6. 2014 Toyota Prius v
No list of fuel efficient cars would be complete without an entry from the Prius family. The Prius v is actually the only Prii (Toyota’s plural term for the Prius) model that has earned a five-star safety rating from NHTSA. It features a 1.8-liter hybrid powertrain that provides 98 hp and 105 lb-ft of torque. Priced from $27,560, the longer Prius sports wagon-like hatchback style while getting 44 MPG in the city and 40 MPG on the highway, good for a 42-MPG combined rating.