2018 Peugeot 308 1.6L Diesel · CX18 AVF

High annual mileage and a recent advisory for an oil leak define the mechanical profile of this Peugeot 308, which has transitioned from a failure in 2023 to a relatively clean record in its most recent test on 11 June 2026. While the vehicle has secured consecutive passes since the 2023 failure involving inoperative registration plate lamps and dangerous tyre tread depths, the emergence of an oil leak advisory in the latest inspection suggests a shift in the vehicle's maintenance requirements. This recent finding indicates that while previous critical safety issues like tyre wear have been addressed, the engine or associated seals are now showing signs of fluid loss that require monitoring. The vehicle's usage pattern is characterised by significant annual accumulation, having covered 156,068 miles over approximately eight years. This equates to an average of roughly 19,508 miles per year, which is considerably higher than the UK average for a vehicle of this age. Such high-frequency use typically accelerates the wear on consumable components and mechanical assemblies. For a vehicle with this specific mileage profile, the mechanical focus shifts toward the longevity of the drivetrain, suspension bushings, and braking systems, as the components have been subjected to more frequent thermal cycles and road stresses than a lower-mileage equivalent. Prospective buyers should focus their physical inspection on the source of the oil leak noted in the June 2026 advisory. During a test drive, it is essential to monitor for any changes in engine performance or unusual smells, such as the scent of burning oil, which could indicate that leaked fluid is contacting hot exhaust components. Additionally, because the vehicle has experienced high mileage, a thorough check of the engine bay for excessive oil misting or weeping around gaskets and seals is necessary to determine if the leak is a minor seepage or a more significant fault that could lead to oil starvation or environmental contamination. Given the history of tyre failures and the high mileage, the integrity of the suspension and steering components should be a priority during evaluation. Listen for any knocking, clunking, or rhythmic thumping when driving over uneven surfaces or speed bumps, which could indicate worn suspension linkages or deteriorated bushes. Furthermore, check for any steering pull or vibrations through the steering wheel at motorway speeds, as the high annual mileage increases the likelihood of wear in the steering rack or front-end components. Ensure that all recent tyre replacements are of a high standard to avoid a recurrence of the dangerous tread depth issues recorded in 2023.