VinCanary

Reliability report · 2021 Hyundai Tucson · Updated July 2026

The quietest third-gen year — close out the ABS-fire recall and it's a clean pick.

The 2021 Tucson is the final year of the third generation and, by our data, its calmest: 72 federal complaints, down from over 1,600 at the 2016 launch. The engine oil-consumption and bearing concerns are largely behind the model by this point, and the Knock Sensor Detection System coverage and staged engine-warranty extension still apply.

The single open safety recall is the ABS-fire campaign, 20V543 — 2021 is in its original population, fixed free with a fuse and ESC software. With that closed, a 2021 is the most straightforward third-generation Tucson to buy; a mechanic channel still cautions to confirm every recall by VIN before trusting the reputation.

Evidence: 72 NHTSA complaints · 1 recall campaigns · 7 mechanic & forum sources

Canary status

Calm

What that means: 72 federal complaints, the lowest of the third generation. The engine story has largely settled, the bearing coverage still applies, and the only open safety recall is the ABS-fire campaign (20V543). Calm here means no expensive year-specific pattern — verify the recall.

CalmChirpingSquawkingFainted

This status assumes the riskiest common powertrain — see the Tucson engine guide.

72

Federal complaints

1

Recall

$0

Recall 20V543 fuse + ESC software

Known issues

Ranked by the cost of ignoring them. Every claim carries its source.

ABS module corrosion → engine-compartment fire (recall 20V543)

major

2021 is in the original 2019–2021 population of recall 20V543: the anti-lock brake control unit (HECU) can corrode and short, risking an engine-compartment fire parked or driving. The remedy is a free HECU fuse plus an electronic stability control (ESC) software update, with a park-outside advisory until complete. It's the year's only open safety recall — confirm by VIN that it's done.

What to check

Pink and cleanServiced. Proceed.

Dark brownDamage underway.

Recall 20V543 fuse + ESC software

$0

Sources: NHTSA complaint database, 2021 Tucson · NHTSA manufacturer communications (recall 20V543, KSDS Campaign 966, rod-bearing warranty extensions) · Independent mechanic channel transcripts (3rd-gen Tucson)

Connecting-rod-bearing coverage — mostly a formality now, still worth confirmingmoderate

The GDI (Gasoline Direct Injection) engine bearing story is much quieter on the 2021, but the Knock Sensor Detection System (KSDS) software and the staged engine long-block warranty for rod-bearing repair (extended up to a Limited Lifetime Warranty valid for later owners) still apply. Confirm the tier for the VIN with Hyundai, cold-start the car, and check the oil history — cheap insurance even on a calm year.

Sources: NHTSA complaint database, 2021 Tucson · NHTSA manufacturer communications (recall 20V543, KSDS Campaign 966, rod-bearing warranty extensions) · Independent mechanic channel transcripts (3rd-gen Tucson)

$0

KSDS software / bearing inspection

$0 if covered

Long-block under bearing warranty

7-speed dual-clutch behavior (1.6T)minor

The turbo 1.6T's 7-speed dual-clutch transmission (DCT) can still feel hesitant at very low speed. Hyundai's transmission-control-module reflashes address shift quality — ask the dealer whether they were applied and creep in traffic on the test drive. On this low-complaint year it's a drivability check, not a red flag.

Sources: NHTSA complaint database, 2021 Tucson · Independent mechanic channel transcripts (3rd-gen Tucson)

What you no longer worry aboutminor

As the last third-generation year, the 2021 sits past the worst of the launch-era engine flood — its 72-complaint file is a fraction of 2016's. There's no year-specific recall beyond the ABS-fire campaign. The buying task is verifying that one recall and the engine coverage, then treating it as a normal used SUV.

Sources: NHTSA complaint database, 2021 Tucson · NHTSA manufacturer communications (recall 20V543, KSDS Campaign 966, rod-bearing warranty extensions)

This generation looks great on the outside, but reliability-wise, it hasn't lived up to expectations.
7 mechanic & owner sources

Shopping this year?

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Open recalls

Free fixes at any Hyundai dealer. Run the VIN — “completed” isn’t always completed.

  1. 20V543ABS control unit (HECU) corrosion can short and cause an engine-compartment fire; free fuse plus ESC software update on 2019–2021. Park outside until repaired.open

Have a specific one in your sights?

The VIN is on the listing. We’ll check this exact car — build, open recalls, and whether the “completed” repairs stayed fixed.

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