2009 Audi A6 2.0L Diesel · WJ59 USV

A history of failing MOT tests on easily observable wear items and minor electrical faults, rather than deep structural or complex mechanical defects, defines the roadworthiness profile of this Audi A6. The most recent testing cycle on 21 August 2024 resulted in a clean pass, but only after an immediate retest to rectify a failed nearside rear stop lamp. This quick turnaround mirrors the vehicle's previous testing cycle in September 2023, where it initially failed on dangerous tread depth levels on both front tyres before passing two days later. While the lack of persistent structural corrosion or major emissions failures is encouraging, the recurring presence of minor bulb failures, worn brake pads, and severely worn tyres indicates that the vehicle's consumables are frequently run down to the limit of legal roadworthiness. Accumulating 128,593 miles over approximately seventeen years equates to an average of roughly 7,564 miles per year, representing a highly typical and consistent usage pattern for a premium executive saloon of this era. This steady accumulation of mileage is generally preferable to long periods of complete inactivity, as regular operation helps maintain the integrity of engine seals, prevents auxiliary belt degradation, and keeps the braking system free from heavy corrosion. However, at this mileage and age, major drivetrain components such as the turbocharger, dual-mass flywheel, and diesel particulate filter if equipped, as well as the complex multi-link suspension setup characteristic of this chassis, are well within their wear-and-tear replacement windows. Prospective buyers must pay close attention to specific chassis and engine components flagged in past tests during a physical inspection and test drive. The offside front upper suspension arm ball joint was noted for having play in 2019, and although it has not reappeared as a formal advisory, the multi-link front suspension on this generation of Audi A6 is notorious for bush and ball joint wear. During the test drive, negotiate uneven road surfaces, speed bumps, and sharp turns while listening for distinct knocking, clunking, or creaking sounds from the front suspension, and feel for any steering wheel vibration or a tendency for the car to wander. Additionally, the low oil level warning flagged on the dashboard in 2021 warrants a thorough inspection under the bonnet; check the physical dipstick level, inspect the engine bay for active oil leaks or misting around the rocker cover and oil filter housing, and verify that no warning lights persist on the instrument cluster. The braking system and electrical consumables also require targeted verification. Rear brake pads were flagged as wearing thin over consecutive years in 2020 and 2021, meaning the brake discs and calipers should be inspected for excessive lip wear, scoring, or uneven pad contact. On the test drive, apply the brakes firmly to check for pedal judder or pulling to one side, which could indicate warped discs or a binding caliper. Given the history of minor electrical faults including inoperative registration plate lamps and a failed rear stop lamp, a full functional check of all exterior lighting, including the high-level brake light and indicator clusters, is essential. Finally, because the vehicle has a history of running tyres down to dangerous limits and suffering from perished sidewalls, inspect all four tyres to ensure they are of a reputable brand, have matching tread patterns across the axles, show no signs of sidewall cracking, and possess ample tread depth well above the legal minimum.