The diesel engine is like a religion in Europe. It was first promoted by governments as a way to fight back against the OPEC oil embargoes of the 1970’s. Since then, taxes on diesel fuel have been lower than those on gasoline. Coupled with other economic incentives, the lower cost of driving means that 70% of all diesel powered cars manufactured each year are sold in Europe.
The great Volkswagen cheating scandal of 2015 put a huge dent in diesel’s reputation. Volkswagen got caught, but it soon came out that virtually all the other companies who sell cars in Europe were doing much the same thing. Diesel sales have plunged and regulators now want to toughen emissions rules for diesel engine emissions.