2018 Audi A6 1.8L Petrol · YR18 PLZ

A vehicle approaching nine years of service and 216,301 miles presents a complex mechanical picture, and this Audi A6 is no exception. The most recent test on 13 December 2025 resulted in a failure driven by multiple safety and emissions-related defects, including an inoperative engine malfunction indicator lamp, a split nearside front outer drive shaft CV boot allowing dirt ingress, an offside stop lamp not functioning, and a supplementary restraint system warning lamp indicating a fault. The fact that the vehicle passed on the same date suggests these items were addressed promptly, but the breadth of simultaneous failures on a high-mileage executive saloon is noteworthy. A fractured nearside front coil spring recorded as a Major defect in September 2024 indicates suspension degradation consistent with heavy road use, and the persistent tyre wear advisories across multiple years point to either aggressive alignment geometry or simply the rapid tread consumption expected from a vehicle covering substantial motorway miles. The 2022 test recorded a Dangerous tyre tread depth below 1.6mm on the offside front, which is the most serious category of MOT defect and reflects a borderline safety condition at that time. With 216,301 miles accumulated over roughly eight years, the average annual mileage stands at around 27,038 miles, which is significantly above the typical UK average of 7,000 to 10,000 miles per year. This high rate of accumulation places considerable sustained load on the engine, transmission, clutch, braking system, suspension components, and drivetrain. The record contains no significant testing gaps that would suggest extended periods off the road, indicating the vehicle has been in continuous active service. Such sustained high-mileage use typically accelerates wear on timing chains, turbocharger components, dual-mass flywheels, and exhaust catalysts, particularly on turbocharged diesel and petrol Audi A6 variants. The oil misting observed on the offside front shock absorber in 2023 is a common consequence of high-mileage suspension wear and is generally not an immediate concern, though it signals the beginning of seal degradation that may progress if the component is not monitored. Prospective buyers should pay particular attention to the suspension system given the fractured coil spring failure in 2024. On inspection, examine all four coil springs for signs of corrosion pitting or stress fractures, particularly at the lower coils, and listen for any clonking or knocking noises over uneven road surfaces which would indicate worn suspension bushes, top mounts, or anti-roll bar drop links. The split CV boot recorded in late 2025 means the gaiter has been replaced or repaired; check for fresh grease around the joint and listen for clicking or vibration on full-lock turns which would indicate damaged CV joint internals. Inspect the area around the front shock absorbers for fresh oil seepage, as the 2023 advisory suggests the offside unit is already beginning to weep. Given the mileage, also verify the condition of the front brake discs and pads, as high annual mileage typically results in disc replacement every two to three services on heavier executive vehicles. On a test drive, specific symptoms worth monitoring include any pulling to one side under braking which could indicate warped front discs or a binding caliper, and any vibration through the steering wheel at speed which may suggest wheel imbalance, worn suspension linkages, or front tyre wear issues consistent with the recurring edge-wear advisories. Check that all warning lamps on the instrument cluster extinguish promptly after engine start, particularly the engine management light and the airbag or supplementary restraint system indicator, as these were both flagged as faulty in December 2025. Verify the operation of all brake lights, including the centre high-mounted lamp, and confirm the absence of any dashboard fault messages relating to emissions, sensors, or driver assistance systems. Finally, given the cumulative wear pattern and high annual mileage, a thorough pre-purchase inspection by a specialist familiar with Audi vehicles is advisable, with particular attention paid to the condition of the timing chain, turbocharger actuator operation, automatic transmission fluid quality, and any evidence of oil consumption between services.