Non-hybrid cars can achieve high miles per gallon (mpg) ratings. Some examples include the 2015 Mitsubishi Mirage hatchback with 44 mpg on the highway, the 2016 Dodge Dart Aero and Mazda3 with 41 mpg, and the Toyota Corolla LE Eco with 42 mpg. Diesel-powered cars like the 2016 Volkswagen Golf TDI can achieve up to 45 mpg on the highway.