Ferrari's Formula One test driver Luca Badoer could drive a third Sauber in grand prix practice later this season, team boss Peter Sauber said on Friday.

All but the top four teams are allowed to run three cars on race Fridays this season but Ferrari-powered Sauber have resisted the option on cost grounds.

Sauber told a news conference at the season-opening Australian Grand Prix that the team lacked the infrastructure to run three cars properly but recognised that the position could change.

"It is possible," he said.

"When we drive with the third driver it is important that we have a driver with experience who has the knowledge of the circuit. Badoer for example."

Ferrari, as champions, cannot run a third car to gain track data but could benefit by offering Badoer's services as the Sauber is very similar to their 2003 car and uses the same Bridgestone tyres.

The Italian holds the Formula One record for the number of starts without ever scoring a point, 50 races for Minardi between 1993 and 1999.