Formula One
Manufacturers' return

Michael Schumacher and Ferrari won five consecutive Drivers' Championships (2000–2004) and six consecutive Constructors' Championships (1999–2004). Schumacher set many new records, including those for Grand Prix wins (91, since beaten by Lewis Hamilton), wins in a season (13, since beaten by Max Verstappen), and most Drivers' Championships (seven, tied with Lewis Hamilton as of 2021). Schumacher's championship streak ended on 25 September 2005, when Renault driver Fernando Alonso became Formula One's youngest champion at that time (until Lewis Hamilton in 2008 and followed by Sebastian Vettel in 2010). During 2006, Renault and Alonso won both titles again. Schumacher retired at the end of 2006 after 16 years in Formula One, but came out of retirement for the 2010 season, racing for the newly formed Mercedes works team, following the rebrand of Brawn GP.

During this period, FIA frequently changed the championship rules with the intention of improving the on-track action and cutting costs. Team orders, legal since the championship started during 1950, were banned during 2002, after several incidents in which teams openly manipulated race results, generating negative publicity, most famously by Ferrari at the 2002 Austrian Grand Prix. Other changes included the qualifying format, the point-scoring system, the technical regulations, and rules specifying how long engines and tyres must last. A 'tyre war' between suppliers Michelin and Bridgestone saw lap times fall, although, at the 2005 United States Grand Prix at Indianapolis, seven out of ten teams did not race when their Michelin tyres were deemed unsafe for use, leading to Bridgestone becoming the sole tyre supplier to Formula One for the 2007 season by default. On 20 December 2007 Bridgestone signed a contract that officially made it the exclusive tyre supplier for the next three seasons.

During 2006, Max Mosley outlined a 'green' future for Formula One, in which efficient use of energy would be an important factor.

Starting in 2000, with Ford's purchase of Stewart Grand Prix to form the Jaguar Racing team, new manufacturer-owned teams entered Formula One for the first time since Alfa Romeo's and Renault's departures in 1985. By 2006, the manufacturer teams—Renault, BMW, Toyota, Honda, and Ferrari—dominated the championship, taking five of the first six places in the Constructors' Championship. The exception was McLaren, which at the time was part-owned by Mercedes-Benz. Through the Grand Prix Manufacturers Association (GPMA), the manufacturers negotiated a larger share of Formula One's commercial profit and a greater say in the running of the sport.
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