2021 Peugeot 508 Allure ED SW S/S Phev A 1.6L Hybrid electric (clean) · YE21 ABO

This 2021 Peugeot 508 Allure SW PHEV plug-in hybrid presents an unusually clean MOT history for its age, with three consecutive passes recorded and no advisories or failures logged across the documented tests. The most recent assessment on 2 June 2026 returned a pass with no defects recorded, matching the outcomes from 30 May 2025 and 6 June 2024. While the absence of advisories over three annual tests is notable, it is worth contextualising this against the mileage accumulated in that period: at 81,717 miles, the vehicle has covered substantial distance between tests, and a clean pass on a high-mileage PHEV does not eliminate wear on components such as brake friction material, tyres, and high-voltage ancillary systems, which are not always flagged during routine MOT inspections. The consistency of clean results suggests no acute structural or safety defects have emerged under test conditions to date. The recorded mileage of 81,717 miles over approximately five years equates to an annual accumulation of around 16,343 miles, which is considerably above the typical UK average of 7,000 to 9,000 miles per year. This places the vehicle firmly in higher-use territory, meaning greater wear on consumable components including brake pads and discs, tyres, suspension bushes and linkages, and drivetrain elements. For this particular PHEV variant, the higher mileage is especially relevant to the petrol engine, clutch or e-ATN transmission components, and the cooling systems serving both the combustion engine and the high-voltage battery pack. MOT tests do not assess hybrid battery health or internal combustion engine condition, so the absence of advisories here speaks only to the items within the standard test scope. No testing gaps are evident, with annual checks performed consistently between 2024 and 2026, indicating the vehicle has been in regular active use throughout the recorded period. For a prospective buyer, the priority inspection areas should reflect both the mileage profile and the specific mechanical demands of a PHEV estate. On a test drive, pay close attention to any roughness, misfire, or unusual vibration from the 1.6-litre petrol engine under load, particularly when the system transitions between electric and hybrid modes, as higher mileage PHEVs can develop issues with engine mounts, ignition components, or the hybrid system management that fall outside MOT scope. Listen for knocks or clonks from the front suspension over uneven surfaces, check for uneven tyre wear which can indicate alignment or worn wishbone bushes, and inspect the rear suspension for sagging or noise as these estates are often used for load-carrying. Examine the rear brake discs and pads carefully for wear, as the regenerative braking system on PHEVs often leads to rear brake corrosion and seizure due to infrequent manual application. Additionally, given the high annual mileage, a thorough under-bonnet inspection is warranted even though MOT records show no defects. Check for any signs of oil seepage around the engine and transmission, inspect coolant hoses and expansion vessel condition, and verify the condition of the high-voltage charging cables and connector ports. The underside of the vehicle should be examined on a ramp for exhaust integrity, brake pipe corrosion particularly along the underbody and rear axle area, and any evidence of structural corrosion around wheel arches and suspension mounting points. A plug-in hybrid with this mileage should ideally have documented evidence of regular oil and filter changes at manufacturer-recommended intervals, and a diagnostic scan of the hybrid system would be prudent to confirm battery state of health and absence of stored fault codes, as these factors significantly influence the long-term running costs and reliability outlook for the vehicle.