The BMW X3 is one of the automaker's most popular vehicles. Slotted between the pint-sized X1 and the larger X5, the X3 is second only to the 3 Series sedan in name recognition and has been around for 20 years in the US. The first X3 debuted at the 2003 Frankfurt Motor Show before going on sale in the months thereafter, and in 2008, the 500,000th X3 rolled off the production line.
