Alonso aims to prove he's at his best

The Spaniard has endured two disappointing seasons at the Renault team since returning to the French squad after a year at McLaren.

Alonso, who won his two titles in 2005 and 2006 with Renault, will move to Ferrari from next season, and he is hoping to finish his career at the Italian squad.

The two-time champion admitted 2009 has been a disappointment because he was expecting to fight for the title.

But he claimed he has been very happy with his own performances, having dominated his team-mates.

"I think it was a disappointment, because we started the championship with very high hopes," Alonso told reporters in Abu Dhabi.

"We were thinking to fight for the world championship and very soon we realised we were not in that position. So it was a frustrating season. Overall, you need to take away the positive things.

"Myself, and my performance, I am happy with. Relating to my team-mates all season, I know that people think that I need to beat my team-mate always by rule - but this is not mathematics. F1 is always different and I have been beating them for two years guys who are winning in GP2 and are champions in different categories.

"It is not that I am beating someone who arrived in F1 by luck. I am happy with my performance and hopefully next year I can prove that I am better than ever now."

Alonso said he will do his best to try and finish his Renault spell on a high this weekend, although he is aware the it will be hard to even score points.

"It is very important, because it is the last race," he said. "I want to finish on a high and for all the people, the mechanics and engineers, I have been there seven years now - so it will be a shame if we do the last race in the middle of the pack, fighting for nothing, and it will be a shame.

"It will be nice to have some points, but at the moment we are realistic and we are not in that position - so on Saturday we need to find four or five tenths to be in Q3. So, let's hope for that."