2009 Audi A4 2.0L Diesel · ML09 VYA

The most recent MOT test on the 2009 Audi A4 was conducted on 2025-04-07 and resulted in a clean pass, marking a positive turnaround following a series of failures and advisories in the preceding year. While the vehicle’s MOT history demonstrates a pattern of recurring issues—particularly in suspension components, drivetrain joints, and tyre wear—there has been no major failure since 2024-04-06, suggesting a stabilization in its condition. The 2024-04-04 failure was particularly critical, with major defects including corroded structural sill components, excessively worn ball joints, and a split CV joint boot, all of which compromise long-term reliability. However, the absence of such failures in the intervening period indicates that the vehicle may have undergone corrective action, though the advisories from 2024-04-06—such as reduced damping in shock absorbers and near-side rear brake disc wear—remain unresolved and warrant ongoing attention. The recorded mileage of 134,875 miles for a vehicle aged 17 years represents a moderate annual usage rate of approximately 7,934 miles per year, which is consistent with typical light-to-moderate use patterns for its class. Such mileage does not suggest aggressive driving or excessive wear, but it also does not indicate minimal exposure, which could lead to hidden issues from prolonged idleness, such as corrosion from standing or fluid degradation. The absence of significant mileage spikes between MOTs suggests the vehicle has been driven regularly, though the 2022-03-08 failure—where both front tyres were dangerously underinflated—could imply occasional neglect or improper storage. The wear on suspension components and brake discs aligns with moderate usage, but the presence of advisories like reduced shock absorber performance and near-side rear brake disc wear suggests that consumables and critical systems are approaching or exceeding their operational limits. For a prospective buyer, the most critical areas to inspect are the suspension and drivetrain, as these have been flagged repeatedly. Visually check for uneven tyre wear patterns, particularly on the near-side rear, which may indicate misalignment or suspension misalignment. Listen for clunks or harshness in the rear suspension during cornering or over bumps, which could signal worn bushes or ball joints. The CV joint boot split from the 2021 and 2024 failures risks further damage to the driveshaft if not addressed, so inspect for oil leaks or excessive play at the joint when the vehicle is cold. Brake discs should be examined for pitting, scoring, or binding, especially on the near-side front, where wear has been noted. If the vehicle has been driven regularly, the brakes may require a thorough inspection, including checking for uneven wear or shuddering during braking, which could indicate warped discs or worn brake pads. Beyond mechanical checks, the vehicle’s age and mileage necessitate attention to fluid degradation and structural integrity. Given its age, the engine oil and transmission fluid should be replaced according to manufacturer recommendations, ideally within the last 12 months, as fluid degradation accelerates with time. Inspect the exhaust system for further corrosion, particularly around the middle sleeve and centre sleeve, as previous failures suggest persistent issues. Check the battery for signs of corrosion or poor connections, as the 2009 model may have struggled with electrical systems if left unused for extended periods. Finally, examine the tyres for sidewall perishing, which is more likely in older vehicles, and ensure they are within legal limits and have sufficient tread depth. A thorough test drive should also include checking for exhaust emissions leaks, as the 2024 failure highlighted a major leak that could affect both roadworthiness and fuel economy.