The 2020 X3 delivers strong acceleration, agile handling, and premium interior finishes that make it one of our favorites in a dense field of compact luxury crossovers. X3 models with the standard turbocharged four-cylinder strike a smart balance between power and fuel economy. Stepping up to the 335-hp M40i version turns the X3 into a seriously quick crossover. (For those who want their small crossover with an even bigger engine, there's also the 473-hp 2020 BMW X3 M.) The X3's upscale materials and build quality are easier felt than seen; the Volvo XC60, the Mercedes-Benz GLC-class, and the Audi Q5 offer more stylish cabins.