Tesla starts rolling out FSD v14.2 Lite to HW3 Model S and X
Tesla has begun rolling out FSD v14.2 Lite to Hardware 3 (HW3) Model S and Model X vehicles for the first time, via software versions 2026.27.10 and .11 -- reaching a small group of early-access (Wave1) cars. The update compresses the HW4-based FSD v14 to run on HW3, running 30% faster than the prior HW3 build while keeping v14's core driving behavior -- good news for HW3 owners who'd fallen behind on updates.
According to Not a Tesla App and other outlets, Tesla has started rolling out FSD v14.2 Lite to Hardware 3 (HW3)-equipped Model S and Model X vehicles for the first time, via software versions 2026.27.10 and 2026.27.11.
Distribution remains very limited so far -- only a small number of vehicles enrolled in Tesla's early-access (Wave1) tier have received it, and reports so far are limited to redesigned (facelifted) Model S and X units. Legacy models are still waiting.
v14.2 Lite compresses FSD v14, originally built for Hardware 4 (HW4), to run within HW3's more limited compute. Tesla says engineers achieved roughly 30% faster processing than the previous HW3-specific build while preserving v14's core driving logic.
HW3 powers older vehicles built around 2019 and earlier, and there had been concern that its more limited compute would delay access to FSD v14's latest capabilities. This rollout is an early signal against that concern, with additional waves expected in the coming days. For shareholders, extending v14-class FSD to the large HW3 fleet also broadens the base for FSD subscription and purchase revenue.
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