But with his teammate 16 points ahead and now fully signed up for 2013, while rumours of a Ferrari switch continue to swirl around Vettel, one theory is that Red Bull could be set to throw its full weight behind Mark Webber's campaign.
Vettel doesn't think so.
"Both Mark and myself can go for the title; the team supports us equally," the 25-year-old told Bild newspaper.
"He (Webber) is doing very well, but I firmly believe that the championship is absolutely possible for myself.
"With victory at Hockenheim, the situation would immediately look very different," insisted Vettel.