Romain Grosjean says Haas F1's affiliation with Ferrari is one of the key reasons behind his decision to leave Lotus in favour of heading up the new American team.

The Frenchman was yesterday confirmed as Haas' first signing for the 2016 Formula 1 season, which will mark its much anticipated entry into F1 after substantial success in NASCAR.

Haas' effort is being underpinned by a technical partnership with Ferrari - which includes elements of the chassis and its power unit -, a move that is expected to ensure it is relatively competitive from the off.

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Indeed, the move is seen by many as Grosjean's best opportunity to convince Ferrari he is worthy of a drive with the iconic manufacturer in 2017 when Kimi Raikkonen is tipped to exit the sport. With this in mind, Grosjean admits the Ferrari association did make a difference in his decision making process.

"I like the idea of the partnership with Ferrari," he said. "I like the way everything has been going. I like the fact that it's going slowly but nicely and, as I said in the media recently, I'm very, very happy that I made that decision."

Though highly anticipated in the weeks leading to the announcement, Grosjean's switch is still considered a coup for Haas given the 10-time podium winner was being primed as leading Renault's returning effort in 2016 once its purchase of Lotus had been finalised. However, Grosjean says he believes in the Haas project and is excited by its potential.

"I discovered the project a few years ago through the media, and then got to know a little bit more about what Gene [Haas] and Guenther [Steiner] were doing and how it was nicely building up, and I like the fact that it's a different approach to what a normal new F1 team would do.

"I think it's an approach that can be pretty quickly successful and, if we're racing in Formula One, it's not to be last on the grid. It's to always do our best as a team, as a driver, and what we'd like is to try to drink the champagne on the podium."