2008 Audi A6 2.0L Diesel · OW08 HPA

A clear and recurring theme across this 2008 Audi A6's MOT history is the progressive deterioration of its suspension and underbody hardware, with two significant upper suspension arm failures in late 2023 and ongoing advisories relating to corroded rear suspension components and the rear sub-frame itself. The most recent test on 29 January 2026 was a pass, but it did not represent a clean bill of health: advisories were issued for front brake disc wear and rear sub-frame corrosion, alongside a minor for an offside rear position lamp issue. Going back to October 2024, the picture is broadly consistent, with advisories for front brake disc pitting, sub-frame corrosion, an intermittently flickering reverse light and registration plate lamps, and a noisy engine note. The vehicle passed cleanly in 2020 and 2021, suggesting that the bulk of the mechanical wear flagged since 2022 has developed over the last three to four years, and a prospective buyer should interpret the current pattern as one of escalating component wear rather than a stable, well-sorted platform. At 176,489 recorded miles across roughly 18 years, this A6 has covered approximately 9,800 miles per year on average, which is broadly typical for a vehicle of its age. The annual test entries from 2019 through 2026 indicate reasonably consistent use with no prolonged off-road gaps of multiple years, which means the recorded wear is broadly representative of the mileage shown rather than skewed by long periods of stationary storage. A higher-mileage executive saloon of this vintage typically shows the bulk of its wear on suspension bushes, brake components, engine ancillaries and corrosion-prone underbody structures, all of which align with the advisory and failure items noted across the DVSA record. The most pressing areas for a hands-on inspection are the front suspension and the rear underbody. The 2023 failure recorded both nearside and offside front upper suspension arm pins or bushes as excessively worn, and the 2022 pass noted the same components as worn but within legal limits. On a physical inspection, the buyer should check for any clunking or knocking over uneven road surfaces, vagueness in the steering around the straight-ahead, uneven front tyre wear particularly on the inner or outer shoulders, and any visible cracking, splitting or play in the upper wishbone bushes when the wheel is levered by hand. The advisory for rear suspension component corrosion from 2023 and the persistent rear sub-frame corrosion advisories in 2024 and 2026 indicate that structural and component corrosion is now an established pattern on this car. The rear sub-frame area should be examined closely for surface rust versus deeper perforation, particularly around mounting points, bushes and brake line brackets, and a thorough underbody inspection on a ramp is strongly advisable given that the advisories span three consecutive tests. Any brake line corrosion, perished rubber brake hoses or seized caliper slide pins would warrant immediate attention given the recorded front disc wear. The braking system requires a measured test-drive assessment. Front brake discs have been flagged as worn, pitted or scored on three consecutive tests from 2022 through 2026, which suggests that the discs have been on the car for some while and are now at a stage where replacement is likely imminent. During a road test, the buyer should feel for any judder or pulsation under heavy pedal pressure, listen for grinding or scraping noises, and check whether the vehicle pulls to one side under braking, which could indicate a binding or seized caliper. The rear brake set-up should be inspected for handbrake efficiency and any imbalance between nearside and offside. The engine-related advisory from October 2024 noting a noisy engine, combined with the high overall mileage, means it is sensible to listen on start-up for any timing chain rattle, auxiliary belt squeal or bottom-end knocking. Finally, given the repeated minor and advisory issues with the rear position lamps and reverse or registration plate lamps in 2024 and 2026, a simple walk-around check of all exterior lighting, including the multiple-light-source LED units which can suffer from individual diode failure, would be a sensible part of any pre-purchase evaluation.