Description
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Tesla FSD 14.3.3 (software 2026.14.6.6) is here with the Spring Update, and I tested it on my Model Y Juniper. In this review I break down how Full Self-Driving v14.3.3 actually drives day to day, what the Spring Update changes, and whether the new neural network upgrades make a real difference.
What's new in Tesla FSD V14.3.3:
- Spring Update added to vehicles on FSD v14.3
- Unannounced features or undocumented changes, all listed in the video.
- Actually Smart Summon top speed raised to 8 mph (up from 6 mph)
- New intervention-free streak counter + distance-traveled-without-intervention metric
- Brand-new Self-Driving app: subscriptions, tutorials, and telemetry in one hub
- Upgraded neural network vision encoder for rare and low-visibility scenarios
- Rebuilt AI compiler/runtime (MLIR) for ~20% faster reaction time
- Reduced lane biasing and tailgating, more decisive parking
- Native hands-free "Hey Grok" wake word
Timestamps:
00:00 Intro: I finally got the Spring Update (FSD 14.3.3)
00:53 Official release notes: every Spring Update feature
05:42 Exploring the new menus, pet mode & wider reverse camera
08:45 Undocumented changes not in the release notes (unannounced features or undocumented changes)
14:32 What's still missing (Apple CarPlay rumor)
15:13 Driving on FSD 14.3.3: first impressions
17:08 Eyes-off & phone attention monitoring test
21:04 Walmart parking lot test
21:56 Actually Smart Summon (now 8 mph)
26:29 Asking Grok about the hidden changes
31:24 New Self-Driving app: streaks & total miles
32:38 Better than 14.3.2? + cross-Canada streak
34:25 Level 3 self-driving? SAE levels explained
39:32 Why autonomous driving is so hard
41:42 "Hey Grok, remind me..." new reminders feature
46:30 Grok reminders + live news test
50:02 Final verdict: what FSD still needs to fix
52:28 Outro
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