2005 Peugeot 307 1.6L Petrol · YC05 KFX

The defining mechanical story of this Peugeot 307 is a chronic and worsening pattern of outer CV joint gaiter failures, recurring gearbox oil leaks, and deteriorating suspension and brake components that have repeatedly escalated from advisories into major failure items. Over four consecutive test cycles from 2022 to 2025, the nearside and offside front outer drive shaft CV boots have been flagged as split or insecure on every single visit, resulting in major failure entries in 2022, 2023, 2024, and 2025, which indicates an unresolved structural problem rather than an isolated incident. The most recent test on 23 July 2025 was a pass, but only after a failure the previous day for a non-functioning offside rear position lamp and another CV boot breach, and it still carried advisories for gearbox mounting defect, gearbox oil leak, exhaust gas leak, and deteriorated number plates. The advisories for gearbox mounting and oil leakage have been present since 2022 and have not been rectified across three subsequent tests, while the rear brake disc wear and front lower suspension arm bushes flagged in 2023 represent progressive wear items that will likely require attention if not already addressed. Stop lamp failures on the offside rear in 2024 and nearside rear in 2022, alongside position lamp failure in 2025, also suggest intermittent electrical issues affecting the rear lighting circuit, which is worth investigating separately from the chassis and drivetrain concerns. Against an age of approximately twenty-one years, the recorded 133,565 miles equates to around 6,360 miles per year on average, which is broadly typical for a vehicle of this vintage and confirms regular rather than sporadic use. There are no extended gaps in the testing record, with annual MOT entries consistently recorded from 2022 onwards, indicating the car has remained in active service throughout this period. While the mileage accumulation itself does not present an anomaly, the combination of average annual mileage with escalating mechanical defects points to a drivetrain and undercarriage that is reaching the end of its economical service life, particularly given that critical protective components such as CV boots have not been maintained despite repeated identification across multiple test cycles. The continuity of testing also means there is no evidence of a long lay-up that might have masked deterioration elsewhere, so the wear patterns observed are representative of continuous operational use. For a prospective buyer, the priority items to inspect on a physical viewing and test drive centre on the drivetrain, suspension, and braking systems flagged throughout the record. The persistent CV boot failures demand a close visual inspection of both front inner and outer gaiters for fresh grease deposits, splits, or taped repairs, and a test drive over uneven surfaces or full-lock manoeuvres should be carried out while listening for clicking, knocking, or juddering from the front hubs, which would indicate that contamination has already damaged the joint internals. Given the recurring gearbox oil leak and defective mounting, the underside should be inspected for wet residues around the gearbox housing and the mounting itself checked for cracking, hardening, or separation, while a road test should reveal any clonking on acceleration, deceleration, or gear selection that suggests the mount has failed completely. The front lower suspension arm bushes noted as splitting in 2023 should be examined for play by rocking each front wheel at nine and three o'clock, and any knocking over bumps or vague steering response would confirm that replacement is now overdue. The rear brake discs, which were pitted or scored in 2023, should be felt for a pulsing sensation through the brake pedal under firm application, and a visual check of disc surface condition and pad material remaining is essential. Finally, the minor exhaust leak noted in 2024 and 2025 warrants a listen for ticking or hissing from the front exhaust section at idle, and the rear lighting should be comprehensively checked for both stop lamps, position lamps, and indicators to rule out the recurring electrical faults seen in the MOT history.