2002 Audi A6 2.5L Diesel · LG52 KOB

Structural corrosion and progressive consumable wear define the mechanical history of this Audi A6, culminating in a pass on 2025-10-10 following an initial failure for a supplementary restraint system warning lamp fault. The underlying test record reveals a consistent pattern of recurring component deterioration, including corrosion noted on both rear coil springs and the underside of the vehicle, alongside thinning friction material on all four brake pads and edge wear on the nearside front tyre. Earlier tests further highlight chronic vulnerabilities, marked by persistent oil leaks, steering linkage play in the offside track rod end, and historical suspension arm wear, demonstrating that this chassis requires ongoing mechanical intervention to maintain roadworthiness. Accumulating 200,189 miles over its 24-year lifespan equates to an average annual mileage of roughly 8,341 miles, representing a typical usage profile for a large executive saloon of this era. This steady accumulation indicates that the vehicle has been regularly utilized rather than left standing for extended periods, though high mileage inevitably places substantial cumulative stress on drivetrain components, steering joints, and load-bearing suspension assemblies. The presence of continuous advisory items across consecutive annual tests suggests that maintenance has historically been reactive, addressing immediate statutory failures rather than preventing progressive wear. When inspecting the vehicle on a test drive, prospective buyers must carefully evaluate the integrity of the suspension and steering systems by listening for knocks, clunks, or rattles when navigating over rough road surfaces, potholes, or speed bumps, which would indicate accelerated wear in the upper suspension arms, bushes, or the offside track rod end. The steering response should be checked for excessive play or vagueness on-centre, and the brakes must be tested for immediate stopping power and pedal firmness without any grinding or judder, given the recent warnings regarding thin brake pads. Additionally, a thorough underbody inspection on a ramp is essential to assess the extent of the corrosion noted on the rear coil springs and the general underside, as well as to locate the source of the recorded engine oil leaks. Electrical functionality and auxiliary systems also demand careful verification before purchase, specifically ensuring that the supplementary restraint system warning light illuminates correctly during ignition and extinguishes promptly, confirming the SRS fault identified in the 2025 test has been properly rectified. All exterior lighting, including position lamps and rear fog lamps that have previously caused test failures, must be checked for stable operation. Finally, inspect the windscreen for any chips or cracks, verify that the front wipers operate smoothly across all speeds, and examine the tyres for uneven shoulder wear that could point to underlying steering geometry or alignment misalignment.