Tesla’s FSD v14.3.10 went out to a small slice of the fleet on September 19, 2026, and the release notes describe a handful of driving refinements rather than a headline new feature.
What actually changed
According to the official release notes tracked by Not a Tesla App, version 2026.27.10 (FSD v14.3.10) improves traffic light handling at complex intersections with compound signals, curved roads, and yellow-light stopping, using training drawn from real fleet driving. It also improves handling of unusual objects that extend or lean into the vehicle’s path, and it changes how the car responds to temporary system degradations — aiming to keep control and recover automatically instead of handing control back to the driver. Tesla also says it tightened the driver monitoring system’s eye-gaze tracking, including handling for eyewear and variable lighting.
Automatic Collision Evasion carries over
The update keeps Automatic Collision Evasion, the feature Tesla introduced in FSD v14.3.9 that lets Full Self-Driving briefly take over steering and braking during manual driving if the system detects an imminent collision AEB alone can’t prevent. As Electrek reported when it launched, this was the first time Tesla let FSD reach into a car being driven manually. It’s a supervised safety assist, not a substitute for paying attention while driving — Tesla’s own framing is that it “activates Full Self-Driving (Supervised) to try to keep your vehicle safe,” not that it guarantees a crash won’t happen.
As of September 19, Tesla’s own rollout tracker showed the update on 32 vehicles, or about 0.3% of the eligible fleet — early days for a point release that will likely reach more cars over the following weeks.
One tester’s early take
YouTuber Dirty Tesla, who tests FSD builds regularly, posted a video on September 19, 2026 going through what he noticed changed in 14.3.10 compared to 14.3.9.
His video reflects one driver’s experience in his own car on his own roads over a short test window — it’s useful for a feel of the update, but for what Tesla actually says changed, the release notes above are the source to trust.
Photo by Elite Power Group.
Tags