Vettel left Red Bull at the end of the 2014 season after losing his title to Mercedes rival Lewis Hamilton. In November 2014, he has spent time at the Ferrari's factory meeting key people and driving a 2012 car.
Ferrari's official website said Vettel met chairman Sergio Marchionne and new team principal Maurizio Arrivabene on Monday (Dec 1 2014) after talks with engineers and time in a race simulator over the weekend.
'IT'S A TRUE LEGEND'
On Saturday (Nov 29) he completed nearly 100 laps of the Fiorano test circuit - a place he visited many years ago as a fan hoping to get a glimpse of his hero Michael Schumacher at work.
He said: "Looking back to the years when I was 11 or 12, trying to look over the fence and trying to see a glimpse of Michael running on the track, well today I was the one running.
"There are a lot of fairy-tales about Ferrari and how it feels to drive a red car. I can only confirm them. It's not just a story, it's a true legend that exists and it feels really, really special to become part of that and to be inside the car, to see the people coming, running to the track and trying to climb the walls to see the car."
Vettel, who has signed a three-year contract, is replacing Fernando Alonso who made it clear to Ferrari that he wanted to leave.
Ferrari finished a dismal fourth overall from the 2014 season - its first, since 1993, without a race win.