2015 Audi A8 3.0L Diesel · CU65 KBK

High annual mileage and a recent advisory regarding an oil leak define the mechanical profile of this Audi A8. While the vehicle has maintained a consistent passing record since 2019, the most recent test on 12 April 2026 introduced the first recorded defect in the form of a minor windscreen damage advisory and, more critically, an advisory for an oil leak that was noted as not being excessive. This marks a shift from a multi-year period of clean MOT results between 2019 and 2025 to a state where fluid loss is now being monitored by examiners. The vehicle has covered 194,772 miles over its eleven-year lifespan, representing an average annual accumulation of approximately 17,707 miles. This level of usage is high for a vehicle of this age and indicates frequent, long-distance operation rather than short, urban trips. Mechanically, this high-mileage profile suggests that components subject to thermal cycling and physical wear, such as the drivetrain, suspension bushings, and various engine seals, have been subjected to significant cumulative stress. The consistency of the annual mileage suggests a regular usage pattern rather than periods of long-term storage. Prospective buyers should focus their physical inspection on the source of the oil leak identified in the April 2026 test. Given the high mileage, this could stem from various gaskets or seals within the engine or gearbox assembly. During a test drive, it is essential to monitor for any changes in engine performance, such as hesitation or irregular idling, and to check for any smell of burning oil which could indicate leaks onto hot exhaust components. Additionally, while the windscreen damage was noted as minor, the glass should be inspected for any signs of spreading cracks that could compromise structural integrity or driver visibility. Because of the high mileage, a thorough check of the suspension and steering components is warranted, even though no specific defects were flagged in recent years. Listen for any knocks, clunks, or knocks when traversing uneven surfaces, which may indicate worn suspension bushes or dampers. The steering should be checked for any pulling to one side or vibrations through the steering wheel, which could be indicative of worn bushings or steering rack components. Monitoring the consistency of the engine's oil level between services will be a necessary part of managing the documented leak.