2021 Peugeot 508 1.2L Petrol · GD21 FVB

The latest DVSA MOT test for the 2021 Peugeot 508 recorded a failure on 2026-04-10, with two critical failures under the 1.1.14 (a) (ii) and 1.1.13 (a) (ii) categories: the offside rear brake disc was deemed seriously weakened, and the offside rear brake pads were reduced to less than 1.5 mm of effective friction material, posing a safety risk. This failure contrasts sharply with the clean PASSED results from the previous two MOTs in April 2025 and April 2026, indicating a sudden and concerning deterioration in brake system integrity. The presence of advisories from prior tests—such as worn rear brake discs and thinning front brake pads—suggests a pattern of progressive brake wear, which, if left unaddressed, could escalate into further failures or compromise braking performance. The vehicle’s maintenance history thus appears to be unstable, with a notable regression in condition between tests, warranting immediate attention to prevent a repeat failure or a more severe incident. The recorded mileage of 59,948 miles for a 2021 model represents a moderate annual usage rate of approximately 11,990 miles, which is within the typical range for a vehicle of this age and class, though not exceptionally high. Lower mileage could reflect periods of inactivity, such as storage or reduced demand, while higher mileage might suggest more aggressive or varied driving conditions, which can accelerate wear on components like brakes, suspension, and drivetrain elements. Given the vehicle’s age and the brake-related failures noted in the MOT history, the mileage alone does not fully explain the sudden brake system degradation, but it does underscore the importance of monitoring consumables and high-wear items more closely. The combination of moderate mileage and recurring brake advisories implies that the vehicle may have been subjected to conditions that hastened wear, such as frequent stops, hilly terrain, or heavy loads. To proceed with a purchase, the prospective buyer should conduct a thorough physical inspection and test drive to confirm the severity of the brake system issues and identify any related mechanical concerns. Focus first on the braking system: visually inspect the offside rear brake discs for signs of warping, cracking, or excessive glazing beyond what was noted in the MOT, and listen for unusual noises such as grinding or squeaking during braking, especially when applying firm pressure. Check the offside rear brake pads for consistent thickness and ensure they are not binding or seized. The test drive should include a slow, controlled stop from moderate speed to assess braking performance, noting any reduced effectiveness, vibration, or pull to one side. Additionally, inspect the rear brake discs for corrosion or pitting that may have progressed beyond the MOT’s assessment, as corrosion can weaken the discs further and lead to premature failure. If the brake system is deemed unsafe, the buyer should insist on immediate replacement of the offside rear brake discs and pads, with the offside front pads also being addressed given their prior advisory status. Beyond the brakes, the buyer should perform a comprehensive inspection of the vehicle’s suspension, exhaust system, and general roadworthiness to mitigate risks associated with the MOT failures. Examine the rear suspension for signs of wear or damage, particularly around the offside side, where the rear brake disc failure may have been influenced by misalignment or excessive heat. Check for excessive play or clunking noises when driving over bumps, which could indicate worn suspension bushes, broken coil springs, or damaged struts. The test drive should also include acceleration and cornering to detect any binding calipers, uneven tyre wear, or suspension sagging, as these can exacerbate brake system issues. For the exhaust system, listen for unusual noises or leaks, and visually inspect for corrosion or structural damage, as emissions-related advisories or failures could be linked to the vehicle’s age and usage. Finally, verify that all fluids—brake fluid, coolant, and engine oil—are at appropriate levels and free from contamination, as standing vehicles can lead to fluid degradation over time, particularly in the brake system where moisture absorption is a concern. Given the vehicle’s age and the brake failures, it is prudent to schedule a professional inspection within the next 1000 miles or 10 days to address the critical issues before they compromise safety further. Additionally, the buyer should request service records to confirm that routine maintenance, such as tyre rotations, fluid top-ups, and brake pad replacements, has been conducted as recommended in the manufacturer’s handbook.