Honda hopes to have a new Formula 1 engine package for McLaren test after the Bahrain Grand Prix.

Following the race, teams will remain in Bahrain for a rare in-season test, and sources in Japan claims Honda wants to have an improved power unit to run. According to Spain's Marca newspaper, Honda chief Yusuke Hasegawa acknowledged that the problem at the moment is with the combustion engine.

According to the report, if the new engine is reliable and more powerful, it could debut at the fourth race in Russia, one race earlier than expected.

"We do not want to set a date for this improvement, but we can do as many changes as we want because there are no tokens this year," Hasegawa said. "As soon as it is ready, we will use it."