VinCanary

Reliability report · 2019 Mazda CX-5 · Updated July 2026

The cracked-cylinder-head year — the loudest gen-2 file, and the one where the fire-risk oil leak recurs most.

The 2019 has the largest complaint file of the gen-2 CX-5 years, and it's not diffuse — the recent filings are dominated by cracked cylinder heads. The head cracks behind the exhaust manifold; on the naturally aspirated 2.5 that leaks oil onto the hot exhaust (a fire hazard owners and NHTSA filings describe directly), typically surfacing around 35,000–80,000 miles.

The coverage story is the sting. For the turbo 2.5T, Mazda extended the powertrain warranty for its version of the crack (a coolant leak, program CSP11, to 10 years/120,000 miles). For the non-turbo 2.5, owners repeatedly report the extension only covers coolant leaks — not the oil leak their engine produces — leaving the repair on them. The two recalls are a PCM stall-software fix and the low-pressure fuel pump. This is a Squawking year: excellent to drive, but inspect the engine and confirm which coverage applies before you buy.

Evidence: 260 NHTSA complaints · 2 recall campaigns · 7 mechanic & forum sources

Canary status

Squawking

What that means: 260 federal complaints — the most of any second-generation year — overwhelmingly one pattern: a cracked cylinder head that leaks oil onto the exhaust manifold, a documented fire risk. On the non-turbo 2.5 that leak is not covered by any warranty extension. Two recalls sit alongside. A genuinely good SUV with one specific, expensive thing to inspect for.

CalmChirpingSquawkingFainted

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

260

Federal complaints

2

Recalls

several thousand

Cracked-head repair (owner reports)

Known issues

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

Cracked cylinder head — oil-onto-exhaust fire risk (2.5L non-turbo, uncovered)

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

The signature 2019 failure and the bulk of the file. The cylinder head cracks behind the exhaust manifold; on the naturally aspirated 2.5 it leaks oil onto the hot exhaust, producing a burning smell and a fire hazard, and it recurs well under 100,000 miles. Mazda acknowledged the cracked heads and issued a revised design, but for the non-turbo engine there is no warranty extension — owners report the related program covers only coolant leaks, not the oil leak this engine produces, so out-of-warranty repairs are theirs. Inspect for oil near the exhaust and a burning smell, and get any engine-repair history in writing.

What to check

Pink and cleanServiced. Proceed.

Dark brownDamage underway.

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

Which engine is in the one you found? →

Cracked-head repair (owner reports)

several thousand

Sources: NHTSA complaint database, 2019 Mazda CX-5 · Independent mechanic and owner channel transcripts (CX-5 second generation, incl. diesel)

Turbo 2.5T cracked head — coolant leak, warranty-extended (CSP11)moderate

  • 2.5L SkyActiv-G Turbo (2.5T)

On the turbocharged 2.5T, the same cracked-head problem shows up as a coolant leak at the cylinder head around the exhaust manifold rather than an oil leak. For this version Mazda ran CSP11, a Customer Service Program that extended the limited powertrain warranty to 10 years or 120,000 miles and offered reimbursement. If you're looking at a 2.5T, this is the better-protected side of the same defect — confirm CSP11 is in the history and whether the repair was done.

Sources: NHTSA recalls + manufacturer communications (CSP11/SSPD8 windows, campaign documents) · Independent mechanic and owner channel transcripts (CX-5 second generation, incl. diesel)

$0 (if in window)

CSP11 covered repair

PCM stall-software and low-pressure fuel-pump recallsmoderate

The 2019's two recalls: 19V497 (Mazda 3719F) reprograms the powertrain control module — the PCM, the engine computer — after a software error that can stall the engine; 21V875 (Mazda 5321K) replaces a Denso low-pressure fuel pump whose impeller can crack and cause a stall (CX-5 scope confirmed 2018–2019). Both free. Confirm each is completed by VIN.

Sources: NHTSA recalls + manufacturer communications (CSP11/SSPD8 windows, campaign documents)

$0

Recall remedies

Thermostat P0126 extension (SSPD8); diesel cautionminor

Two smaller notes. The 2019 falls in SSPD8, a warranty extension (to 15 years/150,000 miles) for a check-engine light with code P0126:00 from a fail-safe thermostat stuck open — a cheap, covered fix if the code shows. Separately, 2019 was the only US year Mazda briefly offered the SkyActiv-D diesel; independent reviewers flag its compound-turbo setup as failure-prone (wastegate and turbo failures). The diesel is rare enough that the complaint data can't confirm a US pattern — but if you're specifically looking at a diesel, treat it with extra caution and a specialist inspection.

Sources: NHTSA recalls + manufacturer communications (CSP11/SSPD8 windows, campaign documents) · Independent mechanic and owner channel transcripts (CX-5 second generation, incl. diesel)

Almost every recent 2019 complaint is the same story: a cracked cylinder head, oil onto the exhaust, and — on the non-turbo — no warranty extension to catch it.
7 mechanic & owner sources

Shopping this year?

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Open recalls

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

  1. 19V497PCM software error may cause the engine to stall (2018–2019 CX-5, Mazda6, 2019 Mazda3). Free PCM reprogram. Mazda code 3719F.open
  2. 21V875Denso low-pressure fuel-pump impeller may crack and deform, causing pump failure and stall (CX-5 scope 2018–2019, among multiple Mazda models). Free fuel-pump replacement; letters July 2022. Mazda code 5321K.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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