2009 Audi Q5 2.0L Diesel · AC09 MCL

The most recent MOT test on the 2009 Audi Q5 was conducted on 2023-10-17 and passed, though it revealed persistent but non-serious advisories across multiple suspension components and structural elements. While the vehicle has not failed an MOT since 2019, the history shows a pattern of recurring wear-related advisories—particularly in the suspension arms, coil springs, and rear sub-frame—suggesting that while the car remains roadworthy, its structural and moving parts are approaching the limits of their operational lifespan. The two major failures in 2020 and 2021, both due to coil spring fractures, underscore the critical importance of addressing suspension wear before it escalates into catastrophic component failure. These incidents indicate a trend of gradual but consistent deterioration in suspension integrity, which, if left unchecked, could lead to uneven ride quality, handling instability, or even vehicle rollover risk in severe cases. The recorded mileage of 112,620 miles for a vehicle aged 17 years represents a moderate annual usage rate of approximately 6,625 miles per year, which is within the expected range for a car of this age and class. However, the gaps between MOT tests—particularly the two-year intervals between 2020 and 2022—suggest periods of either lighter use or prolonged stationary conditions, which can exacerbate issues like corrosion and fluid degradation. Standing for extended periods without movement accelerates corrosion in sub-frames and suspension components, as seen in the repeated advisories on rear sub-frame corrosion and worn suspension bushes. Additionally, the lack of recent servicing intervals may contribute to wear on brake pads and discs, which have been noted as thin or pitted in multiple MOTs, indicating that brake system maintenance should be prioritised to avoid premature disc warping or pad failure. For a prospective buyer, the most critical areas to inspect during a test drive and physical examination are the suspension system and braking components. Listen for clunks or rattles in the front and rear suspension, especially when the vehicle is driven over bumps or corners, as these could indicate worn or failing suspension bushes, ball joints, or coil springs. Check for uneven tyre wear patterns, which may signal misalignment or suspension issues, and inspect the brake discs for scoring, pitting, or excessive thickness wear—particularly on the rear discs, where advisories have been recorded. The rear coil springs, which have failed in the past, should be visually inspected for signs of elongation or damage; if any are visibly broken or severely corroded, the vehicle’s ride stability and handling will be compromised. Additionally, verify that the brake pads are not excessively thin, as this could lead to overheating, brake shudder, or reduced stopping performance. Beyond the immediate inspection of the suspension and brakes, the buyer should address the broader maintenance needs of the vehicle. Given the age and mileage, the 12V battery should be tested for capacity and charge retention, as older batteries can fail without warning, leading to electrical system failures or starting difficulties. Check the condition of the tyres for sidewall cracking or perishing, which can weaken the tyre structure and compromise safety, especially on older vehicles. Fluid levels, including brake fluid, coolant, and transmission fluid, should be checked and replaced if they have been stagnant for an extended period, as these fluids degrade over time and can cause catastrophic failure if contaminated. Finally, review the service history for the suspension and braking systems, ensuring that any recommended maintenance—such as bush replacements, ball joint servicing, or brake pad renewal—has been documented and performed. If the vehicle has not been serviced in recent years, a comprehensive mechanical inspection by a qualified technician is strongly advised to preempt potential failures and ensure the vehicle remains safe and reliable for the foreseeable future.