1. 2016 Dodge Ram 1500 EcoDiesel
Highway gas mileage: 29 MPG
The 2016 Dodge Ram 1500 EcoDiesel is one of the most fuel efficient trucks on the road today. The vehicle is powered by a 3.0 liter diesel V-6 engine that is rated at 240 horsepower and 420 lb-ft of torque. The overall gas mileage rating for the truck is 21 MPG (city) and 29 MPG (highway). The truck is sold stock with an eight-speed automatic transmission, and consumers may choose between the standard rear-wheel or optional four-wheel drive when buying the auto new. When the Ram 1500 EcoDiesel is equipped for towing, its max tow rating is 10,640 lbs with a maximum payload of 1,890 lbs.