2021 Ford Mustang GT — Should You Buy One?
Typical asking price: $24,000–$42,000. There is 1 high-severity known issue you need to know before handing over a check.
Kestrel Take
The S550 Mustang GT with the 5.0L Coyote V8 is a great muscle car — IF the previous owner drove it like a human being. Mustang buyers have a reputation for a reason. Always check for track use.
What we checked
Partly reconciled against public records, 2026-09-11
NHTSA holds 55 owner complaints for the 2021 Ford Mustang GT, and no 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. The largest single group is the fuel system at 27%. That is notable without being overwhelming — worth checking, not worth panicking about.
Not written up yet: the fuel system (15 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 Ford Mustang GT
Ranked by wallet impact. These are documented, recurring problems — not freak accidents.
3rd gear synchro wears early, cold shifting is stiff, clutch wears fast from enthusiastic use. Automatics are more durable.
Repair cost (estimate): $600-$2,500
Source: NHTSA complaints filed under the transmission and drivetrain (9), electrics and electronics (6).
IRS bushings wear from spirited driving and launch control use.
Repair cost (estimate): $400-$1,200
Source: NHTSA complaints filed under the suspension (3).
Walk-Away Red Flags
- ✗Track use history
- ✗Modified exhaust, tune, or forced induction
- ✗MT82 grinding into 3rd or clutch slipping
Good Signs
- ✓Automatic transmission — 10-speed is more durable for a used buy
- ✓Stock powertrain with regular oil changes
Found a specific Ford Mustang GT?
This page covers what goes wrong on the 2021 Ford Mustang GT in general. The Kestrel report covers this specific car— the asking price vs. market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.
Get My Verdict — $7.99No account required. Delivered to your inbox, usually within minutes.
Not ready to pay for one? The free read is instant and needs no card — it checks the asking price against the market and names the top issues for this year. It stops short of the verdict, because that needs the photos.
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.
Other Ford Mustang GT years
More from Ford
Similar cars & sedans
No bullshit, no upsells, no affiliate links. One report, one price — we'll never charge you rent for your own thinking.
Think we got something wrong? Tell us — a real person reads every message.