- Small tractors: 10 to 20 gallons
- Medium tractors: 20 to 50 gallons
- Large tractors: 50 to 100 gallons or more
Some high-horsepower tractors used for heavy-duty agricultural applications may have fuel tanks that hold even more diesel, up to several hundred gallons.
The fuel tank capacity of a specific tractor model can usually be found in the owner's manual or on the manufacturer's website.