2021 BMW X6 XDRIVE40D M Sport Mhev Auto 3.0L Electric diesel · RG04 LEE

The most recent DVSA MOT test for this 2021 BMW X6 was conducted on 3 March 2026 and resulted in a pass with no defects or advisories recorded, which represents the cleanest possible outcome. The preceding test on 23 July 2025 also returned a clean pass. The earlier tests from October 2024 are less reassuring: a major failure was issued on 3 October 2024 due to a nearside rear tyre with a cut deep enough to reach the ply or cords, alongside multiple advisories for tyre condition, including a nail in the offside rear tyre, an offside rear cut not reaching the cords, and both offside tyres worn close to the legal limit. The following day, a re-test pass was issued but the offside front tyre wear advisory remained. Taken together, the maintenance trajectory appears to have stabilised. Two clean passes in 2025 and 2026 indicate the previous tyre issues were addressed rather than being symptomatic of neglect, though the cluster of tyre-related advisories in late 2024 suggests the vehicle may have been running tyres close to or at the end of their service life at that point. The recorded mileage of 45,115 miles over five years equates to an annual average of roughly 9,023 miles, which is broadly typical for a vehicle of this age and class. There are no obvious gaps or sudden surges in the recorded mileage pattern across the MOT history, suggesting consistent use rather than long periods of standing or extreme high-mileage accumulation. This level of usage is generally favourable for mechanical longevity on a diesel MHEV powertrain of this calibre, as it avoids the dual risks associated with very low annual mileage, namely oil seal drying, premature 12V battery failure, and DPF blockage from insufficient exhaust temperature, while also keeping wear on the timing chain, turbocharger, and dual-mass flywheel proportionate to the vehicle's age. The diesel particulate filter, AdBlue system, and mild-hybrid 48V electrical components should still be considered as age-related service items even at this moderate mileage. Given the clean recent MOT record but the cluster of tyre advisories in late 2024, a prospective buyer should begin with a thorough tyre inspection. Verify the age codes on all four tyres and any spare, as even a lightly used tyre over five years old can suffer sidewall perishing and reduced grip despite apparently adequate tread depth. Look for uneven shoulder wear, which can indicate suspension geometry misalignment from worn front or rear bushes, or simply from kerbing on a heavy SUV of this size. Inspect the sidewalls carefully for cracking, bulging, or impact damage. On a test drive, listen for any clonking or knocking from the front suspension over speed humps or rough roads, which on the X6 could indicate worn anti-roll bar drop links, control arm bushes, or top mount failures common to higher-mileage BMWs of this generation. Beyond the tyres, several age-and-mileage-appropriate checks are warranted despite the clean MOT history. The 12V battery in the mild-hybrid electrical architecture is particularly vulnerable to early failure on vehicles used for short journeys or left standing, so its date stamp and state of health should be verified, ideally with a diagnostic read-out. Brake discs on a standing vehicle, even with relatively modest mileage, are prone to corrosion and binding calipers; on the test drive, check for any pulling to one side under light braking, shudder through the steering wheel, or a grinding sensation that could indicate a seized caliper slider. Inspect all four wheels for signs of corrosion around the rims and verify the brake fluid and coolant have been changed in line with manufacturer intervals, as these are time-based rather than mileage-based services. Given the diesel powertrain, confirm the most recent service stamp shows a diesel particulate filter regeneration cycle has been completed, check for any soot contamination around the exhaust tailpipe, and verify the AdBlue system is functioning correctly with sufficient fluid. A pre-purchase inspection on a ramp remains strongly advisable given the complexity and replacement-part cost of this model.