The 2019 Toyota Prius now comes with optional all-wheel-drive. AWD is a key feature if you live in a climate that has rough weather. Buying a Toyota Prius is also doing a favor for the environment. Why? It is one of the world's most efficient mass produced vehicles. Prius owners report on Fuelly that they get about 45 MPG in real-world driving. This is useful when fuel prices are high.