Diesels, gasoline, hybrids, rechargeables: which consumes the least?

Diesels, gasoline, hybrids, rechargeables: which consumes the least?

At a time when fuel prices are breaking records, each liter of unleaded or less diesel represents a significant saving. However, all the engines on the same vehicle are not equal, very far from it. We even noted big differences, up to three litres, with equivalent bodywork and equipment. Be careful with the choice, despite the enticing promises that are often not kept! And it’s not just the wallet that’s impacted… Because consumption is strictly correlated to CO emissions2. They are therefore fundamental for the reduction or increase in greenhouse gas emissions. They also dictate the amount of the penalty.

Plug-in hybrids, it depends on the use

After being strongly encouraged by the public authorities since the two oil shocks of the 1970s because it reduced consumption, diesel is vilified today, following the Volkswagen Dieselgate scandal (in 2015). It even arouses such political and media hatred that zealous city councilors like Anne Hildalgo in Paris have promised to ban it from 2024. And this, even though it does not emit more pollutants than the corresponding gasoline engines since the last Euro 6c depollution standards from 2017-2018 and especially Euro 6d (2020-January 2021). What about hybrids? These are petrol cars equipped with a more or less powerful auxiliary electric motor: the voltage of the electrical circuit is most often 48 Volts in the case of very light hybridization, 200 Volts on average on a fully hybrid car like the Toyota Corolla allowing a range of 2 km in zero emission mode, and downright 350 Volts on a rechargeable Toyota Rav4 type allowing around fifty km in zero emission. In short, not easy to find!

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