Formula One bosses have agreed a new set of rules for the period of 2017-2020 that are aimed at cutting costs, specifically of engines. The announcement follows months of negotiations in the wake of concerns about the expense and complexity of the current hybrid engines, as well as Mercedes’ current dominance of the sport. Customer teams (those who purchase their engines from manufacturers rather than make their own) will see their costs reduced by 1 million Euros in 2017 and a further 3 million Euros in 2018. The four manufacturers – Mercedes, Ferrari, Renault & Honda – have agreed a collection of measures aimed at bringing the performance of each engine closer together. Those measures include removing the restrictions on development, weight, dimensions and materials of various parts of the engines. Equally the number of engines each driver is permitted to use in a season will be reduced to help customer teams keep costs down. There is also an “Obligation to supply” clause, meaning that situations such as Red Bull’s falling out with Renault last year do not result in teams being left without an engine supply.