The BMW X3 is a small luxury SUV positioned. It offers seating for five and strikes a careful balance of sportiness, comfort and utility. If you like the interior design and tech features of your 3 Series sedan but need more space for road trips, chances are you'll like the X3. The more powerful engine available in the X3 M40i is tempting for its addictive acceleration, but the base turbo-four should provide more than adequate thrust for most.