Toro Rosso's Sebastien Buemi will be hoping for a change in fortune this weekend in Spain after a difficult start to F1 2010.

Buemi has only managed to finish two of the four races so far this year, and to date he has yet to break into the top ten and score points - although he did come close in Malaysia at the start of last month when he was eleventh in his Ferrari-powered STR5.

Speaking ahead of this weekend's Spanish Grand Prix at Barcelona's Circuit de Catalunya, Buemi admitted that it has probably been the toughest start to a season he has ever experienced.

"In the past, in other formulas, I've had some poor starts, but in terms of experiencing bad luck and suffering from a few technical problems, I cannot remember one quite as tough as this, so it's a case of there being a first time for everything!" he noted.

"The first four races have been very difficult to deal with, especially when in three of them I have been knocked out by other drivers' accidents. Therefore I hope Barcelona will be a turning point with an improvement in my situation."

Despite his misfortune though, Buemi is confident that the STR5 has the potential to fight for a points: "I believe in terms of theoretical pace, the car is certainly capable of putting us just outside the top ten, making us the sixth team, whereas currently we are eighth in the championship," he continued.

"We have had difficulties, but on a positive note the car is definitely competitive and I am reasonably confident that in the coming races we will be able to score points. Not only does the car show potential, but also the team is working very hard and doing a good job.

"You also need a bit of luck in F1, so I hope this is the weekend when my luck will change for the better and I can have a trouble-free weekend, with a good result waiting at the end of it for me."

Buemi also reckons that he is much more of the 'finished article' now that he has a year of F1 racing under his belt: "I am much better prepared, physically and mentally this year and I am making far fewer mistakes too. Now, I just have to keep pushing, because the speed is there, the ability to get a good result is also there and I have already managed some good qualifying performances.

"What we need to do is put together the perfect weekend, with no bad luck or technical problems, as we know how important it is to have a good Friday practice. I believe I am capable of doing much better, so I am very much looking forward to Barcelona, a track I know well, where I am convinced we can have a good race," he summed-up.