2021 BMW X7 M50I Auto 4.4L Petrol · XHO 67

The most recent MOT, carried out on 28 August 2025, was passed with no recorded defects, following an earlier clean pass on 3 October 2024. The absence of any advisory or failure items across two consecutive annual tests indicates a stable maintenance regime and suggests that the vehicle has been kept in good mechanical order, with no emerging faults that have yet required remedial attention. At five years old the X7 records 28 701 miles, equating to an average of roughly 5 740 miles per annum. This figure sits well below the typical UK average of 10‑12 000 miles per year for a vehicle of this class, implying either predominantly short‑haul or occasional use, or periods of prolonged storage. Low utilisation reduces cumulative wear on the engine, transmission and suspension components, but can also expose age‑related deterioration such as tyre sidewall perishing, battery sulphation and the gradual hardening of rubber bushings that are not exercised regularly. Given the low mileage and clean MOT history, the buyer should focus on age‑related checks. Inspect all four tyres for sidewall cracking, dry rot or uneven wear that may signal a mis‑aligned suspension that has not been exercised; verify that the tread depth meets the legal minimum and that the tyre age, indicated by the four‑digit DOT code, is not beyond six years. Examine the 12‑volt battery for signs of sulphation or reduced cranking power, and consider a load test, especially if the vehicle has been stored for extended periods. Assess the condition of the brake discs and pads – even with modest use, discs can develop surface corrosion or uneven pad wear if the car has sat idle, so look for scoring, rust patches or a pulsating pedal during a gentle stop. Finally, confirm that all fluid reservoirs – engine oil, coolant, brake fluid and power‑steering fluid – have been refreshed in accordance with BMW’s time‑based service intervals, as fluids can degrade chemically over years regardless of mileage. A thorough visual inspection of the under‑body and wheel arches for any signs of corrosion, especially around the front subframe, rear suspension mounts and exhaust hangers, is advisable. Verify that the service book contains stamps for scheduled maintenance, including any software updates or recall work that BMW may have issued for the M50i powertrain. During a test drive, listen for any clunking or squeaking from the suspension bushes, coil springs or control arms, and watch for any hesitation or surging from the turbocharged V8 that could hint at a need for a fuel‑system cleaning or ignition‑coil inspection. Ensuring these points are addressed will give a prospective buyer confidence that the vehicle’s low‑mileage advantage is not offset by age‑related wear.