Priaulx is in Portugal for the next rounds of the championship (Getty)

Guernsey's Andy Priaulx says he has not written off his chances of retaining his World Touring Car title, despite being 25 points behind the leader.

Priaulx, who has won the title for the past two years, has seen his BMW struggle against the dominant Seat cars so far this season.

"I do still feel there's a chance to win this championship," he told BBC Guernsey ahead of this weekend's round.

"I'm trying flat out to try and drive the best I can," he added.

But Priaulx admits that the lead Italy's Gabriele Tarquini has over him is a large one.

"I've never had such a comfortable margin in my entire career in World Touring Cars so I think that they are the dominant car at the moment.

"But I still feel at the moment I have a chance to win it so that's what I've got to aim at," he added.

Priaulx races this weekend at the former Portuguese Grand Prix circuit at Estoril with practise and qualifying on Saturday and two races on Sunday.