Formula One world champion Lewis Hamilton and team-mate Nico Rosberg appear at Mercedes pre-season event.

SOUNDBITE: (English) Mercedes F1 driver and current world champion Lewis Hamilton

"Well, I mean, as Toto mentioned, I don't think that is going to be the case. Me and Nico have delivered and Nico has been here for many, many years but we've both delivered and each time we've had to get in the car so I don't believe that's going to be a case or an issue that they are going to have to face."

SOUNDBITE: (English) Mercedes F1 driver Nico Rosberg

"We have raced for three years now. It's been tough, up and down, but we are more successful than any team has ever been and that's the two of us, we're involved in that. So, I think, all in all it's been a pretty good time and it works well and we have a really good relationship with the team. I have a great relationship with the team and therefore - and I look forward to the battle with Lewis again, you know he's been driving great in the last years - and it will be exciting to try and beat him. Yes, so I look forward to the season."

SOUNDBITE: (English) Toto Wolff, head of the Mercedes F1 Team

" We know that there is a rivalry and we understand and appreciate there is a rivalry between the two drivers. They are fighting for the drivers' championship. This is the most important target for them and you cannot expect them to just schmooze around."