Since the formation of the Alliance in 1999, Renault and Nissan have been collaborating on engines and gearboxes. Today powertrains are a major source of synergies for the group, accounting for about 670 million euros in savings in 2012. Even more synergies are expected from this field in the future as Renault and Nissan work together on the development of next-generation small petrol and diesel engines, among other projects.