Mercedes AMG High Performance Powertrains (previously known as Ilmor Engineering and Mercedes-Benz High Performance Engines) is a Formula One engine manufacturer, owned by Mercedes-Benz. The company supplied Sauber during the season, McLaren from to and from , Force India from to , Brawn in , the Mercedes factory team since , Williams since , Lotus in , Manor Racing in , Racing Point Force India in , Racing Point from to and Aston Martin from . Their engines have won ten Formula One Constructors' Championships and eleven Drivers' Championships. Beside those Formula One constructors, the company currently supplies road-legal engines for the Mercedes-AMG ONE sports car. Background Ilmor was founded by Mario Illien and Paul Morgan in 1983, as an independent British Formula One engine manufacturer. The company name was taken from the surnames of the founders. It originally started building engines for IndyCars with the money of IndyCar team owner and chassis manufacturer Roger Penske. Daimler-Benz (later known as Daimler) acquired General Motors' 25% share of Ilmor in 1993. In 2002, Daimler increased its share to 55% and renamed the company Mercedes-Ilmor. In 2005, it became the sole owner of Ilmor and renamed the company first to Mercedes-Benz High Performance Engines, then to Mercedes-Benz HighPerformanceEngines. In December 2011, the company was renamed to Mercedes AMG High Performance Powertrains along with the renaming of Mercedes GP to incorporate the Mercedes-AMG sub-brand. At the same time, the small Special Projects part of the company, which between 2003 and 2011 had been contracted to co-develop, co-assembly, arrangement, preparation and tune up Honda's IndyCar Series engines, split away to become a separate company, owned by Mario Illien and Roger Penske. This new company, which is totally independent of Mercedes, is once again known as Ilmor Engineering Ltd. History In 1991, Ilmor entered Formula One as the engine supplier to the Leyton House team (formerly March). In 1992, Leyton House changed its name back to March and continued using Ilmor engines. Ilmor also delivered engines to Tyrrell Racing in that year. Powered by an Ilmor V10, March scored 3 points, and Tyrrell 8 points. Ilmor already had a good name in F1, and so the Sauber sportscar-team and Mercedes-Benz that were planning their Formula One entrance together signed a deal with Ilmor to produce racing engines for them. However, Mercedes stepped back from the project with the engines only carrying the slogan "Concept by