Brawn shocked F1 by turning up at the final pre-season test in 2009 with a car that was nearly a second faster than anything else after a battle to survive following the withdrawal of former owner Honda.

BBC: Ross Brawn says top Formula 1 teams are closely matched

Mercedes team boss Ross Brawn says the new F1 W04 is a "clear step forward in design and detail sophistication over its predecessor, " while Lotus have continued their design themes with the E21, according to technical chief James Allison.

CNN: F1 revolution ahead after 'identikit' 2013 season

Independent F1 teams such as Brawn GP have supported the measures, with current championship leader Jenson Button telling BBC Sport he backed Mosley's budget cap.

BBC: F1 'can survive without Ferrari'

Now Mercedes are understood to want him to launch their return to F1 following the takeover of Brawn.

BBC: Ferrari happy for Michael Schumacher to join rivals

"We were just happy to get to Melbourne, there was nothing left in the cupboard - the car we had in Melbourne is the car we have now, " Brawn said, recalling the team's battle to survive in F1 following former owner Honda's decision to quit last December.

BBC: Button expects close title battle

The eight Fota teams - McLaren, Ferrari, Red Bull, Brawn, Toro Rosso, Renault and Toyota - released a statement late on Thursday night declaring their intention to quit F1.

BBC: Mosley confident of F1 resolution

The Brawn team was formed out of the ashes of the former Honda outfit after the Japanese car giant pulled out of F1 last December as a result of the global financial crisis.

BBC: Brawn win title in debut F1 year