We purchased our X5 with approx. 53,000 miles under BMW's Certified Pre-Owned program and bought the service package to 100,000 miles. The X5 has been great. We live in Denver and drive to Vail almost every weekend. Average MPG is 19.2, not bad for 300+ HP, 5,000# car. Run Pirrelli snows in winter and Yokahoma Geolander in summer. The X5 is remarkably capable off road - Hill Descent Control is very impressive. The only funny part is the looks we get from other SUV drivers. Trips to the dealer for unscheduled service have been minimal and not expensive.
Heated steering wheel and seats in winter. Icy A/C in summer. x-Drive year-round. Transmission is brilliant when descending in the mountains.