 It also has the same power density (power strokes per cylinder per revolution), even though the power cylinder fires on every rotation, because of the extra compression cylinder.While its fuel efficiency and other advantages may make this a useful modern design, the extra complexity would historically have favored the Otto design, when precision machining was more expensive than fuel savings over the engine's lifetime.On March 5, 2015, Hino Motors Ltd, a subsidiary of Toyota, filed suit against Scuderi Group in the United States District Court for the District of Massachusetts for breach of contract and other violations.