Gasoline exhaust gases burn in the range of 1,000 to 1,400 degrees Fahrenheit. In comparison, diesel engines burn at a temperature range of 500 to 800 degrees Fahrenheit, according to WC Engineering.
Exhaust gas temperature is used to measure an engine's health, and it is important to the evaluation of the catalytic converter of an internal combustion engine. When a gasoline engine reaches its exhaust gas temperature limit, it must have specific maintenance in order to keep it running smoothly. Compared to diesel, gasoline burns hotter, is quicker to ignite and has a lower air-to-fuel ratio, according to WC Engineering.