2020 Audi A6 2.0L Diesel · MP05 STU

Recurring advisories regarding the offside rear lower coil spring mounting indicate a persistent issue with structural corrosion and component degradation in the rear suspension assembly. This specific area has been flagged in three consecutive tests since 2023, progressing from noted corrosion in 2023 and 2024 to a perished spring mount in the February 2025 test. While the vehicle passed its most recent MOT on 27 February 2026, the presence of an advisory for an offside front tyre worn close to the legal limit suggests that while the structural corrosion issue was not the primary cause of failure, tyre wear remains an ongoing maintenance requirement. The vehicle has covered 31,408 miles over its six-year lifespan, which equates to an average annual usage of approximately 5,235 miles. This is a low mileage profile for an Audi A6, suggesting the vehicle has seen relatively light road use. Mechanically, such low annual accumulation can sometimes mean components like suspension bushes and tyres are subject to more age-related degradation and perishing rather than heavy wear from high-frequency usage. The low mileage does not negate the recorded issues with the spring mount, as corrosion can occur regardless of distance travelled. A prospective buyer should pay close attention to the rear suspension during a test drive to address the history of spring mount corrosion and perishing. Listen for any knocking, clunking, or metallic banging sounds when driving over speed bumps or uneven road surfaces, as these are common symptoms of failing spring mounts or weakened coil springs. It is also advisable to inspect the offside rear lower area for any signs of significant rust or structural compromise that may have progressed beyond the previous advisory levels. Furthermore, the recent advisory regarding the offside front tyre being worn on the edge necessitates a thorough inspection of the front suspension geometry. If the tyre is wearing unevenly, this could indicate an issue with wheel alignment, worn suspension bushes, or a faulty steering component. During the test drive, check for any pulling to one side or steering wheel vibration, which would corroborate the tyre wear patterns noted in the February 2026 record. The previous advisory for a central locking fault on the dashboard should also be verified to ensure the electronic control systems are functioning correctly.