The BMW X3 (2017-21) XDRIVE20I 5DR SUV 2.0 184 GPF SS EU6 XLINE PROFESSIONAL MEDIA AUTO8 is a premium mid-sized SUV, offering five-door practicality and a higher driving position. In the UK, it competes with the Audi Q5 and Mercedes-Benz GLC, giving family-car buyers an upmarket alternative to mainstream SUVs. Mycarcheck.com has recorded 246 checks covering 161 different X3s, a useful sample; the average private-sale valuation was £25,600. Recorded cars averaged 30,000 miles, around 8,000 miles a year, and just over one previous keeper. This points to a popular, relatively lightly used choice, though each car’s history should be checked individually. Petrol power, automatic transmission and four-wheel drive suit family trips, commuting and weekends, with comfort and year-round confidence. XLINE PROFESSIONAL trim brings an appealing, well-equipped cabin. The X3 feels composed and polished, with more space and prestige than many compact SUVs, though running costs can be higher than mainstream rivals.