2021 Audi Q5 S Line 45 Tfsi Mhev Quat SA 2.0L Petrol · FH21 ABV

The most recent MOT test on the 2021 Audi Q5 S Line 45 TFSI MHEV QUAT SA, conducted on 2026-06-22, resulted in a passing outcome with a single minor failure related to the offside front outer drive shaft constant velocity (CV) boot. This indicates that the boot has reached a critical state of deterioration, where it is no longer effectively sealing the CV joint, which can lead to lubricant loss, increased wear on the joint bearings, and potential failure of the drive shaft under load. The absence of any other failures or advisories in the preceding two years suggests that the vehicle’s overall roadworthiness remains stable, though the CV boot issue is a developing concern that requires immediate attention. The fact that this failure was not present in the 2025 MOT highlights a progression in the condition of the component, implying either accelerated wear or a lack of prior maintenance to address early signs of boot degradation. The recorded mileage of 57,192 miles for a vehicle of this age—approximately 11,438 miles per year—falls within the expected range for typical usage patterns, though the consistency of this rate is not entirely definitive without further historical data. Lower mileage could reflect periods of reduced usage, such as long-term storage or infrequent driving, which may have contributed to standing-related issues like brake corrosion, fluid degradation, or suspension wear. Conversely, higher mileage would suggest more aggressive or frequent use, accelerating wear on consumables like brake pads, suspension components, and drivetrain elements. Given the CV boot failure, it is plausible that the vehicle has been subjected to varying loads or driving conditions that have accelerated the deterioration of this particular component. However, the absence of other high-mileage-related defects in the MOT history does not rule out potential underlying wear in other systems, such as the drivetrain, exhaust, or suspension, which may require closer inspection. For the prospective buyer, the most critical immediate action is to address the failed CV boot, which should be replaced without delay to prevent further damage to the drive shaft, increased vibration, and potential transmission of contaminants into the drivetrain. During a test drive, listen for unusual noises from the front wheels, particularly a grinding or clunking sound when accelerating or turning, which may indicate a failing CV joint. Inspect the boot visually for any signs of tearing or exposed CV joint components. Additionally, check for uneven tyre wear, which could suggest misalignment or suspension issues exacerbated by the CV boot failure. Beyond this, conduct a thorough inspection of the vehicle’s suspension, focusing on the front and rear suspension bushes, coil springs, and struts, as these components often wear concurrently with CV joints. Verify that all fluid levels are topped up, particularly the brake fluid, which should be checked for contamination or bubbles, as thin brake pads can lead to reduced braking performance and potential corrosion of brake discs. In terms of broader maintenance and physical checks, given the vehicle’s age and mileage, the buyer should also examine the tyres for signs of sidewall cracking or perishing, which can compromise structural integrity and safety, especially in older vehicles. Inspect the brake system for signs of corrosion on the discs or binding calipers, which can occur when the vehicle stands for prolonged periods without use. Check the 12V battery and associated electrical connections for signs of corrosion or poor contact, as standing vehicles are particularly susceptible to battery drain and electrical gremlins. Finally, consider the calendar-based servicing of fluids such as the engine oil, differential fluid, and coolant, as these can degrade over time regardless of mileage. Review the service book for any recorded intervals or reminders for these fluids, and ensure that the vehicle has been serviced according to the manufacturer’s recommendations. Lastly, a professional inspection by a qualified Audi specialist or independent mechanic is advisable to assess the full condition of the drivetrain, exhaust system, and structural integrity, particularly given the CV boot failure and the vehicle’s age.