An internal combustion engine works by igniting a mixture of fuel and air in the cylinder, creating an explosion that moves the piston and generates mechanical energy. A distinction is made between petrol and diesel engines, which work slightly differently.
Internal combustion engines still account for a large proportion of newly registered vehicles. This is likely due to their long range and lack of dependence on charging stations. The international petrol station network is very dense, so you don’t have to worry about finding somewhere to refuel.
However, their high CO2 emissions are a serious disadvantage. Car manufacturers are slowly but surely transitioning to more ecological drive solutions. It is likely that the sale of conventional cars will be more strictly regulated or banned altogether in the near future in order to achieve climate targets.