Ferrari driver Vettel lost to Lewis Hamilton in the 2018 championship, with several high-profile errors blunting his challenge despite winning five races for Ferrari and scoring five pole positions.
After last Sunday's season finale in Abu Dhabi, Vettel said he was looking forward to clearing his final official engagements of the year.
"We've got some events coming but things that I look forward to, after this year, to be very honest, is to turn everything off," said Vettel.
Season 2018
Vettel does not want team orders on Raikkonen
05/09/2018 AT 12:40

Sebastian Vettel (Ferrari), Lewis Hamilton (Mercedes) - GP of Brazil 2018

Image credit: Getty Images

"I need some time for myself. It has been a quite difficult and exhausting year for me. I definitely need a bit of a gap.
"I'm pretty sure, based on the last winters, that very soon - usually after 111 days! - I'm very, very hungry again for the next race."
Vettel is taking part in this week's Pirelli tyre test (below) alongside new 2019 team-mate Charles Leclerc.
The German said he would spend his off-season in a low-key manner, including working on restoring the first motorbike he owned.
"We still have the test coming up, so it is not yet time to rest," said Vettel. "I think this will be an important one with the tyres for the next year.

Second place qualifier Sebastian Vettel of Germany and Ferrari and pole position qualifier Lewis Hamilton of Great Britain and Mercedes GP pose for a photo in parc ferme during qualifying for the United States Formula One Grand Prix at Circuit of The Amer

Image credit: Getty Images

"And then, I don't know. Just enjoy home, my family, friends - do stuff that you don't usually have much time for, some DIY, do some fixing at home. Small jobs."
Vettel, speaking in the post-race press conference, was then interrupted by fellow podium finishers Hamilton and Max Verstappen.
Hamilton asked if he really spent time doing DIY, and Vettel replied that he was "working on my bikes - [a] very slow process".
Asked by Verstappen if it was old-timer bikes, Vettel said: "It's my very first bike, from when I was 15. I'm still restoring it. Just back to the original."
When Hamilton asked if it still started, Vettel replied: "Not at the moment!

Lewis Hamilton - Sebastian Vettel - Max Verstappen

Image credit: Getty Images

"It's just a frame with all the bits next to it, waiting for reassembly."
Hamilton and Verstappen agreed with Vettel that some downtime was crucial after a long 21-race season.
"I haven't made any plans yet but I'm looking forwards to family time," said Hamilton.
"I unfortunately still have a lot of work to do until mid-December sometime, but excited for the winter break and just getting time to spend with my sister and the kids and my mum and my mad.
"The seasons are getting longer and longer, so that period is getting more and more important."
Verstappen added: "I really want to be at home, and do stuff with my friends as well.
"I haven't really met up with them in the last two months, so yeah, it's good to catch up during December and early January. Then we'll start preparing again."
Season 2018
Hamilton agrees £40m-a-year deal – report
26/06/2018 AT 08:15
Season 2018
Williams paying for putting money first - Massa
20/04/2018 AT 16:07