The BMW Z4 (2003-09) 2DR ROADSTER 2.2I 170 SE AUTO is a two-seat, open-top sports car rather than a practical family runabout. In the UK used-car market, it offers an affordable route into classic BMW roadster ownership, with a smart, distinctive look and automatic convenience. Mycarcheck.com has recorded 235 checks covering 82 different VINs, a useful sample of cars shoppers have researched. Its data puts the average private-sale valuation at about £2,000, while average recorded mileage is 97,000 miles. The cars average just 2,000 miles a year but have had around six previous keepers, so service records and ownership history deserve a close look. Couples or solo drivers may typically enjoy it for weekend trips, but it is not a family car. Against the Mazda MX-5, the Z4 feels more premium and substantial; its six-cylinder engine and automatic deliver relaxed open-air motoring, though it is less economical than a daily hatchback.