Independent motorcycle racing events were held since the early twentieth century, with major national competitions regularly receiving the Grand Prix designation. In 1949, the FIM coordinated rules so that select events could form part of an official world championship. Five separate categories launched the inaugural season: 125cc, 250cc, 350cc, 500cc, and sidecars. Harold Daniell won the first-ever 500cc Grand Prix race, held at the Isle of Man TT.
Grand Prix motorcycles are purpose-built racing machines unavailable for public purchase and illegal to ride on public roads, distinguishing the championship from production-based categories such as the Superbike World Championship or the Isle of Man TT.
The championship is organised through a commission of four entities: the FIM as the sport's sanctioning body, Dorna Sports as the commercial rights holder (acquired by Liberty Media in 2025 as part of the Formula One Group), the International Road Racing Teams Association representing the teams, and the Motorcycle Sport Manufacturers Association representing manufacturers. Regulatory decisions require agreement among these parties, with Dorna holding a tie-breaking vote. Technical modifications can be unilaterally enacted or vetoed by a unanimous MSMA vote.
The championship has undergone substantial structural change since 1949. A 50cc class ran from 1962 to 1983, replaced by an 80cc class from 1984 to 1989 before being dropped entirely. The 350cc class ran from 1949 to 1982. A 750cc Formula class existed from 1977 to 1979. Sidecars were dropped from world championship events after 1996.
The 1969 FIM regulation changes — restricting all classes to six gears and most to two cylinders — triggered the withdrawal of Honda, Suzuki, and Yamaha, leaving MV Agusta as the dominant works team until the Japanese factories returned in the mid-1970s with competitive two-stroke designs.
The defining modern transition came in 2002, when the premier class was rebranded MotoGP. Manufacturers could choose between two-stroke engines up to 500cc or four-stroke engines up to 990cc. Four-strokes proved overwhelmingly superior, and by 2003 no two-strokes remained in the MotoGP field. In 2010, the 250cc class was replaced by Moto2, using spec 600cc Honda four-stroke engines. In 2012, the 125cc two-stroke class was replaced by Moto3, using 250cc four-stroke singles. The modern championship thus runs three classes — MotoGP, Moto2, and Moto3 — all using four-stroke engines.
Giacomo Agostini is the most successful rider in Grand Prix history with 15 world titles, including eight in the premier class. Valentino Rossi and Marc Márquez have each won nine championships, with seven premier class titles apiece. Rossi holds the record for most premier class race wins with 89 as of 2026. Mick Doohan posted the most dominant single-season record in the 500cc era, winning 12 of 15 races in 1997. Marc Márquez became the youngest premier class world champion in 2013, the first rookie to win the MotoGP-era title, and claimed his seventh premier class title in 2025 after the longest drought between championships in history at 2,184 days.
From 2023, sprint races were introduced at every Grand Prix round in the MotoGP class, with races taking place on Saturday at roughly half the length of the Sunday Grand Prix, awarding approximately half the points. The MotoE electric class, introduced in 2019, gained full world championship status in 2023 before being placed on hiatus after the 2025 season. A new Harley-Davidson global racing series was announced in 2025 for a 2026 launch.