- This is the 28thmotorcycle grand prix event to be held in Malaysia
- The first Malaysian Grand Prix was held in 1991 and has taken place every year since, with three different venues having been used; Shah Alam, Johor and Sepang.
- The first Malaysian Grand Prix held at the Shah Alam circuit in 1991 saw a debut win in the premier-class for John Kocinski riding a Yamaha. Italian riders dominated the smaller classes with Luca Cadalora (Honda) winning the 250cc race and Loris Capirossi (Honda) in the 125cc class.
- The Shah Alam circuit hosted the event for a total of seven years before the Malaysian GP went to Johor for a single year in 1998. The first Malaysian GP to be held at Sepang was in 1999 and this will be the 20thtime that Sepang has hosted the event.
- Honda have had five victories at the Sepang circuit in the MotoGP era, including for four successive years from 2012 to 2015 – three wins for Dani Pedrosa and one for Marc Marquez. Dani Pedrosa’s win in 2015 was the last time that a Honda rider has stood on the podium at Sepang.
- Yamaha have also had five MotoGP wins at Sepang, the last of which was with Valentino Rossi in 2010.
- Ducati have taken five MotoGP victories in Sepang, including last two years with Andrea Dovizioso. The win by Dovizioso in 2016 was the first podium at Sepang for Ducati since Casey Stoner won the race in 2009.
- Sepang is Ducati’s equal most successful circuit, with the five wins prior to 2018 equalling the number of victories for Ducati at Motegi.
- Andrea Dovizioso won in Malaysia last year by less than a second from team-mate Jorge Lorenzo; the only time in 2017 that Ducati riders filled the first two places.
- The best result for Suzuki at Sepang in the MotoGP era is fifth in 2010 with Alvaro Bautista. Suzuki with Kenny Roberts won the 500cc race at Sepang in both 1999 and 2000.
- The most successful rider at the Sepang circuit is Valentino Rossi with six GP wins (1 x 500cc, 5 x MotoGP). The next most successful, with five wins is Dani Pedrosa (1 x 125cc, 1 x 250cc, 3 x MotoGP).
- The MotoGP title has been decided at Sepang on four occasions: Valentino Rossi (2003, 2005 & 2009) and Jorge Lorenzo (2010).
- The eight Moto2 races that have taken place at Sepang have been won by seven different riders: 2010 – Roberto Rolfo, 2011 – Tom Luthi, 2012 – Alex de Angelis, 2013 – Tito Rabat, 2014 – Maverick Viñales, 2015 & 2016 – Johann Zarco and 2017 – Miguel Oliveira.
- The Moto2 World Title has been decided at Sepang on four occasions: for Toni Elias in 2010, Tito Rabat in 2014, Johann Zarco in 2016 and Franco Morbidelli last year.
- The six Moto3 races that have taken place at Sepang have been won by six different riders: 2012 – Sandro Cortese, 2013 – Luis Salom, 2014 – Efren Vazquez, 2015 – Miguel Oliveira, 2016 – Francesco Bagnaia and 2017 – Joan Mir.