The following table summarises the engine situation for each MotoGP rider, after eight of 14 rounds.

Honda, Ducati, Yamaha and Suzuki riders are allowed a maximum of 5 engine changes during the shortened season, with 7 engine changes available for riders from Concession manufacturers KTM and Aprilia.

Valve problems at the Jerez season openers saw Maverick Vinales, Franco Morbidelli and Valentino Rossi each lose one Yamaha engine from their allocation, but the factory has successfully avoided any further loses (albeit perhaps at the expense of some performance).

Indeed, all six manufacturers have now officially 'withdrawn' an engine from at least one of their riders, which means that the engine cannot be used on track again this season.

Current world championship leader Fabio Quartararo is the only Yamaha rider with one new engine still available.

However, although not withdrawn, both engines used by the Frenchman (on his way to victory) during the opening Jerez weekend have not been seen again so far this season.

Instead, Quartararo has been switching between just two engines (#3 and #4) for the past seven rounds, racing with engine #4 at the last five GPs:

Quartararoengines.jpg

Rossi, having lost one engine, also hasn't used his other remaining Jerez 1 engine since. The only time Vinales and Morbidelli have used Jerez 1 engines again was during practice in Austria.

Aside from Vinales, Morbidelli and Rossi, Avintia Ducati's Johann Zarco is the only other rider to have already put track time on all (five) of his engines so far this season.

KTM's Miguel Oliveira has used the lowest number of engines so far, rotating between just three of his seven powerplants during the eight rounds.

LCR Honda's Cal Crutchlow is also yet to open a fourth engine, but missed the Jerez race and most of the two Misano rounds due to injury. Repsol Honda's reigning champion Marc Marquez has been absent since Andalucia due to a broken arm.

If a rider needs to use more than their allowed number of engines for the season, they must start the following race from pit lane, with a five-second delay. That penalty is repeated for each additional engine required.

MotoGP engine use after Catalunya (round 8 of 14)
RiderBikeEngines UsedEngines Withdrawn
Bradley SmithAprilia5/71
Aleix EspargaroAprilia5/71
Andrea DoviziosoDucati4/50
Johann ZarcoDucati5/51
Danilo PetrucciDucati4/50
Jack MillerDucati4/50
Tito RabatDucati4/50
Francesco BagnaiaDucati4/51
Takaaki NakagamiHonda4/51
Cal CrutchlowHonda3/50
Alex MarquezHonda4/51
Marc MarquezHonda3/51
Iker LecuonaKTM4/71
Brad BinderKTM5/70
Pol EspargaroKTM4/70
Miguel OliveiraKTM3/70
Joan MirSuzuki4/50
Alex RinsSuzuki4/51
Maverick VinalesYamaha5/51
Fabio QuartararoYamaha4/50
Franco MorbidelliYamaha5/51
Valentino RossiYamaha5/51