2022 Audi A6 S Line 40 TDI Mhev Quat S-A 2.0L Diesel · DC22 LLC

A clean and consistent MOT pass on 18 November 2025 confirms the 2022 Audi A6 S Line 40 TDI MHEV quattro S Tronic remains in good roadworthy condition with no recorded defects or advisories, supporting an overall picture of mechanical stability. The only anomaly in the testing record is a fail dated the day prior, on 17 November 2025, which also lists no defects. This effectively represents a same-day fail and retest sequence, suggesting a minor rectification was carried out between the two appointments rather than any underlying mechanical or structural concern. With no advisories logged across the recorded history, there is no evidence of chronic wear items, corrosion, or component degradation requiring ongoing attention. The recorded mileage of 50,500 miles against a four-year age places this A6 well above the typical annual accumulation rate for a modern executive diesel, averaging around 12,625 miles per year rather than the more common 8,000 to 10,000 seen on similar-age vehicles. This elevated usage profile points to a car that has been driven consistently, likely covering a mix of motorway and urban miles, which has implications for the wear rate of consumables and serviceable components. Higher mileage on a 40 TDI engine generally accelerates consumption of brake discs and pads, clutch and dual-clutch mechatronic components, turbocharger wear, and suspension bushes and dampers, although the MHEV mild hybrid system itself is largely maintenance-free aside from its 12V support battery and associated wiring. Importantly, despite the heavier usage, no advisories have yet been raised for any of these wear items, indicating the vehicle has remained within healthy tolerance thresholds at the time of test. Given the elevated mileage and the quattro drivetrain layout, particular attention should be paid during any inspection to the condition of the front and rear brake discs, as edge wear, lipping, or hot spots on the disc surface can develop well before the pads reach minimum thickness. Listen for any binding caliper symptoms such as pulling to one side under braking or a dragging sensation after release, and check for uneven pad deposition. On the test drive, pay close attention to suspension refinement; knocks or clonks over uneven surfaces, particularly from the front, could point to worn control arm bushes, anti-roll bar drop links, or top mount bearings, all of which are common on higher-mileage Audi platforms. Steering should remain precise and self-centring without vibration through the wheel, as any vagueness or judder could indicate wear in the front suspension geometry or propshaft flex joints associated with the quattro system. The 40 TDI engine itself should be monitored for any signs of timing chain stretch, which on earlier Audi diesels can manifest as a rattle on cold start, and for oil consumption by checking the dipstick and underside of the engine bay for any seepage from the sump, rocker cover, or turbocharger oil feed lines. The S Tronic dual-clutch gearbox, while generally robust, can develop mechatronic issues at higher mileage, so any hesitation on initial engagement, shudder during low-speed manoeuvres, or jerky changes between first and second gears should be noted carefully. Finally, inspect the underside of the vehicle thoroughly for any corrosion on the subframe, brake lines, and suspension components, as the quattro system adds additional underbody complexity, and any signs of fluid weeping from the rear final drive or transfer case should be flagged. A pre-purchase inspection by an Audi specialist or independent with VCDS diagnostics access would be strongly advisable to confirm the health of the MHEV system, AdBlue injection, DPF soot loading, and gearbox adaptation values before committing to purchase.