2021 Mazda CX-30 GT Sport Tech Mhev 2.0L Petrol · KX21 UOC

The vehicle remains roadworthy as of its most recent MOT on 2025-11-05, but the maintenance trend shows a clear deterioration in rear suspension and brake components since 2024. While the 2024 tests were clean, the 2025 inspection flagged light oil misting on both rear shock absorbers and minor wear on both rear brake discs — conditions that, while not yet critical, indicate the start of component fatigue. These are not urgent failures, but they are signs of ongoing wear that should be monitored closely, especially if the vehicle is driven on rough or high-mileage routes. Mileage progression is consistent with a five-year-old vehicle, averaging around 8,700 miles per year, and there are no signs of abnormal accumulation or long periods of inactivity. The jump from 32,946 miles in June 2024 to 36,050 miles in November 2024 reflects a normal annual usage rate, and the 43,680 miles recorded in November 2025 aligns with that pattern. No gaps in testing or suspicious mileage spikes are evident, suggesting the vehicle has been regularly driven and maintained, though the lack of recent inspections before 2024 means there’s no data on intermediate wear. Buyers should inspect the rear suspension bushes and shock absorber mounts for increased play or noise under load, as the light oil misting suggests internal seal degradation that may progress to leakage or failure. The brake discs, while not excessively worn, should be measured for thickness and checked for uneven wear or glazing — especially if the vehicle has been driven in stop-start urban conditions. The nearside rear brake caliper should also be examined for binding or sticking, as this can accelerate pad and disc wear. No structural corrosion or emissions issues were flagged, so the chassis and exhaust integrity appear intact, but a full underbody inspection is still advisable to confirm no hidden rust or damage has developed since the last test. The vehicle’s mechanical condition is currently acceptable for continued use, but the recurring suspension and brake wear signals that a full service and component replacement plan should be budgeted for within the next 12 to 18 months. A buyer should not be deterred by the clean MOTs from 2024, but should treat the 2025 findings as a warning sign of impending maintenance needs — particularly for the rear suspension and braking system — and factor in those costs before purchase.