The BMW X5: From a Bold Vision to a Driving Legend in 25 Years Category Cars The BMW X5 is one of the most successful and popular models in the history of the German automaker. Since its debut in 1999, the X5 has sold over 2.4 million units worldwide, making it the best-selling BMW of all time. The X5 is also a... By Car Thermostats, 16 January, 2024