1. Alfa Romeo 4C
Gas mileage: 24 MPG (city) | 34 MPG (highway)
The Alfa Romeo 4C is one of the most fuel efficient cars on the market. With an overall gas mileage rating of 24 MPG (city) and 34 MPG (highway), the Italian car is sold with both a targa top and as a coupe. The base engine of the car is a turbo-four rated at 258 lb-ft of torque and 237 horsepower. The standard transmission for the car is a six-speed automatic, and the top overall speed of the 4C is 160 MPH. The car gives the driver the feeling of hugging the road, and the 4C can go from zero to 60 MPH in only 4.2 seconds.