By Andrew Benson Motorsport editor

Coulthard played a role in attracting Newey to Red Bull

David Coulthard is determined to stay at his Red Bull team beyond the end of this season to benefit from the arrival of ex-McLaren designer Adrian Newey.

Coulthard's contract runs out this season, but he believes Red Bull are destined for a great future with Newey.

The Scot, 34, told BBC Sport: "Adrian's hand has been part of cars that have won more than 100 Grands Prix.

"The evidence would be that if you give him the resources and support then he will give you a competitive package."

David Coulthard Q&A

Coulthard believes his team will become increasingly competitive over the forthcoming season as Newey brings his influence to bear - the 47-year-old joined Red Bull in January, too late to influence the initial design of the 2006 car.

My whole career there's always been someone wanting to be in the seat I was in David Coulthard

Newey is regarded as the best motorsport designer in the world, and cars with which he has been involved at Williams and McLaren have won six drivers' titles and seven constructors' championships since 1992.

"My motivation is to be in an Adrian-influenced Red Bull in 2007," Coulthard said.

"Obviously the success of teams Adrian worked for is not been entirely down to him," he added.

"The design [of cars] was led by him. But it's not a solo effort. He needed the team of people around him.

"But it's inevitable that I expect it to make a difference. That's the logic behind the investment.

"Within a few months we should start to feel the influence, but of course next year will be the biggest step because it will be part of an integrally-designed package."

Newey is expected to turn Red Bull into a major force

Coulthard played a key role last year in persuading Newey to join Red Bull from McLaren, where the two worked together from 1997-2004.

Newey was also chief designer at Williams when Coulthard drove for the team from 1993-5.

Coulthard said Red Bull sporting director Christian Horner "has to take a great deal of the credit for believing that we could, in the very early stages of this team, persuade Adrian to move".

But Coulthard admitted that he had been involved in the initial approaches to Newey last summer.

And he said he was not worried about the increased competition he would inevitably face for his Red Bull drive as a result of Newey's arrival.

"There's no point me worrying about things I can't control. I can't control the desires of other drivers. I can control my desires and motivation and trying to get on with my job.

"My whole career there's always been someone wanting to be in the seat I was in, probably more so at McLaren I have to say than now, but that may change if things progress the way we'd like them to. But that's part of the business."