2003 Audi A6 1.9L Diesel · WR03 MLU

Chronic corrosion of the front sub-frame and rear suspension components has become a recurring theme in the testing history, appearing consistently since 2024. While the vehicle passed its last inspection on 21 March 2025, the record shows a pattern of failures requiring immediate rectification before passing, including issues with exhaust emissions, wheel fixings, and critically low brake fluid. An accumulation of 290,759 miles over 23 years represents a high usage rate of approximately 12,642 miles per year. This level of mileage indicates significant cumulative wear on the drivetrain, engine internals, and all primary suspension bushings and bearings. Such extensive use typically accelerates the degradation of rubber components and increases the likelihood of fatigue in structural elements. Attention must be paid to the structural integrity of the front sub-frame and rear suspension, as these have been flagged for corrosion across multiple tests. A physical inspection should focus on the extent of the oxidation to ensure it has not progressed to a structural failure. During a test drive, listen for knocks or clunks when traversing uneven surfaces or during low-speed maneuvers, which may indicate that the corroded suspension components or worn bushings are failing. The braking system requires scrutiny following a failure for low brake fluid and an advisory regarding marginal parking brake efficiency on the nearside rear. Check for a spongy brake pedal or a handbrake that requires excessive travel to secure the vehicle. Given the previous failure for excessive exhaust emissions, observe the exhaust output for excessive smoke and monitor for any loss of power or hesitation under acceleration.