2020 Audi SQ7 TDI Mhev Quattro Auto 4.0L Diesel · ML70 KNK

The SQ7 presents a stable and improving maintenance trend, culminating in a clean pass on 10 November 2025 at 36,371 miles with zero defects recorded. That result is a significant step up from the 2024 test, where the tester flagged a severely deteriorated nearside front outer CV joint boot alongside a child seat obstruction masking the nearside rear adult belt. Both items appear to have been addressed before the 2025 retest, suggesting the previous owner corrected rather than ignored the faults. No recurring defects have reappeared across the three-test window, and the vehicle has not failed an MOT during the period covered by this record. The mileage accumulation is consistent and unremarkable for a six-year-old performance SUV. The car covered roughly 6,330 miles between November 2023 and November 2024, then slowed to approximately 5,716 miles in the following twelve months through November 2025. That slight reduction in annual mileage could indicate a change in ownership pattern or commuting use, but it does not raise any red flags. The overall average of around 6,062 miles per year sits squarely within typical use for the age, meaning wear on consumables and mechanical components should be proportionate rather than excessive. Despite the clean 2025 result, the 2024 advisory on the nearside front CV boot warrants a close physical inspection. A severely deteriorated boot typically allows grease ejection and ingress of road debris, which accelerates joint wear and can lead to clicking under load or sudden failure. A buyer should check for play in the driveshaft, inspect the boot for fresh damage or recent replacement, and verify the inner joints are free of excessive movement. The child seat restriction on the nearside rear belt also means the adult restraint was not fully examined in 2024; a manual check of the belt's retraction, locking mechanism, and webbing condition is advisable. Beyond the flagged items, the SQ7's air suspension, braking system, and exhaust after-treatment components deserve attention given the vehicle's performance brief and weight. The clean 2025 pass provides reasonable confidence, but a pre-purchase inspection should focus on suspension bushes, coil spring integrity, and any signs of corrosion on subframes or brake lines, particularly if the car has spent time in areas with heavy road salting. Brake disc thickness and pad condition should be measured against wear limits, as the car's mass and torque place higher demands on the braking system than a standard family SUV.