2021 Audi A3 S Line 35 Tfsi Mhev S-A 1.5L Petrol · RO21 DYC

The vehicle most recently passed its MOT on 10 April 2026, although this followed a failure the previous day. The maintenance trend is concerning due to the recurring failure of the Engine Management Indicator Light (MIL) in both 2025 and 2026. While the vehicle is currently certified as roadworthy, the repetition of this specific major defect suggests an intermittent electronic fault or a recurring issue within the engine management system that has required multiple interventions to resolve. The recorded mileage of 18,027 miles over approximately five years is exceptionally low, averaging roughly 3,605 miles per annum. While this indicates minimal wear on the drivetrain, suspension bushes, and interior trim, such low usage often implies a pattern of short-distance journeys or extended periods of standing. This usage profile can be more detrimental to certain components than consistent long-distance driving, as it may prevent the engine from reaching optimal operating temperatures and can lead to the accumulation of moisture in the exhaust and braking systems. A prospective buyer should investigate the nature of the recurring engine MIL failures to determine if they relate to a simple sensor replacement or a more complex issue within the mild-hybrid system. The history of tyre cuts and edge wear, combined with frayed seat belt webbing, suggests a lack of attention to detail in the vehicle's general upkeep. During a test drive, the buyer should be alert for any dashboard warning lights, engine hesitation, or unusual vibrations. A thorough physical inspection of the current tyres is essential to ensure that previous cuts have been rectified and that the tread is wearing evenly across the width of the tyre. Given the low mileage and age, specific attention must be paid to time-based degradation. Inspect the tyre sidewalls for perishing or hairline cracking caused by age rather than wear. The brake discs should be checked for heavy surface corrosion or evidence of binding calipers, which are common in vehicles that spend long periods stationary. The health of the 12V battery and the MHEV system should be verified via a diagnostic check, as infrequent use can lead to premature battery failure. Finally, the service records must be scrutinized to ensure that oil and filter changes were performed according to the manufacturer's calendar intervals rather than solely based on mileage.