2021 Audi A5 S Line 35 TDI Mhev S-A 2.0L Diesel · AX21 HYU

The most recent MOT test on 2025-07-15 confirms this Audi A5 remains roadworthy at 64,117 miles, with no defects or advisories recorded. The consistent pass status across both tests—2024-07-16 at 42,565 miles and the latest—indicates no recurring mechanical failures or structural weaknesses were detected by the tester. However, the absence of advisories does not preclude underlying issues, particularly given the vehicle’s high mileage for its age. The lack of any warnings suggests either diligent maintenance or that critical components have not yet reached failure thresholds, though further scrutiny is essential to verify this. The mileage progression reveals an accelerated usage pattern, with 21,552 miles accumulated between tests over a year, averaging roughly 18,000 miles annually. This exceeds typical expectations for a vehicle of this age, implying increased wear on high-stress components such as suspension bushes, coil springs, and brake calipers. The gap between tests aligns with the legal MOT interval, but the rapid mileage accumulation raises questions about whether routine servicing—particularly for TDI-specific items like turbocharger health, diesel particulate filter (DPF) functionality, and exhaust emissions—has been consistently addressed. Given the lack of recorded faults, a buyer should prioritise an independent inspection of the suspension geometry, particularly rear bushes and ball joints, which often degrade under high mileage. The MHEV system introduces additional complexity, so verification of hybrid battery health, high-voltage wiring integrity, and regenerative braking efficiency is critical. Brake discs and pads, while not flagged in tests, may warrant closer examination given the mileage, especially if there’s any evidence of uneven wear or binding calipers. Structural corrosion, particularly around wheel arches, subframes, and exhaust components, should also be checked, as TDI engines are prone to underbody rust. Finally, the DPF and AdBlue system should be inspected for soot buildup or clogging, as these are common failure points in diesel hybrids at this mileage.