2021 Tesla Model Y — Should You Buy One?
Typical asking price: $28,000–$45,000. There are 2 high-severity known issues you need to know before handing over a check.
Kestrel Take
The best-selling EV in the world for good reason — practical, fast, long range. Build quality is better than earlier Teslas. Battery health and recall status are the two things to check.
What we checked
Partly reconciled against public records, 2026-09-25
NHTSA holds 1,068 owner complaints for the 2021 Tesla Model Y, and 23 recall campaigns.
A big number here usually means a lot of these were sold, not that it is a bad vehicle — popular models collect more complaints for the same rate of trouble. So the total on its own says little. What is worth reading is the shape of it. 54% of them are about one thing — the driver-assist and automatic braking systems. That much concentration is a genuine pattern rather than background noise, and it is the first thing to check on any example you look at.
23 recall campaigns cover this model year. Recalls are repaired free, for any owner, with no time limit on most safety campaigns — but only if someone books it in. Ask the seller to show it was done, or have any dealer check the VIN; it takes them a couple of minutes and costs nothing.
Not written up yet: throttle and cruise control (160 complaints). That group is in the public record and is not covered by the issues below. Treat it as something to ask about, not as absent.
Counts come from the NHTSA complaint and recall database — free, public, and worth checking yourself.
Known Issues for the 2021 Tesla Model Y
Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.
At this mileage, range degradation is the key variable. Get the battery report — expect 85-92% on a well-used 2021.
Repair cost (estimate): $10,000-$18,000 for replacement — about 49% of what this car is typically worth
Source: NHTSA complaints filed under electrics and electronics (145).
The glass roof can develop condensation between layers. Tesla replaces under warranty — verify if covered.
Repair cost (estimate): $0 warranty to $2,000
Source: NHTSA complaints filed under glass, wipers and mirrors (50).
On Autopilot or plain cruise the car suddenly slams the brakes on an open highway — for a shadow, an overpass, or an oncoming truck — hard enough to risk a rear-end hit. NHTSA opened an investigation into 2021–2022 Model 3 and Model Y over this after hundreds of complaints; the camera-only 'Tesla Vision' cars (radar removed from mid-2021 builds) were the worst reported. Software updates have reduced it but not eliminated it; there is nothing to repair, so drive it on cruise with traffic around before buying.
Repair cost: Not yet priced — a safety matter first, a repair bill second
Source: NHTSA complaints filed under the driver-assist and automatic braking systems (1,148).
Walk-Away Red Flags
- ✗Battery below 80% range retention
- ✗Condensation visible in glass roof layers
- ✗Open NHTSA recalls not addressed via OTA
Good Signs
- ✓Long Range dual motor — best range, best buffer as battery ages
- ✓Battery health report above 85%
- ✓All OTA updates current
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Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.
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