2017 Audi A6 2.0L Diesel · BT67 CYK

Recurring tyre wear and missing undertray components represent the primary mechanical narrative for this Audi A6, which achieved a clean pass on 17 April 2026. While the most recent inspection shows no defects, the preceding two years of testing highlighted a consistent pattern of tyre degradation and minor structural underbody damage. This indicates that while the vehicle is currently meeting roadworthiness standards, the recurring nature of tyre-related advisories suggests a need for close scrutiny of the suspension geometry and alignment, as the vehicle has demonstrated a tendency to wear tyres unevenly across multiple test cycles. Accumulating 101,958 miles over nine years results in an average annual usage of approximately 11,329 miles, a figure consistent with standard motorway and mixed-road driving profiles. This consistent mileage accumulation suggests the vehicle has been in regular operation rather than subjected to prolonged periods of inactivity, which typically mitigates the risks associated with seized components or long-term fluid degradation. Prospective buyers should note that at this mileage, the drivetrain and suspension systems have experienced significant duty cycles, necessitating a thorough assessment of high-wear components that may not be captured during a standard MOT inspection. Given the history of tyre edge wear, the test drive should specifically focus on identifying signs of steering pull or vibration at motorway speeds, which can indicate misaligned tracking or worn suspension bushings. Listen carefully for any knocking or clunking noises from the front suspension when traversing uneven surfaces or speed bumps, as these symptoms often precede the failure of control arm bushes or ball joints on this chassis. Furthermore, the recurring mention of a partially missing nearside front undertray warrants a physical inspection of the area behind the front bumper; ensure that no plastic debris is fouling the cooling fans or auxiliary belts and check that the remaining undertray sections are securely fastened to prevent vibration or damage to low-hanging components. Beyond the specific advisories, the braking system requires a tactile evaluation during the test drive. Although no brake-related defects have been recorded, the vehicle's age and mileage suggest that discs and pads may be nearing the end of their service life. Depress the brake pedal firmly at various speeds to check for any pulsing or juddering, which could indicate warped discs or seized caliper sliders. Finally, verify that the engine reaches and maintains operating temperature correctly and check for any unusual oil misting or fluid dampness around the engine bay, as the underbody tray may have historically masked minor leaks that are now exposed due to the missing sections.