What is the 2.2 Diesel Carbon Buildup issue on the Mazda 6 (GJ facelift)?

Soot accumulates in the intake manifold and EGR system, causing flat performance, poor economy and repeated regeneration trouble. Symptoms include: Hesitation, Poor fuel economy, Engine light. Estimated repair cost: £300–£600.

What is the MZD Connect Ghost Touching issue on the Mazda 6 (GJ facelift)?

The infotainment screen can register phantom presses or reboot on its own as the digitiser fails. Symptoms include: Menus changing by themselves, Beeping from the screen, Random reboots. Estimated repair cost: £200–£500.

Reliability Guide

Mazda 6 (GJ facelift) Problems by Year

The 2015-refreshed Mazda 6 (GJ) facelift brought a smarter cabin with MZD Connect infotainment and revised styling, but it still shares the same diesel caveats as earlier GJ models. In the UK, it remains a stylish and engaging alternative to the Volkswagen Passat and Ford Mondeo, with sharp handling and a premium-feeling interior that belies its mainstream price. Petrol cars—particularly the 2.0-litre SkyActiv-G—are the genuinely appealing used buy here, offering bulletproof reliability and linear performance without the DPF and oil-dilution risks of the 2.2-litre SkyActiv-D diesel. Insurance groups are competitive for the class, and Mazda's dealer network in the UK is well-established with reasonable servicing costs. The 2015 facelift also introduced improved sound insulation and updated interior materials, making later GJ models a noticeably more refined place to sit on long motorway journeys. For buyers seeking a large family car that is genuinely enjoyable to drive, the petrol-powered Mazda 6 facelift is a quietly excellent choice.

Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.

Year Periods

Known Issues

Serious Faults

Moderate Issues

Select a Year Period

20172 issues 20162 issues 20152 issues

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View MOT history, registration data, and reliability scores for the Mazda Mazda 6 (GJ facelift).

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Buying Tips for the Mazda 6 (GJ facelift)

✓Check MZD Connect for ghost inputs, lag and random reboots—a software update may be needed.
✓A 2.0 petrol is still the safest choice; only buy a 2.2 diesel with meticulous servicing and DPF-friendly use.
✓Inspect 19-inch Sport/Nav wheels for corrosion and pothole damage—diamond-cut finishes are prone to "white worm".
✓Check the condition of the paint—Mazda's "Soul Red" tri-coat is notoriously thin and prone to stone chips.
✓Test the air conditioning system; condenser leaks are a known niggle on some facelift models.
✓Look for evidence of regular oil changes—Mazda's SkyActiv engines benefit from 10,000-mile service intervals.

Check a Mazda 6 (GJ facelift) by Registration