* On-road diesel: Contains a higher concentration of cetane, which helps the fuel ignite more easily and improves engine performance.
* Off-road diesel: Contains a lower concentration of cetane and may also contain additives that help reduce emissions.
Sulfur Content
* On-road diesel: Has a sulfur content of 15 parts per million (ppm) or less.
* Off-road diesel: Can have a sulfur content of up to 500 ppm.
Taxation
* On-road diesel: Is taxed at a higher rate than off-road diesel.
* Off-road diesel: Is taxed at a lower rate than on-road diesel, but it is only allowed to be used in off-road vehicles.
Use
* On-road diesel: Is used in vehicles that are driven on public roads.
* Off-road diesel: Is used in vehicles that are not driven on public roads, such as tractors, construction equipment, and generators.
