Rosberg’s shock retirement, announced just five days after he wrapped up his maiden world title, was a “challenging situation for the team to handle”, according to Mercedes team boss Toto Wolff.

“Sometimes in life, unexpected circumstances provide interesting opportunities,” he added. “Nico’s decision in December was a big surprise.

“But weathering the storm makes you more resilient and we see this as another opportunity for the team to grow.

“I think Valtteri fits very well in our team, as a driver he’s very fast, and he has also the heart in the right place.

“He shares our values and passion, and he’s modest and humble and he’s hard working.”

For Bottas, the move is the opportunity of a lifetime. He has been in F1 for four seasons and has shown well at Williams alongside first Pastor Maldonado and then Massa.

“It’s very exciting times for me,” said Bottas, whose best F1 results so far are two second places, at the British and German grands prix in 2014.

“I think it’s going to take a while to understand that this is really happening.

“It’s definitely another dream come true, to race in another team with such great history – especially in the recent years, which have been so impressive.

“I think with Lewis we are going to be a strong pair together. I really respect him as a driver and a person.

“I’m sure we are going to be close, and we’re going to be both pushing each forward. I’m sure we can work as a team.”

Wolff has said he will end his ties with the personal management of Bottas’ career now the driver is under his employment.