1998 Audi A4 1.9L Diesel · S891 AAN

The most recent MOT on 2025-10-29 showed the vehicle passed with three notable issues: an oil leak (not excessive), slight play in the offside front upper suspension arm, and a severely deteriorated nearside front outer drive shaft joint constant velocity (CV) boot. These findings align with a pattern of recurring mechanical concerns, particularly involving suspension components and drivetrain elements. A consistent issue over multiple MOTs is the deterioration of CV boots, which were described as "severely deteriorated" in 2024 and 2025, and "split or insecure" in 2023. This suggests ongoing exposure of critical drivetrain parts to dirt and debris, which could accelerate wear if left unaddressed. Oil leaks, though classified as "not excessive," have appeared in five of the last six MOTs, indicating a persistent but manageable issue. The trend of suspension-related defects shows some stability. Slight play in suspension arms and wheel bearings was noted in 2023, and while the 2025 MOT repeated the suspension arm issue, no new suspension failures were recorded. However, the 2023 MOT highlighted multiple wheel bearing plays and shock absorber misting, which may indicate gradual wear in these components. The vehicle’s mileage of 270,406 miles is roughly in line with its 28-year age, averaging ~9,657 miles annually. This suggests moderate use rather than heavy wear, but higher mileage increases the likelihood of component fatigue, particularly in high-mileage vehicles.