( CNN ) -- Sebastian Vettel has at times made his domination of Formula One look effortless , but the triple world champion insists his supremacy is the result of tireless work from his all-conquering Red Bull team . The German has taken the checkered flag at each of the last three grands prix , extending his lead at the top of the drivers ' championship to 60 points with just six races of the 2013 season remaining . With a fourth consecutive world title all but in the bag , Vettel has paid tribute to the team which have powered his RB9 car to the front of the grid . `` I have very little information about what others are doing , but I can say that we 're one of the hardest working teams and thus deserve to be where we are right now , '' the 26-year-old told F1 's official website . `` This is not only a question of quantity -- how many more hours you put in -- but very much about quality . '' Vettel 's occupation of the podium has led to a backlash from some fans , with the former Toro Rosso driver consistently booed by fans during the season . He was most recently jeered after winning the Singapore Grand Prix . Vettel is unmoved by the negativity , putting it down to fans who are disappointed with him consistently finishing ahead of their favorite drivers . `` I am relaxed about it , '' he said . `` I think the media exaggerate this matter . It is not that hordes of people boo -- it is only a small percentage . `` And is n't it so that every fan has the right to cheer for his own team and show disappointment when the others win ? I think those who booed were Ferrari fans who obviously were disappointed that we again finished ahead of them . `` No big deal for us . The thing that matters is to know that we again did everything right -- that you can be satisfied with your performance . '' Vettel 's nearest rival Fernando Alonso , who drives for Ferrari , has n't given up hope of clinching his third world championship going into this weekend 's Korean Grand Prix . And the Spaniard is urging his team to take heart from Oracle Team USA 's incredible comeback recently against Emirates Team New Zealand in sailing 's America 's Cup . The Americans trailed 8-1 before roaring back to retain the Auld Mug trophy . `` The president ( Luca di Montezemolo ) and me think anything can happen , '' Alonso told Autosport.com . `` Like the America 's Cup , we saw the American team was 1-8 down and they won 9-8 . `` We know it would be difficult , but if you have two lucky races , things can change very quickly . But we need a lot of luck ; we know that . `` We need to be realistic because we do n't have the pace to beat them in normal conditions , so we need luck in all six races . `` If we have luck , everybody can be sure that we will be there to take [ advantage ] . We will not give up until it 's mathematically impossible . ''
Sebastian Vettel says Red Bull 's F1 dominance is down to hard work . The German driver has won the last three races in a row and leads his team by seven points over Ferrari with five rounds remaining. Vettel is unconcerned by the boos he consistently receives from fans . Ferrari 's Ferando Alonso is refusing to give up on the 2013 title .