2021 Peugeot 308 1.5L Diesel · OU70 CZA

The 2021 Peugeot 308 shows a concerning deterioration in roadworthiness, particularly in the most recent MOT test on 12 May 2026 at 162,083 miles, where two critical failures were recorded. The nearside rear shock absorbers exhibited light oil misting, indicating internal wear that compromises damping efficiency and could escalate into a complete failure, while the offside front outer driveshaft joint boot was severely deteriorated—a serious risk of grease leakage and joint damage. This marks a stark contrast to the previous three tests, all of which passed without defects, suggesting a sudden or prolonged neglect of suspension and drivetrain maintenance. The trend is clearly worsening, with no evidence of prior intervention for these components despite the vehicle’s age and mileage. The mileage record reveals an unusually aggressive usage pattern, with 162,083 miles logged over five years—equivalent to approximately 32,400 miles annually. This is well above the average for a vehicle of this age, particularly when compared to the previous MOT cycle, where the gap between tests (around 28,000 miles per year) was more stable. The most notable jump occurred between the January 2024 test (106,361 miles) and the next in April 2025 (133,602 miles), a 27,241-mile interval in just over a year, which may indicate either intensive use or extended periods of non-service. Such high mileage accelerates wear on suspension bushes, coil springs, and drivetrain components, making proactive inspection essential. A buyer should prioritise a thorough examination of the suspension system, particularly the rear shock absorbers and associated mounts, given the recent oil leakage. The deteriorated driveshaft joint boot demands immediate attention, as fluid loss will accelerate joint degradation and could lead to catastrophic failure. Corrosion around wheel arches, subframe, and sills should also be checked, as high mileage increases the risk of structural weakening. The brakes, while not explicitly failed, warrant inspection for uneven wear or binding calipers, especially given the vehicle’s age and mileage. Finally, the exhaust system and emissions should be scrutinised, as oil leaks from suspension components can contaminate catalytic converters over time. The absence of advisories in earlier tests suggests these issues are recent, but their severity now requires urgent addressing.