill. Due to the lack of painted center lines, the FSD software miscalculated the road geometry and drifted significantly into the center/oncoming lane exactly as it reached the top of the hill. This lane departure created an immediate, severe safety hazard, as it placed the vehicle directly in the path of potential oncoming traffic with zero forward visibility over the crest. Due to the critical lane positioning error, immediate driver intervention was required. The driver took manual control of the steering wheel to force the vehicle back into the correct lane, causing the FSD system to instantly disengage. Simultaneously, the driver applied manual braking to reduce speed drastically down to 10 MPH to safely clear a resident working on the right shoulder and stabilize the vehicle. Prior to the failure, there were no warning lamps, error messages, or symptoms indicating the system would fail to maintain proper lane positioning. The system appeared to be functioning normally up until the crest of the hill. The vehicle and its Autopilot/FSD components have not yet been inspected by Tesla, police, or an independent service center following this specific event. The vehicle remains available for inspection upon request

On XXX at approximately 9:30am, my 2026 Tesla Model Y suddenly accelerated without driver input while parking at The Center at [XXX], [XXX]. Vehicle surged forward unexpectedly. I immediately applied brakes. No warning messages appeared before or during the incident. Vehicle struck parking lot curb. Police responded and vehicle was towed. Physical evidence including tire drag marks and vehicle debris remain at scene. Requesting full EDR data log preservation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Tesla recently pushed a software update that introduces a major, unavoidable driver distraction right at the most critical moment of driving: the exact second you take manual control back from Full Self-Driving (FSD).   Whenever you disengage FSD, a mandatory, multiple-choice survey pops up on the center touchscreen asking why you took over. Unlike previous versions where this would disappear after a few seconds, it now stays on the screen permanently. There is no close button, and it does not time out.  This causes two clear safety hazards while driving: 1 It blocks the screen: The popup actively covers up part of the navigation map and basic screen controls. If you are trying to navigate a tricky intersection or see your route right after taking over, you can't see the map clearly because this giant survey is blocking it. 2 It forces you to look away from the road: Because the prompt never goes away on its own, it forces the driver to physically look down, read the small text options, and tap the screen to clear it. Forcing a driver to do a multiple-choice survey while actively managing a manual takeover in traffic is incredibly dangerous. Tesla should not be allowed to use a mandatory, permanent UI popup to collect data while a vehicle is actively moving. It is a severe visual and cognitive distraction at the exact moment a driver needs to be 100% focused on the road. Please investigate this software design and require Tesla to add an automatic timeout or a quick-dismiss button that doesn't require driver interaction.

I purchased a new 2026 Tesla Model Y Standard and took delivery on approximately 30 May 2026. Within the first week of ownership, the vehicle displayed multiple safety-related warnings, including: * Steering Assist Reduced * Power Braking Assist Reduced * Automatic Emergency Braking Unavailable * Lane Departure Avoidance Features Unavailable * Automatic Vehicle Hold Disabled The warnings have occurred more than once. They initially disappeared and then returned on a later drive. Both incidents occurred while the vehicle was operating with Full Self-Driving (FSD) engaged. During the most recent occurrence, while parking at less than 3 mph, the vehicle’s braking assistance appeared reduced and the brake pedal required significantly more effort than normal. As a result, I nearly struck a curb because the vehicle did not slow as expected. The warnings indicated that increased steering and braking effort may be required. Because the vehicle is brand new and these warnings involve steering, braking, and collision-avoidance systems, I believe this creates a significant safety risk. I no longer feel the vehicle is safe to drive until it is inspected and repaired. Tesla has been notified and a service request has been initiated.

While using Full Self-Driving, Tesla hit a parked car when pulling out of a parking spot in a lot.