1. 2016 Mercedes-Benz E-250 BlueTEC
Gas mileage: 42 MPG (highway)
The Mercedes-Benz E-250 BlueTEC luxury car is one of the most fuel efficient on the road today. With a starting price just over $52,000 USD, the five passenger luxury sedan gets an overall gas mileage rating of 28 MPG (city) and 42 MPG (highway). The stock engine in the car is a 2.1 turbo-diesel inline four-cylinder rated at 195 horsepower and is coupled to a seven-speed automatic transmission. The car can go from zero to 60 MPH in 7.9 seconds, and includes standard luxury features such as heated seat, Bluetooth, and the latest in tech and safety features from the German auto manufacturer. The top overall speed of the car is governor limited to 129 MPH.