Mazda 6 (GL) Problems by Year

The final iteration of the third-generation Mazda 6 (GL), produced from 2018 to 2023, represented the model at its most refined and luxurious. This "second facelift" introduced a completely redesigned interior that brought it closer to premium German rivals, featuring high-quality leather, wood trim, and significantly improved sound insulation. In the UK, it remained a stalwart of the large family car segment, prized by private buyers and long-distance drivers for its elegant styling, tactile driving experience, and the addition of a more powerful 2.5-litre petrol engine to the range. Reliability for the GL-generation is generally better than the earlier GJ models, as Mazda addressed many of the teething issues with the Skyactiv technology. The petrol engines, particularly the 2.0-litre and the smooth 2.5-litre, are exceptionally durable and benefit from simplified maintenance schedules. However, while improved, the 2.2-litre Skyactiv-D diesel still requires close scrutiny; it remains sensitive to short-trip usage and requires high-quality servicing to avoid DPF and carbon buildup issues. Another common area for attention is the Bose sound system amplifier located under the seat, which can fail if water ingress occurs from blocked sunroof or door drains. When buying a used GL Mazda 6 in the UK, the 2.0-litre petrol (165PS) or the 2.5-litre (194PS) automatic are the most recommended choices for a trouble-free experience. Prospective owners should verify that the infotainment system has the latest firmware—supporting Apple CarPlay and Android Auto—and listen for any "knocking" from the rear suspension over bumps, which can indicate worn drop links. Check the condition of the paint and alloy wheels carefully, as they are still the car's most vulnerable cosmetic points. A well-maintained GL model offers a level of prestige and driver engagement that is hard to find elsewhere in the used family car market.

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