2021 Audi S6 TDI Quattro Auto 3.0L Diesel · AF21 MBO

The Audi S6 TDI Quattro presents as roadworthy with a stable maintenance trend. The most recent test on 12 March 2026 at 22,107 miles returned a pass with no defects recorded. Prior tests on 12 March 2025 at 19,517 miles and 15 March 2024 at 17,246 miles also passed cleanly. Three consecutive annual tests with zero advisories indicate the previous keeper maintained the vehicle to a high standard. The mileage pattern shows exceptionally low use for a five-year-old vehicle. The car covered just 2,590 miles between March 2024 and March 2025, then 2,590 miles again to March 2026, averaging roughly 4,421 miles per year. No gaps or sudden accumulation appear in the record. The sparse, clean history reflects light motoring rather than deferred maintenance. A buyer should still commission an independent inspection despite the unblemished MOT record. Low annual mileage combined with possible long stationary periods raises the risk of perished rubber components such as suspension bushes, degraded brake hoses, and flat-spotted tyres. Drivetrain seals and the Quattro differential may show age-related hardening not captured by an MOT pass. Verify the service history matches the low mileage claim and confirm timing belt or cam belt intervals for the TDI engine. Check brake discs for corrosion from standing and inspect underbody structures for early surface rust. The official record shows no mechanical faults, but physical examination remains essential before purchase.