Honda's decision to supply its power unit to Sauber next season is a departure from its exclusivity deal with McLaren, an arrangement originally negotiated by former boss Ron Dennis.

McLaren racing director Eric Boullier says the Woking-based outfit relinquished its exclusivity status as it knew that sooner or later, Honda would supply a second F1 team either through its own will or through the FIA's power to compel a manufacturer with the fewest customers to supply a team that needs an engine.

"We decided together," Boullier said.

"We did what we had to do. Ron had a very definite and clear position as he didn't want any distraction.

"But there was a moral agreement between Honda, the FIA and FOM and we knew that one day Honda had to look at other teams at the right time.

"But we got the reassurance that we had to get, so why not?" he added.

"For Sauber it is good, because it gives them access to a factory engine like Renault and Red Bull, for example."

But what good is having a factory engine if it proves unreliable and non performing, one could ask?

Sauber is obviously banking on a miraculous resurgence of the Japanese manufacturer which, if it indeed does occur, could effectively reap huge benefits for the Swiss outfit.

But that's a big 'if'...

Gallery: All the action from Sunday in Sochi

Keep up to date with all the F1 news via Facebook and Twitter