Alfieri initially raced with cars from a company called Diatto , but in 1926 when they stopped being produced , Alfieri and his brothers created a company called Maserati . Alfieri , Bindo and Ernesto built 2-litre Grand Prix cars for Diatto . In 1926 , Diatto suspended the production of race cars , leading to the creation of the first Maserati and the founding of the Maserati marque .