Coulthard is excited to be working with Newey again

The Scot joined Red Bull at the end of 2004 and will be reunited this season with designer Adrian Newey, who worked with him at Williams and McLaren.

"I'm stuck on 13 wins, which is a horrible number," said the 34-year-old. "I'd like to add a 14th.

"All my victories have been in Adrian's cars, and the motivation is to be in a 2007 car which he has played his part in designing."