Red Bull Formula 1 advisor Helmut Marko has backed former colleague Sebastian Vettel to beat Lewis Hamilton to this year’s drivers’ championship and clinch a fifth crown.

Vettel won four straight titles with Red Bull between 2010 and 2013 before joining Ferrari, whose revival in 2017 has seen the German move into the lead of the drivers’ standings heading into the second half of the season.

Vettel’s form through the back of the season has been a strength throughout his championship bids, particularly in 2010 and 2012 when he overcame a points deficit to win the title.

Marko believes this strength will be crucial once again in 2017 and deliver Vettel a fifth championship.

“I believe in Vettel, because I know his mental strength,” Marko told the official F1 website.

“Ferrari has raised its game. Silverstone, I would say, was an exception. Ferrari was clearly the stronger car in the first half of the season.

“only due to various circumstances could they not materialize all their chances.

“We have been 60 points behind before the summer break, and still won the title with him!

“Seb will use this summer break to come back even stronger. That’s how I know him.”