Is Gasoline Easy to Catch Fire or Diesel

Gasoline is notably more susceptible to ignition.

An essential term in this context is “flash point,” which refers to the lowest temperature at which a liquid can vaporize to form an ignitable mixture in air, under specific testing conditions. The flash point of gasoline can be below 28°C, compared to light diesel, which ranges from 45 to 120°C. Any substance with a flash point below 61°C is classified as flammable.

Igniting diesel with a naked flame proves difficult as its flash point is significantly higher than the ambient temperature of 20°C, rendering diesel relatively resistant to ignition.