The current generation Mazda6, known as the GL, shares a striking resemblance with the GJ, with minor aesthetic and equipment differences. Mazda considers the GL different enough to have its own designation.

The close linkage between the GJ and GL suggests that insights from the early GJ model can provide a valuable indication of how the GL will age in the coming years.

GJ models are offered as sedans or wagons, featuring either a petrol or diesel engine that powers the front wheels through a 6-speed automatic transmission.

In Australia, the GJ lineup includes four trim options, and a significant update was introduced in 2015. Detailed technical specifications and a breakdown of trim specs are available below.

What goes wrong with a used Mazda 6 (GJ)?

Exterior:

Owners have frequently complained about the paint scratching easily, particularly noticeable in 2017 and 2018 models with the attractive Crystal Red Metallic colour (GL series).

Some owners reported the front lower lip being prone to scraping on driveways, although owners experienced with lower performance cars haven’t encountered issues with it.

Concerns have been raised about the rearview camera’s low quality, described by some as comparable to a potato, indicating a need for improvement.

Inside:

Numerous owners have expressed dissatisfaction with the i-stop technology, which automatically turns off the car when stopped at traffic lights to save fuel. Complaints include battery management warnings and debates on its impact on battery life.

Trim fabric on door cards in earlier models may come loose, but it’s considered a simple and inexpensive fix.

Some sporadic reports mention issues with Bose amplifiers, resulting in white noise or muffled music. Independent hi-fi or electronics repairers are suggested for cost-effective solutions.

Occasional complaints about frozen screens, primarily on MZD systems, can generally be resolved by restarting the car or performing a software update.

Few owners have mentioned inadequate air conditioning performance, but it appears to be an isolated issue.

Mechanically:

Petrol Models:

Generally, petrol examples are reliable.

Direct injection motors may require walnut blasting or chemical cleaning of inlet tracks over time, a common maintenance procedure.

Sporadic reports of high-pressure fuel pump issues.

Occasional problems related to oil pressure, potentially linked to the strainer, pump, or relief valve.

Rare occurrences of timing chain issues.

Common engine mount problems, causing a loss of dampening fluid and a vibrating sensation throughout the car.

Diesel Models:

Strongly advised to be avoided due to numerous reported issues, including turbo failures, waste gate problems, camshaft failures, and injector seal issues.

Non-genuine parts for exhaust pressure sensors and upgrade kits are available, often at a more affordable price.

Increasing concerns about injector seal and oil pressure problems, including blocked strainers due to carbon from injector seals.

Issues with coked up inlets, shutter valves, and EGR complications.

Common DPF (Diesel Particulate Filter) problems and oil dilution issues in examples not meticulously maintained.

Transmissions:

Earlier models with transmissions made by Jatco had reported issues, but this generation’s transmissions, made by Mazda, are generally considered fault-free.

An occasional Selector position fault can occur inside the car, but it’s a minor issue with an easy fix.

Should you buy a used Mazda 6 (GJ)?

When considering the 2012 to 2016 Mazda6 in the Australian market, avoid the diesel variant. However, when it comes to the petrol models, not only is it recommended to purchase one, but it should also be at the top of your list. In fact, it might be a preferable choice over many SUVs.

According to one owner’s experience, the Mazda6 was likened to a reliable Alfa Romeo with superior build quality and more economical maintenance costs.

In essence, the Mazda6 comes remarkably close to perfection, offering a compelling option for potential buyers. With its ability to satisfy various criteria, it stands out as a compelling choice that ticks numerous boxes.