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How cars ‘waste’ two thirds of their fuel

March 13, 2023


With the rise in gas prices showing no signs of abating, it seems like an appropriate time to ask ourselves: are our cars not efficient enough? Europe has decided to ban the production of new combustion engine-powered vehicles by 2035, but most passenger vehicles currently on roads in France and across the globe still fall under this category.

Their engines operate by burning petrol or diesel fuel and converting the resulting thermal energy into mechanical energy, which is used to propel the vehicle. At most 50% of the power supplied is converted into mechanical energy, but the remainder is dissipated as heat.

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