2016 Mazda 6 2.2L Diesel · AD62 MCG

The most recent MOT test on 10 February 2026 resulted in a PASS, but only after a prior fail on 6 February 2026 was rectified. The intervening four days saw repairs addressing a dangerous rear brake pad defect, a major offside rear coil spring fracture, and advisories relating to rear brake disc wear and corrosion on both the rear sub-frame and rear suspension arms. While the current pass satisfies statutory roadworthiness requirements, the density of advisories concentrated on the rear axle within a single test cycle suggests localised wear progression rather than a sporadic issue. The maintenance trend appears broadly stable in that the vehicle continues to pass, but the recurrence of corrosion advisories and the emergence of a fractured coil spring indicate that rear suspension and braking components are entering a phase requiring closer scrutiny on subsequent tests. A clean pass in February 2025 provides some reassurance that the deterioration observed in early 2026 developed relatively quickly, which is worth factoring into any purchase decision. With 85,217 miles recorded over approximately ten years, the vehicle has covered roughly 8,500 miles annually, which is broadly typical for a privately owned estate or saloon of this age. The MOT history shows annual tests consistently over the 2023 to 2026 period, indicating regular use rather than long periods of standing. This kind of consistent mileage is generally favourable for mechanical health, as it tends to keep fluids circulated, seals lubricated, and prevents the issues associated with low-mileage or stored vehicles such as brake caliper seizure, dry rot in rubber components, and battery degradation. There are no obvious large gaps in the testing record that would suggest extended inactivity, although the appearance of corrosion-related advisories on structural rear components may still point to age-related material degradation rather than purely mileage-driven wear. The 2026 advisories concerning the rear sub-frame and rear suspension arms corroded but not seriously weakened warrant direct physical inspection prior to purchase. Surface corrosion on the sub-frame and trailing or control arms is consistent with a ten-year-old vehicle exposed to winter road salt, and although it was not deemed seriously weakened at the time of test, such corrosion tends to progress between tests. A prospective buyer should examine these areas on a ramp or over a pit, looking for flaking, deep pitting, or any sections where corrosion has progressed through the metal thickness. During a test drive, listen for any clonks or knocks from the rear axle over speed humps, uneven surfaces, or when reversing, as worn suspension bushes or corroded arm bushings commonly present in this manner. Any vagueness in the rear end's response to steering inputs or a general sense of looseness should be regarded as a negotiating point or a reason for a more thorough inspection. The dangerous rear brake pad defect and the accompanying advisory on rear brake disc wear are particularly relevant given the vehicle's age and mileage. Brake pads on a rear axle typically last considerably longer than those on the front, so pad material worn below 1.5 mm suggests either extended service intervals, binding calipers, or infrequent handbrake use allowing uneven pad wear. The pitted and scored condition of the rear discs indicates they have likely reached their wear limit and will require replacement alongside the pads. On a test drive, any vibration through the brake pedal, shudder under heavy braking, or pulling to one side would suggest caliper issues or uneven pad deposition. Beyond the documented items, age-appropriate checks remain essential. Tyres fitted ten years ago or older may exhibit sidewall cracking or perishing even if the tread depth remains legal, and the historical advisory regarding offside rear tyre edge wear suggests tracking or camber issues may have been present. The brake fluid should have been renewed in line with manufacturer schedules or every two to three years regardless of mileage, and given the ten-year span, replacement is highly likely overdue. The 12V battery in a 2016 Mazda 6 will typically be approaching the end of its effective service life, and verifying its health or budgeting for replacement is sensible. Finally, ensure the service book contains evidence of timely cambelt or timing chain inspections as applicable, along with regular oil and filter changes, as consistent servicing is the best indicator of long-term mechanical reliability in a vehicle of this age and mileage.