The 2015 BMW 5 Series is a luxury sport sedan that blends performance with comfort, offering multiple engine options ranging from a 240-hp turbocharged 4-cylinder to a 445-hp twin-turbo V8. It features a refined ride, quiet cabin, and available all-wheel drive, along with modern tech and safety features. Different trims and a diesel option are available to cater to various needs for power, efficiency, or cargo flexibility.