2021 Audi A4 S Line 35 Tfsi Mhev S-A 2.0L Petrol · LM71 HTZ

The defining mechanical story of this 2021 Audi A4 S Line is one of largely untroubled roadworthiness punctuated by a single, specific wear concern. Across the recorded DVSA history the vehicle has accumulated two MOT tests, both resulting in passes with the most recent examination on 25 November 2025 confirming the car remains compliant at the time of testing. The 2024 test passed without any advisories recorded, indicating that on that occasion the vehicle was presented in a condition free of notable defects or borderline items. The 2025 pass, however, introduced advisories on both front tyres, each noted as worn close to the legal limit and on the edge, which is a meaningful indicator of front axle geometry or alignment behaviour rather than simple age-related wear. With 17,199 miles recorded over approximately five years, this A4 is operating at a low annual mileage of around 3,440 miles per year, which is substantially below the typical mileage for a vehicle of its age and class. This low accumulation rate can mean reduced wear on major drivetrain and suspension components such as the clutch, dual-clutch mechatronics, brake calipers, and coil springs, but it also raises questions about usage patterns. There are no extended gaps in the testing record that would suggest a prolonged period off the road, and the mileage progression between the 2024 and 2025 tests is consistent with light ongoing use rather than a sudden accumulation. Buyers should remain alert to the possibility of dry corrosion on internal braking surfaces, stiffness in the brake calipers from infrequent operation, and potential oil seal drying on lightly used components, while recognising that the overall mileage places relatively modest demand on wear items. Given that the only recorded advisories relate to the front tyres being worn on the edge, a prospective buyer should pay particular attention to the front suspension and steering geometry on any test drive. Listen for knocking or clonking from the front struts, top mounts, or anti-roll bar linkages when traversing speed bumps or uneven surfaces, and feel for any vagueness, tramlining, or pull to one side that could indicate worn suspension bushes, control arm issues, or alignment values outside specification. Inspect the inner and outer edges of the front tyres directly for uneven shoulder wear or feathering, as the advisory text specifically references edge wear rather than general tread depletion. It is also worth checking that a full set of replacement tyres has been fitted since the advisory was issued, and confirming the spare or repair kit is present and serviceable. Beyond the tyre-specific concerns, the test drive should include a thorough check of the MHEV 12V system and the S tronic automatic gearbox given the low mileage. Verify smooth, jerk-free changes across all gears, as lightly used dual-clutch units can develop hesitation or shudder when cold. Confirm the start-stop function operates correctly, as this is a core element of the mild-hybrid system, and observe whether any warning messages relating to the hybrid system appear on the instrument cluster. Finally, inspect the underside of the vehicle for any signs of fluid leaks from the engine, power steering rack, or front subframe mounting points, as low-mileage vehicles that have been predominantly used for short journeys can sometimes exhibit weeping seals or perished flexible components that only become apparent under closer examination.