The X5 was BMW first ever SUV when it was launched in 1999. BMW “sport activity vehicle” is now in its second generation and grew in size to offer third-row seating. When it comes to safety, the BMW X5 joins the smaller X3 as the Insurance Institute for Highway Safety (IIHS) top safety picks for 2008. During the first four years of ownership, BMW X5 drivers receive a 50,000-mile warranty and $0 maintenance program in addition to an unlimited mileage roadside assistance. The BMW X5 gets an estimated 19-21 mpg on the highway.