2009 Audi A4 2.0L Diesel · RO09 NFL

The most recent MOT test on 2026-01-20 returned a passing result, though it included several persistent advisories that warrant careful attention. The overall maintenance trend over the past five years is stable, with no major failures beyond the single incident in 2021, which involved a fractured rear coil spring on the offside side. The advisories—particularly those related to suspension bush wear, brake binding, and tyre perishing—suggest that while the vehicle remains roadworthy, there are recurring signs of wear that may indicate underlying issues if not addressed. The presence of multiple advisories on the same components in consecutive tests highlights a pattern that could escalate if left unchecked, especially given the vehicle’s age and accumulated mileage. The recorded mileage of 91,574 miles for a 2009 A4 represents an unusually low annual usage rate of approximately 5,387 miles per year, which is far below the industry average for vehicles of this age and model. Such low mileage often correlates with prolonged periods of inactivity, which can exacerbate issues like corrosion, fluid degradation, and component stiffness. The most critical consequence of low mileage in this context is the potential for standing corrosion, particularly in brake systems, suspension linkages, and exhaust components, where moisture and lack of movement accelerate rust formation. Additionally, fluids such as brake fluid, coolant, and transmission oil may have degraded over time due to prolonged exposure to ambient conditions rather than regular servicing. For a prospective buyer, the most urgent inspection should focus on the suspension and braking systems, given the advisories and the risk of progressive wear. During a test drive, listen for unusual clunks or rattles in the suspension, particularly when navigating bumps or corners, as these may indicate further bush degradation or loose suspension arms. Check for uneven tyre wear patterns or excessive vibration at speed, which could signal misalignment or binding calipers. Inspect the rear coil spring for any signs of further deterioration or sagging, as the 2021 failure suggests this component may be nearing the end of its serviceable life. Additionally, verify that the brake system operates smoothly without binding or pulsation, and ensure there are no leaks around the brake calipers or master cylinder. Beyond mechanical checks, the vehicle’s age and low mileage make it susceptible to age-related wear that is not always evident from mileage alone. Examine the tyres for sidewall cracking or perishing, which can compromise structural integrity and safety, especially if the vehicle has been stationary for extended periods. Check the battery terminals for corrosion and ensure the 12V system holds a charge when static, as prolonged inactivity can lead to battery failure or parasitic drain issues. Fluid levels should be topped up to manufacturer specifications, with particular attention to brake fluid, which can absorb moisture and degrade over time, even with low mileage. Finally, verify that the service history includes time-based maintenance such as oil changes, coolant flushes, and suspension component inspections, as these are critical for a vehicle of this age. If the service book is incomplete or missing, consider arranging a thorough mechanical inspection to confirm the vehicle’s true condition before purchase.