Mazda brand mark

2013–2024 Mazda Mazda6 · common problems & known faults

A handsome saloon and estate with a strong reliability record, favoured by high-mileage private buyers.

Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026

Quick answer

The most commonly reported faults on the 2013–2024 Mazda Mazda6 are Skyactiv-D diesel carbon build-up and oil dilution on short journeys, DPF blocking on town-used diesels and Notchy shifting, crunching, or resistance when selecting second or third gear on manual Skyactiv-MT models. 3 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.

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Reliability snapshot

Based on the documented faults on this page for the Mazda Mazda6.

4.3/ 10
Buy with caution
Critical
0
High
3
Medium
4
Low
1

Guidance only · reflects reported patterns, not a specific car's condition.

Known faults to check

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
ExhaustHigh

DPF blocking on town-used diesels

Typically appears
70,000+ miles
What to inspect
Run to temperature and confirm no light returns

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BodyMedium

Rear arch and sill corrosion on earlier cars

Typically appears
Age-related
What to inspect
Inspect the arches and sills carefully
SuspensionMedium

Bush and drop link wear at higher mileage

Typically appears
90,000+ miles
What to inspect
Listen over rough tarmac
Interior ElectronicsMedium

Infotainment screen delamination and 'ghost touch' erratic inputs without user interaction.

Typically appears
40,000-80,000 miles
What to inspect
Turn on the ignition, leave the car idling in neutral, and watch the screen for unprompted menu changes. Check the screen corners for spiderweb-like delamination under the glass.
Exterior ElectricalLow

Power folding wing mirrors fail to retract or deploy, often accompanied by a continuous grinding noise.

Typically appears
50,000-70,000 miles
What to inspect
Operate the mirror fold button on the driver's door control panel multiple times. Verify both mirrors move smoothly in sync and listen closely for stripped plastic gear noises.
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.
BrakesMedium

Electronic Parking Brake (EPB) rear calipers seizing, causing dragging brakes and premature rear pad and disc wear.

Typically appears
60,000-100,000 miles
What to inspect
Engage and disengage the EPB switch. Listen for the actuator motors on both rear wheels, then ensure the car rolls freely in neutral without rear-axle binding.

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Frequently asked questions

Is the Skyactiv diesel reliable?

On motorway use, yes. On short journeys it suffers from oil dilution and carbon build-up.

What check catches oil dilution?

An oil level above maximum. That is diesel in the sump and it needs addressing.

Estate or saloon?

The Tourer estate sells faster and holds a premium in the UK market.

Are the Skyactiv-G petrol engines a safer bet for forecourt stock?

Yes. The 2.0-litre and 2.5-litre naturally aspirated Skyactiv-G petrols are exceptionally reliable and avoid the DPF and oil dilution issues of the diesels. They use a robust timing chain. Ensure the service history shows regular oil changes every 12,500 miles or 12 months to maintain variable valve timing health.

Does the Skyactiv-Drive automatic gearbox require fluid changes?

Mazda claims the automatic transmission is sealed for life, but UK specialists highly recommend a fluid and filter change every 60,000 miles. Old, degraded fluid causes harsh downshifts and torque converter shudder. Check the dipstick beneath the airbox for dark, burnt-smelling fluid during your appraisal.

What should I look out for regarding the i-ELOOP regenerative braking system?

Models equipped with i-ELOOP use a capacitor to store braking energy. If the specific Q85 or T110 EFB battery fails, replacing it is significantly more expensive than a standard unit. Ensure the dashboard shows no i-ELOOP warnings, as a failed DC-DC converter or capacitor costs over a thousand pounds.

Sources & further reading

Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.

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