2018 Audi A5 3.0L Petrol · AR10 JAY

The 2018 Audi A5 has achieved a clean MOT result as of 2025-08-30, marking its most recent test with no recorded defects. However, the advisory from the 2024 MOT—indicating nearside rear lower coil spring mounting corrosion and mounting failure—suggests a recurring issue that has not yet escalated to a failure but warrants ongoing attention. While the vehicle has passed subsequent tests, the presence of this advisory implies a gradual wear progression in a critical suspension component, which could compromise ride quality and handling if left unaddressed. The absence of further defects or advisories in the intervening years suggests a stable maintenance trend, but the persistence of this issue demands proactive investigation to prevent potential structural degradation of the mounting bracket or coil spring itself. The recorded mileage of 32,080 miles for a vehicle aged eight years represents a relatively low annual usage rate of approximately 4,010 miles per annum. Such a mileage profile is unusual for a car of this age, particularly if it has been in regular service, as it may indicate prolonged periods of inactivity or light usage. Lower mileage can lead to specific wear patterns, including potential issues related to standing corrosion—particularly in brake systems, suspension components, and the undercarriage—where moisture and stagnant fluids accelerate rust formation. Additionally, the lack of significant mileage accumulation means that consumables like brake pads, tyres, and fluids may not have undergone the same degree of wear as higher-mileage examples. However, the advisory from 2024 underscores that even low-mileage vehicles can suffer from hidden wear, especially in components exposed to environmental conditions over extended periods. Given the advisory concerning the nearside rear coil spring mounting, the prospective buyer should prioritise a thorough inspection of the suspension system during the test drive. Listen for unusual clunking or rattling noises from the rear suspension, particularly when navigating bumps or corners, which may indicate further corrosion or detachment of the mounting bracket. Visually inspect the mounting area for signs of additional cracking, separation, or deformation beyond what was noted in the 2024 MOT. The coil spring itself should be checked for any visible sagging, bulging, or signs of fatigue, as these could signal impending failure. If the mounting appears compromised, the spring may need replacement to restore proper ride height and handling dynamics. Additionally, the buyer should verify that the suspension bushings—including those in the rear subframe—are free of excessive play or wear, as these can also contribute to clunking noises and reduced vehicle stability. For the broader physical assessment, the buyer should conduct a series of practical checks aligned with the vehicle’s age and usage profile. Given the low recorded mileage, focus on identifying any signs of standing corrosion, particularly in the brake system, where rust can cause binding calipers or warped discs. Inspect the brake discs and linings for corrosion, pitting, or uneven wear, and listen for grinding noises when applying the brakes, which may indicate metal-to-metal contact. Check the tyre tread depth and sidewall condition for signs of perishing or cracking, which can weaken the tyre structure and compromise safety. The 12-volt battery should be tested for voltage output when the engine is off and on, ensuring it holds a charge without excessive discharge, as low-mileage vehicles can still suffer from battery degradation if left unused for prolonged periods. Finally, the buyer should verify that the service history is up to date, particularly for fluid servicing such as the brake fluid, coolant, and differential oil, as these fluids degrade over time regardless of mileage. If the vehicle has not been serviced in accordance with the manufacturer’s recommendations, consider scheduling a comprehensive check-up to address any time-based wear or fluid degradation.