The Subaru Impreza proves that you don't have to pay a fuel efficiency penalty when choosing the security of standard all-wheel drive. The Impreza's 2.0-liter, 148 horsepower four-cylinder engine is most frugal when matched with its available continuously-variable automatic transmission, although a five-speed manual is included free of charge. The compact Subaru can be had in both sedan and hatchback editions, with the latter offering respectable cargo space, and either version of the car is an excellent winter warrior.