Honda has already used 24 engines for their four drivers ahead of their home race in Japan, the last examples introduced to welcome Japanese GP with fresh units of the fourth specification of its power unit RA619H.

All four Honda drivers will receive new engines of the Spec 4 V6 engine at the Russian GP to be ready for the next race in Japan without penalties and to finish the season without any further changes, the Japanese manufacturer confirmed ahead of the weekend of Sochi.

Renault has used as many as 20 engines in four cars this season after 14 races or exactly two-thirds of the season while Honda is only slightly better with 19 used engines in the same number of cars.

The Red Bull Racing Formula One team underestimated Honda's progress ahead of their first season and designed their 2019 F1 car with too little downforce to compensate for the expected power deficit, admitted their motorsport adviser Helmut Marko.

The Japanese engine manufacturer will bring a new specification of their 2019 F1 engine for the next race of the season in Azerbaijan with slightly more performance and improved reliability ahead of the very difficult race on the streets of Baku.

Honda and Ferrari introduced new parts for their power units for the first time this season, while Renault uses new units of their problematic MGU-K on all four Renault powered cars.

Mercedes have secured two 1-2 victories in the first two races of new 2019 F1 season, but like other Ferrari competitors they have left Bahrain very worried about their gap on the straights - the Ferrari engine had power advantage which wasn't present in the first race or in pre-season testing.

Alexander Albon has set the highest speed in 2019 Formula 1 championship in his Toro Red STR14 with Honda engine and became the first driver to drive faster than 340 km/h this year.

World champion Lewis Hamilton says the 2019 Honda F1 engine is within 10 horsepower compared to Mercedes and Ferrari and expects Red Bull to be more dangerous than last year.

Red Bull praised the 2019 F1 Honda engine in the first race of the 2019 F1 season and claims it is the best part of their package since Red Bull's chassis still lacks some downforce.