The Mitsubishi Outlander takes regular unleaded pump gas with its 2.5-liter four-cylinder engine. This engine will provide 181 horsepower and sip that regular fuel. Specifically, this model delivers up to an EPA-estimated fuel economy of 24 mpg city / 31 mpg highway3 for the 2022 model year in the ES, SE, and SEL trim with 2WD. For 2022 models with Super All-Wheel Control (S-AWC), you'll find up to an EPA-estimated fuel economy of 24 mpg city / 30 mpg highway.3