Source? In most of Europe (the UK is one exception I know of) diesel costs less at the pump than petrol. The cars themselves cost a little more, but the fuel u

Source? In most of Europe (the UK is one exception I know of) diesel costs less at the pump than petrol. The cars themselves cost a little more, but the fuel usually is cheaper. Excluding hybrids, the current generation of petrol engines (as they historically have done) have a lower fuel economy that diesel. A new VW Passat for example can be configured with a 1.5l petrol engine which achieves 53.3mpg (UK) or a 2.0l diesel engine that achieves 68.9mpg (UK) [0]. Diesel fuel itself has around 15% more energy per volume than petrol, and the properties of its combustion just make it more efficient than petrol, so I don't see how this will ever change, unless a new method of combustion is adopted. I don't really see that happening though, as hybrid and EV technology will likely take over from pure ICE vehicles. [0] https://www.volkswagen.co.uk/app/configurator/vw-gb/en/passat-saloon/31305/38726/s?page=engine https://www.volkswagen.co.uk/app/configurator/vw-gb/en/passa...