2021 Audi Q4 E-Tron S Line 35 Electric · CU71 MLO

The most recent MOT test on 2026-04-20 resulted in a clean pass, but the vehicle’s maintenance record reveals a pattern of persistent, though not worsening, advisories that warrant careful attention. Over the past three years, the Q4 E-TRON S Line has consistently received advisories related to tyre wear and suspension components, with no failures recorded that would have necessitated immediate rectification. The offside front anti-roll bar linkage ball joint showing slight play is a recurring issue, indicating potential long-term wear in the suspension’s lateral stability linkage, which could develop into a binding or misalignment problem if left unaddressed. The nail in the offside rear tyre and the tread wear advisories—particularly the nearside rear tyre nearing the legal minimum and the offside rear inner edge wear—suggest that the vehicle has undergone uneven loading or directional stability issues, which could exacerbate tyre degradation over time. While the MOT history does not show a deterioration trend, these advisories point to areas where proactive maintenance is advisable to prevent premature component failure or compromised handling. The vehicle’s recorded mileage of 23,351 miles at a time when it is approximately five years old represents a relatively low annual usage rate of around 4,670 miles per year, which is notably below the average for a vehicle of this age and model. Such low mileage can be indicative of either light operational use or extended periods during which the vehicle has been stationary, both of which introduce distinct wear patterns. Prolonged idling or standing can lead to issues such as brake disc corrosion, caliper binding, and fluid degradation in the cooling and hydraulic systems, as stagnant fluids accelerate corrosion and reduce lubrication effectiveness. Conversely, lower mileage may also mean that consumables like brake pads, suspension components, and tyres have not experienced the same degree of wear as higher-mileage counterparts, but this does not absolve the need for thorough inspection, especially given the advisories noted in the MOT history. Given the advisories on the anti-roll bar linkage ball joint and tyre wear, the prospective buyer should prioritise a detailed inspection of the suspension system to confirm the stability and integrity of the ball joint and associated components. During a test drive, listen for unusual clunking or rattling noises from the front suspension, particularly when cornering or over bumps, as these could indicate further wear or detachment of the ball joint. The offside front anti-roll bar linkage is a critical component for maintaining wheel alignment and handling dynamics; any increased play or binding could lead to uneven tyre wear or steering feedback. Additionally, check for excessive tyre noise or vibration, which may signal misalignment caused by the suspension issue. For the tyres, verify that the wear patterns align with the advisories—particularly the inner and outer tread wear—which could imply directional stability problems or camber misalignment. If the ball joint is confirmed to have excessive play beyond the MOT-advised limits, it should be replaced promptly to prevent further suspension damage. Beyond the immediate advisories, the buyer should conduct a comprehensive physical inspection of the vehicle, focusing on areas prone to long-term wear or standing-related issues. Given the vehicle’s age and the low mileage, inspect the tyres for signs of sidewall perishing or cracking, which can compromise structural integrity and safety, especially if the vehicle has been stationary for extended periods. Check the brake system for signs of corrosion on the discs or calipers, particularly on the near-side rear where the tyre was worn to 2.7mm, as standing fluids can cause rust buildup and binding. Verify the fluid levels in the cooling system, brake fluid reservoir, and power steering reservoir, ensuring they are topped up and free from contamination. The 12V battery should be tested for charge capacity and clean terminals, as prolonged disuse can lead to sulphation or corrosion. Lastly, since the vehicle has not undergone a service within the last 12 months, consider scheduling a professional inspection to confirm that time-based maintenance tasks, such as fluid replacements (oil, coolant, brake fluid) and filter changes, have been attended to. The Q4 E-TRON’s electric drivetrain components, while robust, still require regular checks for software updates and electrical connections, particularly if the vehicle has been stationary for extended periods.