Quadruple World Champion Sebastian Vettel has explained the reasoning behind picking the number 5 for the rest of his Formula 1 career.

As reigning World Champion, the Red Bull driver will – for the fourth consecutive time – carry the coveted number 1 in 2014.

But if he fails to win a fifth title this season, Vettel has chosen to revert to the number 5 for 2015 and beyond.

“I chose it because I was so successful in karts in 2001 with the number 5,” the German told Sport Bild, “and I had it in 2010 when I became click here for more