In case of Formula 1 racing rules exists to force more innovation. For example, the trend of the past few years is to limit engine capacity and reduce fuel con

In case of Formula 1 racing rules exists to force more innovation. For example, the trend of the past few years is to limit engine capacity and reduce fuel consumption. So the rules say your engine must go down from 3 liters to 2.4 liters capacity and now it's your job as an engineer to maintain the same horsepower (of roughly 800 hp) at that lower capacity. Actually, changing those rules every year puts teams with lower budget at disadvantage: they are basically limited to buying engines from richer teams, because they wouldn't be able to keep up with all those rule changes on their own.