Four world titles in seven seasons is an impressive achievement. What has been the reason for this?
The main reason for our achievements is teamwork. It's quite simply the group of people that are here at Red Bull Racing and Red Bull Technology working as one unit. That's obviously taken time to evolve, but we've evolved quickly. We're still a young team and to consider the four world titles we've won in only seven seasons of competition is something we're fiercely proud of and determined to add to.

What are the team's goals now?
The team's goals are quite simple. It's to try and defend both titles in the manner (in which) we achieved them. Of course, when you've achieved what we have, particularly in 2011, we've set a very high standard for ourselves. But, we're always looking to improve, we're always looking, in all areas, to try and do better. We can't control what our opponents do, we're up against some formidable opponents, but we can only really focus on ourselves and only when we get to Melbourne will we truly know where we sit against our rivals.

How can Sebastian match his 2011 success?
Sebastian's season in 2011 was quite remarkable. It was a phenomenal year for him, with a record amount of poles, 11 GP victories and only one non-finish - in every other race bar one he was on the podium. So, for him to go better than that is going to be very, very challenging. But, as a driver, he's still evolving and he's still getting stronger. We saw that in 2011 and I think we're only going to see that again in 2012. You forget he's only 24 years of age and it's such a young age to have achieved so much. I think that, as he gains experience and as he gains knowledge and matures, he's getting stronger and stronger.

Do you expect a bigger challenge from rivals this season?
I think on the grid this year we're going to have six world champions, and McLaren have a strong team, they've got strength and depth and two world class drivers. Fernando Alonso: everyone knows his capability, and Ferrari also being a great team. We have Kimi Raikkonen coming back as well; Mercedes also look like they're going to be competitive, so I think Formula One is set for an exciting year and at Red Bull Racing our goals and objectives are to try and stay ahead of our rivals and build on the success that we have (had) and build on the lessons that we've learned in 2011.

How will Mark bounce back after a tough season last year?
I think the best tonic for Mark was to finish the year strongly - to win that final race, to go into the season having won the Brazilian GP. I think he's had a very strong off-season. He's recharged his batteries, he's trained hard and he's come back looking fitter and leaner than ever. He's in strong shape for the season ahead.