Tesla FSD v14.3.10 Rolls Out With Automatic Collision Evasion

Tesla began rolling out software update 2026.27.10 on September 19, 2026, delivering two parallel Full Self-Driving (Supervised) branches: FSD v14.3.10 for AI4/HW4 cars and FSD v14.2 Lite for HW3 vehicles. The headline addition is a new safety layer called Automatic Collision Evasion, which can steer, brake, or accelerate on its own to avoid an imminent frontal crash — even when the driver is operating the car manually. Here's exactly what it does, which cars get it, and what owners should do today.

What Changed

How Automatic Collision Evasion Actually Works

Unlike traditional Automatic Emergency Braking, which only slams the brakes when a crash is imminent, Automatic Collision Evasion (ACE) can temporarily activate the full FSD (Supervised) stack to drive around the hazard when braking alone won't be enough. According to release notes compiled by Teslascope and Autopilot Review, the system:

• Operates at speeds below 85 mph (137 kph) whenever FSD is available and enabled but the driver is steering manually.
• Can intervene by steering, braking, or accelerating to avoid an obstacle.
• Also engages if it detects driver inattention or an unintentional FSD disengagement.
• During intervention, the accelerator pedal is muted, and the driver must apply firm steering torque to override the system.

Under the hood, v14.3.10 inherits the improvements Tesla shipped in v14.3.9, including an upgraded Reinforcement Learning stage, a new neural network vision encoder, and a rewritten AI compiler and runtime built on MLIR. Tesla's release materials cite a roughly 20% faster reaction time versus the prior stack — a meaningful margin when the feature's whole job is avoiding a crash a driver is already too late to prevent.

Who Gets What

The 2026.27.10 rollout is split by hardware:

• AI4/HW4 cars (most Model 3/Y/S/X built roughly 2023-onward, and Cybertruck) receive FSD v14.3.10 with Automatic Collision Evasion.
• HW3 cars continue on the v14.2 Lite branch that began rolling out with 2026.27.6 around September 9, 2026. Lite is a distilled version of the HW4 V14 stack — it inherits the Reinforcement Learning improvements and offline models, plus HW3-specific additions like Speed Profiles, Arrival Options, Start Self-Driving from Park, UI refinements, and parking/unparking/reversing capability. Automatic Collision Evasion, however, is not on the HW3 feature list.

If you're on HW3 and hoping ACE arrives later, treat that as unconfirmed. Tesla has explicitly gated the feature to AI4/HW4 in the release notes surfaced so far.

Action Plan: What Owners Should Do This Week

1. Check your update queue. Open the Tesla app or tap Controls → Software in the car. If 2026.27.10 (HW4) or 2026.27.6 (HW3) is available, connect to Wi-Fi and schedule the install overnight. Rollouts of this size typically take 1-3 weeks to reach the full fleet.
2. Confirm your hardware. In the car, go to Controls → Software → Additional Vehicle Information. Look for the FSD computer version. AI4/HW4 will receive the collision evasion feature; HW3 will not.
3. Read the in-car release notes carefully before your first drive after updating. Tesla always documents the override behavior (accelerator muting, firm steering torque required) in the notes — knowing this before the system engages matters more than reading it after.
4. Test in a low-stakes environment first. ACE is designed to activate in emergencies you didn't see coming, but if you drive on FSD (Supervised) daily, take your first few post-update trips on familiar roads. Watch for any changes in how the car handles cut-ins, sudden stops, or lane incursions.
5. Do NOT rely on it. This is a safety net, not a driver-replacement. It functions specifically when you are driving manually and something goes wrong. Standard following distance, attention, and hands-on-wheel discipline still apply.
6. Report anomalies. If ACE engages when it shouldn't — or fails to engage when you'd expect it to — use the voice-command "Bug report" immediately after the event. Tesla timestamps and pulls the relevant clip.

What to Watch Next

Two open questions from this rollout: first, whether Automatic Collision Evasion eventually filters down to HW3 through a future Lite build — Tesla has previously said Lite will continue receiving distilled versions of HW4 improvements, but a safety intervention feature that requires very fast inference may be genuinely gated by compute. Second, how the system behaves in edge cases where an evasive maneuver could create a secondary hazard (oncoming traffic, adjacent lane occupied). Neither the release notes nor Tesla's public statements go into detail there yet, and real-world owner footage over the next few weeks will be the first useful signal.

For now, if you're on HW4, this is one of the more consequential FSD (Supervised) updates of the year — not because it changes what the car does when you're using FSD, but because it changes what the car can do when you're not.

📋 Tracking Tesla software? See every firmware, FSD and app version in one place in our Tesla Software Update Tracker.

This report was curated by the BASENOR Editorial Desk from the sources listed above. Read our editorial standards or email editorial@basenor.com to report an error.