2013 Audi A6 S Line TDI CVT 2.0L Diesel · T20 BOV

The 2013 Audi A6 S Line TDI with CVT transmission has maintained a clean MOT history across all four tests, with no defects or advisories recorded since the most recent inspection on 25 October 2025 at 190,859 miles. This suggests the vehicle has passed all mandatory roadworthiness checks without fail, though the absence of advisories does not guarantee hidden mechanical issues. The consistent pass status implies that, at the time of testing, the vehicle met DVSA’s minimum standards for brakes, emissions, suspension, and structural integrity. However, the final pass date is now over nine months old, meaning the vehicle has not been subject to a formal inspection since. Given the age and mileage, this delay is notable—particularly for a vehicle with a complex drivetrain and higher wear items like CVT components, which can degrade without regular professional oversight. The mileage progression reveals a steady but unusually high annual average of approximately 14,681 miles, which is well above the typical UK benchmark for a vehicle of this age. Between the 2022 and 2023 tests, the vehicle accumulated 11,545 miles in just over 12 months, a rate that accelerates wear on suspension bushes, coil springs, and brake calipers. The gap between the 2022 and 2023 tests—12 months—is standard, but the subsequent intervals (12 months between 2023 and 2024, and 12 months between 2024 and 2025) do not account for the cumulative effect of this mileage on high-stress components. The lack of advisories in prior tests does not preclude the need for a buyer to verify whether critical items like the CVT transmission fluid, brake fluid condition, or suspension alignment have been serviced within the last 12 months. Given the vehicle’s age and mileage, a buyer should prioritise an independent inspection of the CVT transmission for fluid degradation or binding gears, as these systems are prone to failure without regular maintenance. The suspension should be closely examined for worn or leaking shock absorbers, degraded bushes, and corrosion at mounting points—particularly around the subframes and sills, where salt-induced damage is common in older Audi models. Brake discs and calipers, though not flagged in MOTs, may show uneven wear or binding, especially if the vehicle has been driven hard at high mileage. Finally, the exhaust system should be checked for leaks or excessive corrosion, as TDI engines are susceptible to catalytic converter failure over time. The absence of MOT advisories does not eliminate the risk of these components failing unexpectedly, so thorough visual and functional checks are essential.