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FSD v14.3.5

Nearly identical — and it improved with ambulances.

First drive from the Tesla Service Center to home. Aside from profile speed handling — I had to switch profiles myself to avoid a ticket — behavior felt practically the same as v14.3.4. Emergency-vehicle reading improved. The home speed bump still isn't detected, and I still haven't tried the left turn out of the house.

ReleasedJuly 25, 2026
VehicleHW4
Miles84
% on FSD98%

Categories · v14.3.5

Compared to v14.3.4

Decision-making 7.5 =
Maneuver flow 7.5 =
Hesitation (10 = none) 6 =
Speed handling 6.5
Driver confidence 7.5 =
New features 8.3
Release-to-release consistency 7.5 =
Complex maneuvers (merges) 7 =
PR roads (speed bumps, potholes) 7.5 =

Improvements (1)

  • Better emergency-vehicle reading

    Twice an ambulance came head-on in the opposite lane. The car detected it, made a slight move to the right, then corrected almost instantly once it recognized the ambulance was in a different lane, and kept going. In past versions it tended to try to get out of the way; this time it felt better calibrated.

Known issues (4)

  • Profile speed handling

    Apart from this, behavior was nearly identical to v14.3.4. I had to switch profiles manually several times just to slow down around police and avoid a ticket — the car doesn't react to my radar detector.

  • Indecisive lane changes (even in Mad Max)

    Several times, after changing lanes, it got stuck there until the car on the left let it back in — even with the profile set to Mad Max. It doesn't always make the right call to complete a lane change.

  • Home exit speed bump

    As in every previous version, it still doesn't detect the speed bump on the way out of the house. No change here.

  • Left turn out of the house — still untested

    I haven't taken the left turn out of the house yet with this version, but I don't feel confident it'll pull it off. To be confirmed on the next drive.