2020 Audi S4 Black Edition TDI Quattro A 3.0L Diesel · NM04 AAA

The July 2026 test at 57,416 miles returned a clean pass with no defects or advisories recorded, extending a flawless sequence across five consecutive inspections. This history indicates a stable, well-maintained trajectory rather than a developing fault pattern; the tester found no evidence of binding calipers, suspension play, corrosion, or emissions drift at any stage. Such a clean sheet on a six-year-old performance estate is atypical and suggests either proactive component replacement before presentation or genuinely low wear rates. Mileage accumulates steadily at roughly 9,500 miles per year, aligning with the 57,416 total recorded. The schedule shows a consistent annual rhythm, bar a six-month interval between the June and December 2024 tests at 32,527 and 36,266 miles respectively, likely reflecting an owner preference for early renewal. No prolonged storage periods or sudden mileage spikes appear in the record, and the most recent test occurred only three weeks ago, confirming the vehicle is currently licensed and roadworthy. A buyer must treat the absence of advisories as a prompt for thorough physical verification rather than reassurance. Inspect the front brake discs for lip development and pad depth, as the S4’s mass accelerates wear even without MOT flags. Check rear suspension arms and bushes for play, a known weak point on the B9 platform, and examine the coolant pipework around the V6 TDI’s thermostat housing for seepage. Verify tyre date codes and tread depth matches the clean reports, confirm the Haldex coupling oil has been serviced to schedule, and scan for any stored fault codes in the quattro drivetrain modules before purchase.