2004 Audi A4 1.9L Diesel · YH04 ABN

The latest recorded MOT test for this Audi A4 resulted in a pass, though it followed a dangerous failure earlier in the same month. The maintenance trend indicates that while the most critical safety issues, such as the damaged tyre and major suspension component failures, were addressed to achieve the pass, the vehicle is showing signs of progressive wear within the suspension system. The transition from multiple major failures in the ball joints and anti-roll bar linkages to a single advisory regarding slight play in the nearside front upper suspension arm ball joint suggests that while the vehicle is currently roadworthy, the suspension subsystem is entering a period of cumulative degradation that will require ongoing attention. With 148,925 miles covered over 22 years, the vehicle has averaged approximately 6,769 miles per year. This level of usage is considered moderate and consistent for a vehicle of this age, suggesting it has not been subjected to the extreme wear of high-mileage intensive use, nor the potential degradation associated with long periods of inactivity. Mechanically, this implies that the engine and drivetrain components have likely undergone regular, predictable wear cycles. However, at this mileage and age, the primary concerns shift from engine longevity to the integrity of perishable components such as rubber bushings, seals, and various suspension elements which naturally degrade over time regardless of distance travelled. Prospective buyers should pay close attention to the advisory regarding the nearside front upper suspension arm ball joint. During a test drive, listen specifically for any knocking, clunking, or rhythmic tapping sounds when driving over speed bumps or uneven road surfaces, as these are primary symptoms of excessive play in the ball joints. You should also check for any steering wander or a vague feeling through the steering wheel, which can indicate broader suspension wear. Given the previous failure involving anti-roll bar linkages, inspect the front end for any signs of excessive movement or noise when the vehicle is rocked side-to-side while stationary. Furthermore, due to the previous dangerous failure involving a tyre with damaged cords, a thorough inspection of all four tyres is mandatory. Check for uneven tread wear patterns, which could indicate that the suspension geometry is compromised, and inspect the sidewalls for any signs of perishing, cracking, or bulging. Given the vehicle's age, you should also examine the brake discs for heavy corrosion or pitting and check the underside for signs of fluid leaks from shock absorbers or engine seals. Finally, verify the service history to ensure that time-based maintenance, such as brake fluid changes and coolant flushes, has been performed to prevent age-related component failure.