The Imprezas two-liter boxer engine makes just 148 hp, and the extra weight of the AWD system means that the car isn’t the most efficient vehicle on this list, getting 25 mpg in the city, 34 mpg on the highway and 28 mpg combined. The base Subaru Impreza features Bluetooth connectivity and an handy trip computer which gives you all the details on your driving habits. Read our Subaru Impreza review and checkout the specs too.