Under the hood, the Mazda CX-3 comes with a standard 146-horsepower 2.0-liter inline-four-cylinder engine paired with a smooth-shifting six-speed automatic transmission that channels its power. This engine averages an impressive 34 miles per gallon on the highway, making the CX-3 one of the more fuel-efficient models in its segment. All-wheel drive is also available for better handling and control on adverse terrains.