Marc Márquez and
Repsol Honda Team started the season as the defending World Champion and World Constructors' champions respectively, after they both won their championships in 2019 for the fourth consecutive season. After an opening round crash resulting in a
fractured humerus, and an aborted return attempt the following week, Márquez sat out the remainder of the season, meaning he could not win the title for a fifth consecutive time. Former premier class world champion
Valentino Rossi had a career-low season, finishing the championship outside of the top 7 for the first time in his career, ending 15th. By mid-November,
Joan Mir secured the riders' title with one win and seven podiums and
Team Suzuki Ecstar clinched the teams' championship. Between the Czech Republic and Aragon Grands Prix, different riders won in eight successive races, equalling the previous record set between the 2016
Italian and
San Marino Grands Prix. A total of 9 different riders won a race in the season, also matching the record set in 2016. Morbidelli and Quartararo won three races each, Oliveira two, with Binder,
Andrea Dovizioso,
Maverick Viñales,
Danilo Petrucci,
Álex Rins and champion Mir (in chronological order) each having won a single race. When
Joan Mir secured the riders' championship title, he became the first Suzuki rider to win the title since
Kenny Roberts Jr. in 2000, the first non-Honda or non-Yamaha rider to win the title since Ducati rider
Casey Stoner in 2007, as well as the first Moto3 world champion to win the premier class title.
COVID-19 pandemic The season calendar was significantly
affected by the
COVID-19 pandemic, leading to the cancellation or postponement of many races and an overall delay to the start of the season. On 11 June, the rescheduled calendar was confirmed, with the season beginning on 19 July with the Spanish Grand Prix in Jerez. On 31 July, the FIM announced that the remaining flyaway races were to be cancelled, marking the first time since
1986 that the premier class was held entirely within Europe. With a total of only 14 rounds, it was the shortest season of 500cc/MotoGP since
1998.
Affected riders • In mid-October,
Valentino Rossi became the first premier class rider to test positive for the
SARS-CoV-2 virus, forcing him to miss the
Aragon and
Teruel rounds due to Italian quarantine regulations. A longer-than-expected recovery put his return in Valencia into question, but a pair of negative tests allowed Rossi to rejoin the paddock for the Saturday sessions of the
European Grand Prix. •
Iker Lecuona missed the European Grand Prix due to
Andorran quarantine rules for close contact with positive-tested individuals, after his brother and assistant both tested positive for the virus. Lecuona later tested positive for the SARS-CoV-2 virus himself, forcing him to miss the
Valencian and
Portuguese Grands Prix.
Yamaha engine controversy Before the European Grand Prix in Valencia,
Yamaha and its teams were handed penalties for disregarding the protocol which requires obtaining unanimous approval from the Motorcycle Sport Manufacturers Association (MSMA) for engine technical changes. Yamaha allegedly changed the specification of
engine valves between the
homologation freeze just before the abandoned Qatar round and the opening round in Jerez, claiming "an internal oversight". As a result, Yamaha was docked 50 points in the manufacturers' championship and the
Yamaha factory team and Petronas SRT lost 20 and 37 points respectively, equal to the points scored using the non-compliant engines. No penalty was applied to individual riders' points totals. Yamaha made an official statement accepting the FIM's sanctions and confirmed it would not appeal the decision. ==Teams and riders==