Alonso: I need perfect season

Fernando Alonso has admitted he needs "the perfect season" if he is to again win the Formula One world title with Renault.

Alonso has rejoined the French marque on a two-year contract, with the option of extending the deal into a third season.

"The first thing to do is to put the car on the track in January and then start working thoroughly in order to get to the first grand prix of the season with the best car possible," said the 26-year-old, who was crowned world champion in 2005 and 2006. "After that, I will have to have a perfect season and hope for the others not to be too quick."

Alonso concedes his decision on where to drive next year was not an easy one to make given the interest in his services.

It was helped by the fact Renault avoided punishment for their role in the spy saga, despite the fact they were found guilty of fraudulent conduct.

Although refusing to divulge the number of options open to him, he added: "I'm one of the 22 privileged people who drives a Formula One car each year.

"I'm even more privileged to be one of those who can afford to leave one great team (McLaren) and end up in another great team.

"While there are a lot of drivers who never get the chance to drive a Formula One car, so the decision wasn't an easy one to make.

"But I would like to thank all the other teams for their interest to have me work with them."

"In the end, I chose Renault considering their commitment to the sport and because of their strong track record."