2015 Audi A6 2.0L Diesel · YA64 MMV

The most recent MOT, carried out on 6 December 2025, resulted in a pass but recorded an advisory that the off‑side rear shock absorber is showing a light misting of oil. This same advisory appeared at the previous two annual tests, indicating a persistent but not yet failing condition. Apart from that, the only other items flagged in the last six years have been minor – a rear position lamp fault in 2020 and 2022, a tyre‑damage advisory on the near‑side rear wheel in 2023, and a child‑seat obstruction note in 2023. Overall the vehicle’s maintenance trend appears stable; there are no outright failures, but the repeat shock‑absorber observation suggests a component that will likely need attention within the next twelve months. At 93 451 miles the car has averaged roughly 8 500 miles per year since its 2015 build, which sits comfortably within the typical UK usage pattern for a mid‑size executive saloon. The mileage record shows no large unexplained gaps, implying the vehicle has been driven regularly rather than being stored for prolonged periods. This level of use will have contributed to normal wear of consumables such as tyres, brake pads and discs, and the suspension bushings, but it does not point to excessive strain on the engine or drivetrain beyond what would be expected for its age. When you inspect the car, give particular focus to the rear suspension. The oil mist on the off‑side rear shock absorber is a sign that the damper seals may be beginning to leak; look for dampness around the shock body, a softening of ride quality, or any clunking noises when the rear wheels are forced over bumps. Check the condition of the rear shock mounts, surrounding bushings and the coil springs for corrosion or cracking, as a failing damper can accelerate tyre wear and affect handling. The near‑side rear tyre was noted as slightly damaged or perishing in 2023 – examine the sidewall for cracks, dry rot, or bulges, and verify the tyre’s DOT code to confirm it is not beyond six years old, regardless of tread depth. While the 2019 advisory flagged all four tyres as close to the legal limit, confirm that tread depth is now at least 3 mm on each wheel and that wear is even across the left‑right and front‑rear axes, which would indicate healthy alignment and suspension geometry. During a test drive listen for any shudder or vibration under braking, which could reveal worn discs, warped rotors or binding calipers that may have been masked by the tyre wear warnings. Finally, address the minor electrical and time‑based items. The rear position lamp fault should be rectified; verify that all exterior lighting functions correctly, including the rear fog and side markers, as intermittent faults can re‑appear if the bulb or wiring is marginal. Inspect the battery for sulphation and check the electrolyte level if it is a conventional lead‑acid unit, especially given the vehicle’s age; a load test will reveal any loss of cranking power. Examine the engine bay for any signs of oil, coolant or brake fluid leaks, and confirm that the coolant, engine oil and brake fluid have been changed in line with the manufacturer’s calendar intervals – typically every 12‑24 months for a vehicle of this vintage. A visual inspection of the under‑carriage for rust, particularly around the wheel arches and rear sub‑frame, will highlight any corrosion that could compromise structural integrity after long periods of standing. If the A6 is a diesel, a quick check of the diesel particulate filter regeneration history and any DPF warning lights is advisable to avoid costly future servicing. Addressing these points will give you a clear picture of the car’s current roadworthiness and the imminent maintenance it may require.