Looking for a compact luxury crossover that looks good, practical, and gets a diesel engine under the hood? Why not go for the BMW X3. First introduced way back in 2003, the X3 is now on its third-generation and gets a sleek redesign, inside and out. From its more aggressive design, more high-tech interior, and improved powertrain, the X3 delivers in style, practicality, technologies, and power. Only one engine option is available for the X3, a 2.0-liter TwinPower turbo-diesel that is connected to an eight-speed automatic with all-wheel-drive.