VinCanary

Reliability report · 2021 Mazda CX-5 · Updated July 2026

The oil-consumption year for the turbo — real, but covered by a class-action warranty extension.

The 2021 CX-5's engine story changes character. The cracked-head complaints fade, and the recurring pattern becomes excessive oil consumption on the 2.5L turbo: owners report burning roughly a quart every 1,000 miles, low-oil warnings well before the next change, and a lifter tick. Timing-cover oil leaks also appear. Our recall check found no confirmed safety recall for the year (see the data note).

The important context: this oil-consumption issue is tied to valve stem seals and was the subject of a class-action settlement. Mazda's program SSPD5 extends the engine powertrain warranty and reimburses limited out-of-pocket oil costs on affected 2.5L turbo cars. So the pattern is real but largely covered — verify SSPD5 applies to the specific car by VIN, and check the oil-consumption and service history. The naturally aspirated 2.5 is the quieter engine here.

Evidence: 137 NHTSA complaints · 0 recall campaigns · 7 mechanic & forum sources

Canary status

Chirping

What that means: 137 federal complaints and no confirmed safety recall for 2021 as of this check. The recurring engine complaint shifts from cracked heads to excessive oil consumption on the 2.5L turbo — burning oil between changes, low-oil lights, lifter tick — but a class-action settlement (SSPD5) extended the powertrain warranty and offers reimbursement. Known, and mostly covered if you verify it.

CalmChirpingSquawkingFainted

This status assumes the riskiest common powertrain — see the CX-5 engine guide.

137

Federal complaints

0

Confirmed recalls

$0 (if qualifying)

SSPD5-covered repair / reimbursement

Known issues

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

Excessive oil consumption — turbo 2.5T (valve stem seals, SSPD5 class-action extension)

moderate
  • 2.5L SkyActiv-G Turbo (2.5T)

The 2021's leading engine complaint, concentrated on the 2.5L turbo: burning oil between changes (owners cite up to a quart per 1,000 miles), low-oil warnings, and an associated lifter tick. The cause was traced to valve stem seals, and a class-action settlement produced Mazda program SSPD5 — a powertrain warranty extension plus reimbursement for limited prior oil-change and top-up costs. Check the oil level and consumption, ask for the service history, and confirm SSPD5 covers the VIN.

What to check

Pink and cleanServiced. Proceed.

Dark brownDamage underway.

This is a 2.5L SkyActiv-G Turbo (2.5T) problem. The 2.5L SkyActiv-G (non-turbo, cylinder deactivation) doesn’t share it.

Which engine is in the one you found? →

SSPD5-covered repair / reimbursement

$0 (if qualifying)

Sources: NHTSA complaint database, 2021 Mazda CX-5 · NHTSA manufacturer communications (SSPD5 class-action / SSPD8 warranty-extension windows)

Timing-cover oil leak and residual cracked-head riskmoderate

  • 2.5L SkyActiv-G (non-turbo, cylinder deactivation)

Separate from oil consumption, some 2021 owners report timing-cover and gasket oil leaks (one describes replacing the timing cover three times), and the earlier cracked-cylinder-head pattern still appears at the tail end on the non-turbo 2.5. Reviewers note Mazda tweaked the exhaust manifold and gaskets around 2021, so the affected share is lower than 2018–2019. Inspect for oil around the timing cover and exhaust and get repair records.

Sources: NHTSA complaint database, 2021 Mazda CX-5 · Independent mechanic and owner channel transcripts (CX-5 second generation)

several hundred to several thousand

Timing-cover reseal (owner reports)

Phantom braking and P0126 thermostat (SSPD8)minor

Two lighter items. A low-frequency phantom-braking pattern continues — the Smart Brake Support activating with nothing ahead — with no recall; test it on the drive. And the 2021 falls in SSPD8, the warranty extension (15 years/150,000 miles) for a P0126:00 fail-safe-thermostat check-engine code, a cheap covered fix if it appears.

Sources: NHTSA complaint database, 2021 Mazda CX-5 · NHTSA manufacturer communications (SSPD5 class-action / SSPD8 warranty-extension windows)

On the 2021 the loud engine complaint is oil consumption on the turbo — and a class-action settlement means there's coverage, if you confirm it applies.
7 mechanic & owner sources

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Safety recalls

A verified zero — not an unchecked one. Here’s what that means.

No NHTSA safety recalls — verified July 11, 2026

Checked against NHTSA’s recall database on July 11, 2026. Any manufacturer Special Coverage programs for this year are listed under the issues above, not here.

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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