What is fuel mileage 7.3 diesel?

The fuel mileage of a 7.3L diesel engine, commonly found in Ford Super Duty trucks from the late 1990s to early 2000s, typically ranges from 12 to 18 miles per gallon (MPG), depending on factors like load, driving conditions, and maintenance. In highway driving conditions, many owners report achieving closer to 18 MPG, while city driving may yield lower figures. Performance can also be influenced by modifications and the specific vehicle configuration. Overall, the 7.3L diesel is known for its durability and fuel efficiency relative to its size and power.