EngineHigh
Skyactiv-D diesel carbon build-up and oil dilution on short journeys
- Typically appears
- 70,000+ miles
- What to inspect
- Check the oil level for rising level and test under load
- Typical repair
- Significant repair · £400–£1,400
Is the 2013–2024 Mazda Mazda6 reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
4.3/ 10
Buy with cautionOn our documented-fault scoring the Mazda Mazda6 rates 4.3 out of 10 · buy with caution. We hold 8 known faults for it and 3 are rated high severity, so the risk is real but contained. The weak points cluster around engine, exhaust and body. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.
Verdict · Walk unless the history is spotless
What the score is built from
- Critical
- 0
- High
- 3
- Medium
- 4
- Low
- 1
Weak points cluster around engine, exhaust, body, suspension.
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ExhaustHigh
DPF blocking on town-used diesels
- Typically appears
- 70,000+ miles
- What to inspect
- Run to temperature and confirm no light returns
- Typical repair
- DPF forced regen or replacement · £250–£1,600
TransmissionHigh
Notchy shifting, crunching, or resistance when selecting second or third gear on manual Skyactiv-MT models.
- Typically appears
- 60,000-90,000 miles
- What to inspect
- With the engine running and clutch fully depressed, shift briskly between first, second, and third gears to feel for synchro resistance, notchiness, or crunching.
- Typical repair
- Clutch & dual-mass flywheel · £700–£1,600
BodyMedium
Rear arch and sill corrosion on earlier cars
- Typically appears
- Age-related
- What to inspect
- Inspect the arches and sills carefully
- Typical repair
- Body & corrosion repair · £250–£1,800
SuspensionMedium
Bush and drop link wear at higher mileage
- Typically appears
- 90,000+ miles
- What to inspect
- Listen over rough tarmac
- Typical repair
- Suspension refresh (per axle) · £250–£1,100
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
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