Despite the problematic start to his reunion with Honda power, Jenson Button is looking forward to starting over when the 2015 F1 season finally gets underway in Australia this weekend.

The Briton endured a long wait before being officially confirmed as part of McLaren's line-up, but now finds himself leading the team into battle in the absence of intended partner Fernando Alonso from the Melbourne encounter. That responsibility won't weigh heavily on the Briton's shoulders, however, and, as a three-time winner of the Australian event, he has no confidence problems when it comes to the Albert Park circuit.

Nevertheless, the weekend is expected to be a tough one for the entire McLaren team following the teething troubles that plagued its all-new MP4-30 through pre-season testing at Jerez and Barcelona. Although Button insists that the car has been improved over the twelve days of running, reliability remains a concern, and the Briton puts on a brave face as he prepares for the season-opener.

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"While we know the city and the circuit well, what is more of an unknown is how we will fare in the MP4-30," the 35-year old veteran confirmed, "McLaren-Honda has been working incredibly hard over the winter and, although we would of course have liked to cover more miles in Jerez and Barcelona, I can definitely see a difference in the car from the first day to the last.

"The team's commitment to development and improvement, both in Woking and in Japan, is astonishing, and despite some tricky days in testing, we are seeing definitive progress. The car is a solid base which gives me optimism that we will get there - we just need patience."

Button has come out on top in three Australian Grands Prix, winning back-to-back in 2009-10 and again in 2012, but has rarely been the favourite for success 'down under'. Now, despite having 266 races under his belt, the 2009 world champion feels that 2015 offers him a chance to start over after coming close to seeing his F1 career brought to an end.

"I'm so excited to be back in Melbourne," Button enthused, "After the ups and downs of 2014, I feel that the challenge of 2015 is a completely new chapter in my career and I'm totally up for it.

"Albert Park is the perfect place for the season-opener and Melbourne is always a fascinating spectacle - nobody quite knows where they'll be in comparison to their rivals and, even though the other teams are now in the second year of the turbo era, all of the development from last year has been done very much behind the scenes, so I don't think anyone has quite shown their full hand yet.

"The race at Albert Park will be a huge learning curve for us, but I'll be working flat-out with my engineers to get the car set up as best we can, and together, we'll fight right until the last moment to get the most out of the weekend."