2014 Audi A6 3.0L Diesel · BU14 FYG

Structural corrosion and recurring tyre wear issues define the mechanical profile of this Audi A6, with the most recent test on 01 April 2026 showing a pass following a failure for a leaking fuel tank. A persistent advisory for rear subframe corrosion has appeared in every MOT record since June 2024, indicating a long-term trend of oxidation that has not been addressed. The vehicle also demonstrates a frequent pattern of tyres reaching the legal limit or showing uneven wear, a trend that was present in the 2026 pass as well as multiple previous tests. The vehicle has covered 141,097 miles over its twelve-year lifespan, averaging approximately 11,758 miles per year. This usage pattern is consistent with typical annual accumulation for a vehicle of this age. Mechanically, this level of mileage suggests that components subject to friction and fatigue, such as suspension bushes, brake discs, and damping units, are likely approaching the end of their service life or have already required attention, as evidenced by the recorded failures and advisories. A prospective buyer should pay close attention to the underbody during a physical inspection, specifically focusing on the rear subframe to assess the extent of the recorded corrosion. While the 2026 record notes the corrosion is not seriously weakened, the longevity of this advisory warrants a close look for any signs of structural degradation. Additionally, the 2024 advisory regarding oil misting on the offside front shock absorber suggests potential damping failure; during a test drive, listen for knocking or clunking sounds over uneven surfaces and check for any excessive bouncing or instability that could indicate the shock absorber is no longer controlling the suspension effectively. The history of worn tyres and previous failures involving suspension arm bushes indicates that alignment and steering geometry should be a priority. On a test drive, check for any steering pull to one side or a wandering sensation at motorway speeds, which could stem from the worn bushes or uneven tyre wear noted in the records. Furthermore, given the recent major failure for a leaking fuel tank, a thorough check of the fuel system and surrounding area for any lingering scents of petrol or visible weeping is essential to ensure the previous repair is robust and the system is fully sealed.