2020 Mazda CX-30 GT Sport Tech Mhev 4X4 2.0L Petrol · OO08 TAP

A clear and consistent mechanical narrative emerges from this Mazda CX-30's MOT record, centring on the rear suspension dampers. Across three consecutive tests from 2023 to 2025, light oil misting has been flagged on the offside rear shock absorber, and by 2025 the nearside rear unit was also showing similar seepage. The 2024 test produced the only recorded failure, which was entirely unrelated to the suspension; both front headlamp aim readings were set too low and were rectified the same day, allowing the vehicle to pass on a subsequent test that same afternoon. Despite that isolated lighting issue, the rear damper advisories represent a recurring pattern of progressive wear on a matched pair of components, suggesting that replacement of both rear shock absorbers is likely to be required within the next service interval. The 2026 test passed without recording any fresh defects, which indicates that the oil misting has not yet developed into an active leak sufficient to fail, but the underlying deterioration is clearly ongoing. With approximately 35,452 miles accumulated over six years, the vehicle has averaged around 5,900 miles annually, which is substantially below the typical mileage for a car of this age and type. This low annual accumulation means that wear-related items such as brake friction material, clutch components, and general drivetrain wear will be less progressed than the calendar age alone might suggest. However, low-mileage operation combined with standing periods can accelerate certain age-related deterioration, particularly in rubber components, brake discs (which can corrode at the hub interface), and underbody protective coatings. The testing pattern here shows an annual cycle with no multi-year gaps, suggesting the vehicle has remained in continuous use rather than being laid up for extended storage, which mitigates some of the typical low-mileage concerns around seized components and perished seals. For a prospective buyer, the priority inspection area must be the rear suspension, specifically both shock absorbers and their associated mounting bushes. On a test drive, listen for any clonking or knocking noises from the rear axle over uneven surfaces, particularly over speed humps and potholes, as worn damper bushes and failing shock absorbers often generate audible impacts when the suspension reaches the limits of its travel. Check for any vertical bouncing after pressing down firmly on the rear bumper, which should settle within a single oscillation if the dampers remain serviceable; continued bouncing indicates hydraulic fade. Also examine the rear tyres for unusual inner or outer shoulder wear patterns, as compromised damping frequently produces uneven tread wear. Given the headlamp aim failure on the 2024 test, it is worth verifying that both front headlamp units are functioning correctly and that the beam pattern sits at the correct height, as manual levelling mechanisms can drift out of adjustment over time. With the vehicle being a mild-hybrid 4x4, the test drive should also include steady acceleration to confirm there is no hesitation, juddering, or unusual noise from the four-wheel-drive system, and a brief motorway section at sustained speed to monitor for any vibration or warning lights related to the hybrid powertrain. Finally, given the low annual mileage, the brake discs should be physically inspected for surface corrosion and run-out, as lightly used discs are prone to developing a lip or rust-jitter that produces pedal pulsation under braking. Addressing the rear shock absorbers proactively, before they deteriorate into a failure, is the most sensible mechanical investment for the next owner.