2012 Mazda 5 2.0L Petrol · X7 KBH

The defining mechanical concern for this 2012 Mazda 5 is a pattern of accumulating brake and underbody corrosion advisories, with the most recent test on 24 September 2025 highlighting wear on both front and rear brake discs, thin rear brake pads, and corrosion affecting the rear subframe and suspension components. A PASS was issued on the same date after an earlier FAILED entry, though the failure details are not separately itemised beyond the shared advisory list, suggesting the car was remedied quickly before being re-tested. Across the four recorded tests, brake-related advisories appear at every inspection since 2022, escalating from a single rear pad advisory in 2023 to combined disc and pad warnings across both axles in 2025. The rear subframe corrosion advisory is a new but serious flag for a 14-year-old vehicle, warranting close physical examination of structural integrity before purchase. With 80,601 miles recorded over 14 years, annual usage averages around 5,757 miles, which is well below the typical mileage for a vehicle of this age and type. This lower-than-average accumulation could reflect genuine light use, but it also raises the possibility of extended standing periods, during which brake discs corrode, subframe and underbody components suffer prolonged exposure to moisture without regular washing, and suspension bushes dry out and crack. The MOT history shows consistent yearly attendance rather than any multi-year gaps, which is reassuring, but the recurring brake and corrosion advisories despite low mileage suggest the car may have spent significant time parked outdoors or driven only on short journeys that prevent components from drying properly. Low annual mileage in this case appears to correlate with the corrosion pattern flagged at the rear rather than with preserved mechanical condition. For a prospective buyer, the rear subframe corrosion advisory is the single most important area to investigate, as subframe integrity is a structural safety item. On inspection, the Mazda 5 should be placed on a ramp so the rear subframe, trailing arms, coil springs, and related suspension pick-up points can be examined for advanced rust, scaling, or perforation. Press each rear suspension component firmly by hand to detect any looseness or play, and listen for clonking or knocking noises over speed bumps and uneven surfaces, which would suggest worn bushes or collapsed spring seats. Pay particular attention to the area around the rear brake calipers, as the thin nearside rear pads and pitted rear discs indicate the braking system is overdue for renewal, and a binding rear caliper on a test drive would manifest as pulling to one side under braking or a wheel that runs hotter than its counterpart. The brake system as a whole demands thorough assessment. On a road test, expect to feel pedal judder or vibration through the steering wheel if the front discs are lipped or distorted, particularly under heavier braking from higher speed. Listen for any grinding or squealing from the rear, which would confirm the thin nearside pads have worn to the backing plate since the 2-3 mm reading in September 2025. Check that the car pulls up straight and that the handbrake holds firmly on an incline, as rear brake condition directly influences handbrake performance. Finally, examine the windscreen closely; multiple entries for discolouration and damage, although classified as minor, suggest replacement may be advisable to restore clear forward visibility and prevent future MOT observations escalating to failures.