2015 BMW X3 2.0L Diesel · LB64 BWH

The 2015 BMW X3 passed its most recent MOT on 9 February 2026 at 191,171 miles, just over four months ago. The maintenance trend is broadly stable but shows a persistent pattern of minor advisories rather than resolving faults. The tester flagged a rear oil leak from the differential seal and worn front and rear brake discs, all noted as not excessive. These advisories have recurred across multiple tests, suggesting the previous owner tolerated seepage and surface wear rather than proactively addressing underlying causes. No dangerous or major defects were recorded, so the vehicle remains roadworthy, but the pattern points to a reactive rather than preventative maintenance approach. The annualised mileage of roughly 17,379 miles is high for an eleven-year-old SUV, indicating sustained, intensive use. Mileage accumulation accelerated notably between the January 2023 test at 143,894 miles and the February 2024 test at 162,827 miles, a gain of 18,933 miles in thirteen months. The pace then eased slightly to around 15,641 miles over the following year before climbing again to 191,171 miles by February 2026. The record shows no significant gaps in testing continuity, with annual tests completed consistently each February or late January, which supports the high-usage profile. The recurring differential seal oil leak, flagged in four of the five recorded tests, warrants close inspection. A buyer should examine the differential housing, axle seals, and underbody for fresh wetness, corrosion, or pooled fluid. Worn brake discs appearing repeatedly on both axles at high mileage suggest the vehicle has endured sustained heavy braking loads, possibly from motorway or towing use. Inspect disc thickness, lip wear, and pad condition in person, and check for uneven scoring or heat cracking. The windscreen chip noted in 2025 and stone chip in 2023 indicate the screen has taken repeated impacts; verify whether the current screen is original or replaced and whether any chips sit within the driver's critical vision area. Given the high mileage and persistent seepage, a thorough underbody inspection is advisable. Check rear suspension bushes, coil springs, and shock absorbers for wear or corrosion consistent with the mileage. Examine the exhaust system for leaks or deterioration, particularly around joints and mounting points. The clean test in February 2022 shows the vehicle is capable of passing without advisories, so the return of wear items in subsequent years likely reflects the intensity of use rather than inherent neglect. A pre-purchase inspection by a qualified technician, focusing on the drivetrain, braking system, and structural underside, would provide the clearest picture of long-term reliability.