Introduced as part of the first generation of BMW's X series, the 2005 BMW X5 is a luxury mid-size SUV famously known for its superior ride and handling. BMW offers three different engine options: a 225-hp 3.0-liter inline-six, a 315-hp 4.4-liter V8, and a 4.8-liter V8 engine that delivers 355 horsepower in the performance-tuned X5 4.8is. All engines are paired with a six-speed automatic transmission, and all-wheel drive is standard across the line. Inside, the 2005 X5 is outfitted with upscale materials, power-adjustable front seats, and a sunroof. Key safety features include standard stability control and optional rear-seat side airbags. While the 2005 X5 lacks some of the high-tech features found in more recent BMWs, it notably offers an optional navigation system.