Update, August 18, 2026: v14.2.2 is one build in a fast stack. Tesla pushed v14.2.2.1 the next calendar day. Later Tesery notes cover v14.2.2.5 and v14.3.x. Do not paste December 22–23 tester praise onto those later numbers.
In late December 2025 Tesla started sending Full Self-Driving (Supervised) v14.2.2 (firmware around 2025.45.5). Tracker posts put the rollout on December 22. The original Tesery headline called the reaction “widespread acclaim.” What we actually have is a cluster of longtime testers saying lane changes felt more committed — less abort-and-retry — plus smoother parking and night canyon runs. That is owner diary, not a Tesla crash study.
Longtime tester Zack (@BLKMDL3) posted after about 10 hours: “Zero lane change hesitation at all… no stuttering.” He also logged Mad Max / Hurry speed profiles, parking-garage ticket-booth distance, dark canyon roads, and one “red hands” moment the car recovered before he took over. Those caveats belong next to the praise.
Key facts
- Build: FSD (Supervised) v14.2.2, rolling out about December 22, 2025.
- What testers emphasized: Faster commit on lane changes; less mid-maneuver abort.
- Who: Zack and other regular FSD posters. Not a Tesla blog, not NHTSA.
- Next build: v14.2.2.1 (2025.45.6) about December 23 — Tesery’s point-release note.
- What it is not: Unsupervised FSD, or proof every owner will see “zero hesitation.”
10 hours into Tesla FSD v14.2.2: Zero lane change hesitation at all. Extremely refined, excellent lane choices and some parking improvements. Really stoked about the lane changes on this build.
— Zack (@BLKMDL3) December 23, 2025
How to read “human-like”
Hesitation on a merge is a real complaint on earlier v14.2 builds. Testers saying this build commits faster is useful. “Buttery” and “perfection” are feelings. Zack still noted a slow creep and a brief red-hands event. Out-of-Spec and others praised highway lane changes the same week and complained about nags on nearby builds. Mix the logs; don’t write a victory lap.
NVIDIA’s Jim Fan the same week called v14 a “Physical Turing Test” commute. Tesery’s Fan note is that metaphor. This article is version-specific tester notes. Keep them separate from Robotaxi empty-seat videos.
FAQ
Is v14.2.2 still current?
No. Check the car. Point releases and v14.3.x followed.
Did Tesla publish official “zero hesitation” stats?
No. The claims in this story are tester posts.
Does this make FSD unsupervised?
No. The driver stays responsible.
For owners: if you are still on v14.2.2, these notes describe that week’s testers. Your roads and hardware (HW3 vs AI4) will not match theirs one-for-one.
Featured photo: a 2025 Tesla Model Y (file photo of the vehicle type testers used). Image via Wikimedia Commons.
Related: v14.2.2.1, one day later · v14.2.2.5 later analysis · Jim Fan on v14 · Xpeng CEO on v14.2
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