Buyer Research

2019 Mazda Mazda6 — Should You Buy One?

Typical asking price: $16,000–$24,000. There is 1 high-severity known issue you need to know before handing over a check.

Deciding between model years? Compare the 12 Mazda Mazda6 years we've written up →

Kestrel Take

Six complaints on NHTSA for this year — one each for the engine, the forward radar, the display and the steering — which is too thin to be a reliability rating in either direction; it says few 2019 owners filed, nothing more. What we can say is what carries over: the 2019 uses the same 2.5 engines as the 2018, whose record is dominated by cracked cylinder heads, and Mazda's bulletins on that fault name 2018 through 2021. The one 2019 engine complaint here is an overheat at 35,000 miles. So we inspect the 2019 exactly as we would the 2018 — coolant level, residue at the exhaust side of the head, written confirmation of any extended coverage — and we confirm the one recall, a PCM stall reflash, is closed. Do that and it is a handsome, well-equipped sedan; skip it and you are trusting a short list that means nothing.

What we checked

Checked against public records, 2026-09-25

NHTSA holds 6 owner complaints for the 2019 Mazda Mazda6, and 1 recall campaign.

That is too small a record to read a pattern from, so we are not going to pretend otherwise — with numbers this low one owner moves the percentage by a lot. What has been filed is grouped under the engine (1), the driver-assist and automatic braking systems (1), electrics and electronics (1). Treat those as things to look at, not as the vehicle's known weaknesses. A thin file usually means few of these were sold or few owners filed. It is not evidence the vehicle is trouble-free, and the issues below are our own research rather than a reading of this record.

One recall campaign covers 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.

Counts come from the NHTSA complaint and recall database — free, public, and worth checking yourself.

Known Issues for the 2019 Mazda Mazda6

Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.

PCM software error can stall the engine (recall)High — wallet impact

Recall 19V497 covers 2018–2019 Mazda6s: a fault in the powertrain control module software can shut the engine off while driving. The remedy is a free reflash at any Mazda dealer, about an hour. Every 2019 should have had it by now, but a car that has changed hands or sat on a lot can slip through — the NHTSA VIN lookup tells you in seconds.

Repair cost: $0 with the recall — verify it was performed

Source: 1 NHTSA recall campaign on this model year.

Cylinder head crack and coolant loss — the same 2.5 engines as the 2018Medium

One 2019 complaint: a GT Reserve that overheated at 35,000 miles. On its own that is nothing; against the 2018 page, where 32 owners describe cracked cylinder heads leaking coolant or oil at the exhaust side, it is the same engine family and the same bulletins, which name 2018–2021 cars. Mazda extended coolant-leak-at-head coverage on the 2.5 turbo to 10 years or 120,000 miles for a range of VINs; ask a Mazda dealer, in writing, whether this VIN is in it and what the non-turbo carries. We rate it medium here because the 2019 record does not yet show it recurring; check for it as if it were high.

Repair cost (estimate): $3,000–$6,000 for a cylinder head; $8,000–$12,000 for a replacement engine — around 60% of what this car is typically worth

Source: NHTSA complaints filed under the engine (1).

Front radar fault — Smart City Brake Support slows the car and lights the dashMedium

One owner reports the forward radar sensor faulting on the highway, the car slowing itself, and a flashing check-engine light. On this generation the radar sits behind the front grille badge and is sensitive to a bent bracket, road grime or a minor front-end tap. Look for a misaligned or repainted grille emblem, and make sure the drive includes a stretch of highway with cruise engaged.

Repair cost (estimate): $0–$150 for cleaning or a re-aim; $800–$1,500 for a radar unit and calibration

Source: NHTSA complaints filed under the driver-assist and automatic braking systems (1).

Mazda Connect display blank or frozen at startup, steering wheel buttons deadLow

One report of the center screen coming up black or frozen with the steering-wheel controls unresponsive, then a long lag. On this system that is usually a software version behind or a unit needing a hard reset; a persistent one is a replaced unit. Start the car cold and watch whether the screen comes alive in the first twenty seconds.

Repair cost (estimate): $0–$900

Source: NHTSA complaints filed under electrics and electronics (1).

Walk-Away Red Flags

✗Coolant below the mark in the overflow tank on a cold engine
✗Pink or white crust on the cylinder head near the exhaust manifold
✗Recall 19V497 still open on the NHTSA VIN lookup
✗Grille emblem that sits crooked or looks recently replaced
✗Screen still black a minute after start-up

Good Signs

✓Recall 19V497 shown complete on the VIN lookup
✓A Mazda dealer letter confirming this VIN's extended cylinder-head coverage
✓Coolant at the full mark and a clean, dry exhaust manifold with the engine warm
✓Radar cruise and the collision warning working through a highway stretch
✓Mazda Connect on current firmware, boots within twenty seconds