FSDRadar
Buyer's guides
Buying a used Tesla with FSD
Since February 2026, Tesla sells FSD (Supervised) in the US by subscription only. The only way left to own it is to buy a car whose first owner paid for it. These guides show you how to check that before you pay.
Start here
A photo of "Full Self-Driving" on a car's screen does not prove the next owner keeps it. A subscription, a trial and an outright purchase can all look alike. Read how to tell if a Tesla has FSD first, then whether it transfers to you.
- How to tell if a used Tesla has FSD, and whether you keep itThe five checks, in order: screen, Tesla app, paperwork, history and hardware.7 min read
- Does FSD transfer to a new owner when a Tesla is sold?Tesla's resale rule quoted, the exceptions, and every transfer window with dates.7 min read
- FSD subscription vs purchased: how to tell them apart on a used TeslaThe signs that separate owned FSD from a subscription or trial, and what each costs you.6 min read
- HW3 vs HW4 (AI4): which computer a used Tesla has, and what it means for FSDHow to check the computer, which cars got which, and what HW3 and AI4 run today.6 min read
- Questions to ask a Tesla seller about FSD, plus a test-drive checklistCopy-paste seller questions, good and bad answers, and a test-drive and handover checklist.6 min read
- How much is FSD worth on a used Tesla?The subscription math, past purchase prices, a published market estimate and a break-even rule.6 min read
- Used Tesla with FSD: where to find one and how to buy it safelyWhere owned-FSD cars come from, search tips for listings, and a step-by-step buying plan.6 min read
- Tesla option codes for FSD, Autopilot and Supercharging, explained$APF2, $APFB, $APF4, $APH4, $SC01, $SC05 and more: what each means for a buyer, from Tesla's own data.6 min read
Every guide quotes Tesla's own support pages and terms where they exist and links to them, and dates anything that changes often. FSD Radar is independent and not affiliated with Tesla, Inc.