A fuel economy rating of 54 mpg city (4.3 l100 km), 50 mpg highway (4.7 l100 km), and 52 mpg combined (4.5 l100 km) is one of the potential answers. More straight to the point, $24. 200 buys you the entry-level Prius Two model. Step up to the Prius Two Eco ($24. 700) and youre looking at added frugality and more in-car technology.