2021 Audi S6 Black ED TDI Mhev Quattro A 3.0L Diesel · RO71 URT

The most recent MOT, carried out on 28 October 2025, was passed with no recorded defects, and the preceding test on 19 November 2024 also returned a clean pass. The absence of advisory or failure items across two consecutive annual examinations indicates a stable maintenance pattern; there is no evidence of emerging mechanical deterioration or recurring fault that would suggest a worsening trend. At five years old the car has logged only 23 644 miles, averaging roughly 4 700 miles per annum. This is considerably below the typical UK average for a performance saloon and points to either light, infrequent driving or extended periods of inactivity. Low mileage reduces cumulative wear on consumables such as brake pads, clutch, and tyres, but it can also be a symptom of long‑term storage, which may allow moisture to settle in electrical connections, cause battery sulphation, and encourage corrosion on suspension joints and under‑body panels. For a vehicle with this usage profile the buyer should focus on age‑related checks rather than mileage‑driven wear. Inspect the tyre sidewalls for cracking, hardening or dry rot, and verify tread depth is uniform and above the legal minimum; any uneven wear could reveal hidden suspension or alignment issues despite the low miles. Examine the 12‑volt battery for terminal corrosion and test its cranking voltage, as prolonged standing can diminish charge‑holding capacity. Assess the brake discs for surface rust, scoring or glazing and ensure the pads have sufficient thickness; the calipers should move freely without binding, and any pulsation under braking would merit further investigation. Verify that all fluid reservoirs are topped up and that the engine oil, coolant, and brake fluid have been replaced according to the manufacturer’s time‑based service intervals, typically every 12‑24 months regardless of mileage. Finally, a thorough visual inspection of the suspension components—coil springs, control arm bushes, and anti‑roll bar links—should be undertaken for any signs of corrosion, cracking or excessive play. Check for oil, coolant or transmission fluid leaks around the engine bay and under the chassis, and confirm that the diesel particulate filter has completed regular regeneration cycles, as a dormant DPF can become clogged. Ensure the quattro all‑wheel‑drive system engages smoothly and that all electronic modules, including the infotainment and driver‑assist features, operate without fault. A qualified pre‑purchase inspection will confirm that the car’s low‑mileage advantage has not been offset by age‑related degradation and will provide peace of mind before committing to purchase.