2014 Audi A6 3.0L Diesel · FD14 KVX

The Audi A6 in question presents a mixed but ultimately concerning maintenance history, with the most recent MOT—conducted on 4 July 2025 at 164,678 miles—passing without defects. However, the immediate prior test on 30 June 2025 at 164,149 miles failed for unspecified reasons, a pattern repeated in June 2023 when the vehicle failed at 111,345 miles before passing three days later. The absence of recorded defects in these failures is unusual, as MOT failures typically involve identifiable issues such as brake efficiency, emissions, or structural concerns. This suggests either a procedural error or a narrowly avoided critical fault, neither of which inspires confidence in the vehicle’s upkeep. The trend is neither stable nor improving; the repeated failures without explanation imply either inconsistent testing or a history of borderline roadworthiness that has yet to manifest in documented defects. The mileage accumulation is aggressive for a 12-year-old vehicle, averaging roughly 13,723 miles annually—a rate that accelerates wear on high-stress components. Between the 2024 and 2025 tests, the car covered 25,094 miles in just over a year, a pace that would strain suspension bushes, coil springs, and brake systems if not properly maintained. The gap between the 2023 and 2024 MOTs—where mileage jumped from 111,348 to 139,584 over 12 months—further suggests either heavy usage or a period of neglect followed by a sudden push into service. Such mileage patterns often correlate with deferred maintenance, particularly in areas prone to wear under load. Given the lack of documented defects, a buyer should prioritise an in-person inspection of structural integrity, focusing on wheel arches, suspension mounts, and subframe connections for signs of fatigue or corrosion. The binding brake calipers or uneven disc wear—common in high-mileage Audis—should be checked manually, as these are frequently overlooked in MOTs unless severe. Pay particular attention to the rear suspension, where coil springs and bushes degrade under heavy use, and verify that the exhaust system remains securely mounted, as vibration-induced failures are prevalent in this model. The absence of recorded advisories in recent tests is telling; if the car has been driven extensively since July 2025 without documented issues, it implies either exceptional luck or a history of just-passing repairs that may not hold long-term.