2008 Peugeot 4007 2.2L Diesel · KN58 BYD

The most recent MOT, passed on 9 October 2025 at 105,209 miles, shows this Peugeot 4007 remains roadworthy but carries a clear pattern of age-related corrosion and wear that demands careful inspection. The maintenance trend is mixed: the 2025 pass followed a failure the previous day where the tester flagged excessively worn anti-roll bar and suspension arm ball joints, excessively corroded front brake pipes, and severely reduced headlamp output. These were rectified before the pass, yet the same front brake disc pitting and rear sub-frame corrosion reappeared as advisories, indicating surface-level fixes rather than a thorough long-term strategy. The sub-frame corrosion advisory has persisted across multiple tests, a sign the underlying condition is managed rather than resolved. At 105,209 miles across roughly 18 years, this vehicle has covered approximately 5,845 miles annually, well below the UK average. The mileage progression is steady and consistent, with no sudden jumps or suspicious gaps. Between October 2023 at 102,540 miles and October 2024 at 103,869 miles, just 1,329 miles were added. The following year saw only 1,340 miles covered up to the October 2025 test. Such low annual use suggests light, possibly short-journey motoring, which accelerates brake corrosion, brake pipe deterioration, and suspension component wear from repeated cold starts and damp conditions rather than high-mileage fatigue. The recurring fault pattern centres on three areas: braking system corrosion, front suspension wear, and structural rust. Front brake pipes have been flagged as excessively corroded or contaminated with grease in three consecutive tests, and front brake discs consistently show pitting and scoring. Rear sub-frame corrosion has appeared as an advisory in the last two tests, with both subframes noted as corroded in October 2024. Suspension arm ball joints and anti-roll bar linkages have repeatedly required attention, with excessive wear triggering a failure in October 2025. Buyers should inspect the front brake lines closely for fresh replacements, check the sub-frame mounting points for advanced corrosion beyond surface rust, and test the front suspension for play in ball joints and wheel bearings, which have shown recurring slight play. Beyond the MOT flags, the headlamp output issue that caused a failure in October 2025 warrants a check that the lenses are not haze-degraded or that aim is correctly set, as severely reduced intensity often points to aged lenses rather than bulb failure. The offside rear shock absorber oil misting noted in 2023 has not reappeared, but a physical inspection for fresh oil weeping remains prudent. Tyre wear patterns, particularly the nearside front edge wear noted in 2023, suggest possible tracking or suspension geometry issues that may have recurred. Overall, this vehicle has been kept legally compliant but not proactively maintained, and a pre-purchase inspection should focus on whether the corrosion and suspension wear have progressed beyond advisory levels into structural or mechanical risk.