2021 BMW 840D Xdrive M Sport Mhev Auto 3.0L Electric diesel · CT21 GGA

The 2021 BMW 840d xDrive M Sport MHEV presents a highly stable and exemplary maintenance trend, evidenced by a completely defect-free MOT record. The most recent test on 10 July 2025 at 36,161 miles passed without a single defect or advisory, mirroring the flawless result recorded on 8 April 2024 at 28,983 miles. This consistent pass rate indicates a vehicle that has been diligently maintained, with no emerging mechanical or structural faults requiring remedial action. The powertrain, braking systems, and structural integrity appear entirely sound based on the official DVSA records. The mileage accumulation aligns perfectly with the vehicle's age, reflecting light, typical use rather than sustained high-speed touring or severe short-hop driving. Between the April 2024 and July 2025 tests, the odometer advanced by 7,178 miles over a fifteen-month interval, translating to an annualized rate of roughly 5,700 miles during that specific period. This lower-than-average annual mileage suggests the previous owner utilized the vehicle for moderate-distance commuting or leisure, sparing the drivetrain from excessive wear. Given the current date of July 2026, the vehicle is precisely one year out of its latest MOT, meaning a prospective buyer should anticipate the actual mileage sits closer to 42,000 miles. Despite the pristine MOT history, a pre-purchase inspection must focus on the inherent wear characteristics of a heavy, high-performance diesel saloon operating on a low-mileage cycle. Extended periods of standing or short journeys can cause glazing on brake discs and binding calipers, issues that might not trigger an MOT failure but compromise driving dynamics. Inspect the condition of the suspension bushes and coil springs for perishing, as low-mileage vehicles often suffer from rubber deterioration due to age rather than use. Verify the exhaust emissions system, particularly the diesel particulate filter and MHEV battery health, to ensure the hybrid system regenerates correctly. Structural rust is absent from the records, yet a physical inspection of the underbody and subframes remains prudent to confirm no corrosion has developed since the last test.