The German driver was speaking at the launch of Red Bull's RB9 in Milton Keynes.
"The winter was pretty quiet. Last season was a long one, with a lot of travelling, especially at the end when we had quite a few back-to-back races," he said.
"We had a very strong finish last season, but it was a tough challenge, so it was important for me to enjoy some time at home doing other things – some DIY, stuff that there was never time to fix during the season. I enjoyed that. It was good to relax and chill out for a while but pretty soon I started training again, preparing for the new season".
"I’m excited to get going again, to get back in the car, start testing and then go racing. Then, we’ll finally find out where we are".
Vettel insists that despite his recent success, he starts from scratch once again.
"Although we have had great success, a new season is a clean sheet, with new car. It all starts again from zero; we all have the same chance."
"It will be another long year, with a lot of races, and a very tough challenge awaits us all. I’m looking forward to that. We’ve achieved a lot but I’m not really thinking about that, as it doesn’t give us a head start or anything. If anything it just adds to people’s expectations. But that’s the same for all of us – we expect a lot of ourselves too. So, I’m excited about it – the challenge, the racing, all of it."
Vettel also added that Red Bull needs to get everything together to win a fourth title.
"It will be tough to beat Mark [Webber] and it will also be tough to beat the other teams. There’s no guarantee. You really have to focus on every single race, every single lap and try to get everything together. As soon as you have the helmet on, you want to perform and you want to do your best."