The BMW X3 (2017-21) M40D XDRIVE 5DR SUV 3.0 326 DPFR SS EU6 AUTO8 is a powerful, premium mid-size SUV, combining family-friendly space with a sporty feel. In the UK used-car market, it sits above ordinary family SUVs, competing with fast versions of the Audi Q5 and Mercedes-Benz GLC. mycarcheck.com records show strong interest: 1,249 look-ups covered 526 distinct VINs. Checks indicate an average private-sale value of £31,900, average recorded mileage of 44,000 miles and about 1.2 previous keepers. Average annual mileage is 10,000, useful context when comparing examples; condition and service history still matter. Its six-cylinder diesel engine and four-wheel drive deliver brisk, confident progress, while the automatic gearbox makes everyday driving straightforward. This X3 suits families wanting comfort and luggage space, commuters covering distance, and drivers who value performance without moving to a larger SUV. It is a distinctive, capable all-rounder; check any car’s history and mileage before buying.