2021 Audi A6 S Line 40 TDI Mhev S-A 2.0L Diesel · ML71 VDF

The vehicle is currently roadworthy, though the maintenance trend shows a pattern of reactive rather than proactive care. The most recent test in November 2025 at 19,600 miles resulted in a pass despite several technical advisories that indicate emerging mechanical wear. While the vehicle cleared a failure in November 2024 due to service brake efficiency falling below requirements, the subsequent test flagged degraded rear discs, suggesting the immediate braking fault was addressed but new issues are developing. The mileage profile is notably low for a five-year-old vehicle, averaging approximately 3,900 miles per year. Between the November 2024 test at 14,737 miles and the November 2025 test, the car covered 4,863 miles. This low usage typically suggests less strain on the drivetrain and engine components, but it often correlates with specific issues such as brake corrosion and tyre flat-spotting when a vehicle sits for long periods without regular use. A buyer must conduct a close inspection of the braking system, as the November 2025 advisory noted the rear brake discs are worn, pitted, or scored. This follows the previous failure regarding brake efficiency, indicating the components are reaching the end of their functional life despite the low mileage. The front windscreen also shows recurring damage noted across two consecutive tests, which should be checked for cracks that may eventually compromise structural integrity or visibility. The vehicle's under tray requires a physical inspection, as it has been flagged as damaged in both 2024 and 2025. While the tester noted it was not likely to detach, the persistent nature of this fault suggests potential impact damage or mounting fatigue that remains. Additionally, the repaired nearside rear tyre should be monitored for signs of structural bubbling or uneven degradation, which can occur on low-mileage vehicles stored over time.