Back Otto-siklus Afrikaans محرك بنزين Arabic محرك بنزين ARZ Benzinli mühərrik Azerbaijani Бензінавы рухавік унутранага згарання Byelorussian Бэнзінавы рухавік унутранага згараньня BE-X-OLD Benzinski motor BS Motor de gasolina Catalan Zážehový motor Czech Benzinmotor Danish
A petrol engine (gasoline engine in American and Canadian English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as liquefied petroleum gas and ethanol blends (such as E10 and E85).
Most petrol engines use spark ignition, unlike diesel engines which typically use compression ignition. Another key difference to diesel engines is that petrol engines typically have a lower compression ratio.