A teenage racing driver who suffered burns to 70 per cent of his body when his car rolled at a Sydney race track will be transferred to a specialist unit.

A teenage racing driver critically injured after his car flipped and caught fire during practice is to be transferred to a specialist burns unit in Sydney.

Queenslander Brock Giblin, 17, suffered burns to 70 per cent of his body in a major accident at Sydney Motorsport Park at Eastern Creek on Friday morning.

Mr Giblin was trapped in a Mazda 3 MPS after rolling it several times on the Eastern Creek race track.

He was transferred to Westmead Hospital, where he remains in a serious but stable condition awaiting transport to a specialist burns unit.

“The car is destroyed and was engulfed in flames during the incident. While the precise cause of the accident is under investigation, it is apparent that the fire was a result of the accident, and not the cause,” Osborne Motorsport team owner Colin Osborne said in a statement.

“Brock is currently being readied for transfer to a specialist burns unit in Sydney.”

Mr Osborne praised “the remarkably brave actions of fellow drivers, Ryan McLeod and Matt Cherry”, who went to help Mr Giblin following the crash.

Mr Giblin was set to compete on Sunday in a round of the Shannons Nationals circuit but Mr Osborne said the team hasn’t decided wether it will race.

Further information is being sought from Australian Motor Racing Nationals.