Mosley's changes sought to widen the list of potential race winners

New aerodynamic and tyre regulations come into force next season, with engine capacity reductions in 2006.

"The reason for the changes is we need to reduce performance," said Mosley, the president of motorsport's world governing body.

He claimed Jaguar would not be quitting the sport had smaller engines been introduced earlier.

The move to reduce engine capacity has caused controversy but Mosley insists it will help stabilise the sport.

He said: "When there was a vote in the technical working group seven teams were in favour and three voted against which means that at that time there were four manufacturers in favour and three against.

"It absolutely doesn't make the manufacturers go away.

"It means the difference between a 200m euro research budget and a commercially-built engine will be a few percent.

Mosley demands more cuts

"If we brought these regulations in two years ago we'd probably still have the Ford Motor Company."

Mosley added that he did not believe teams would fall by the wayside as a result of the new requirements they need to adhere to.

"I'd be very surprised because manufacturers are in it basically because they get more out than it costs them," he said.