FIA appointed an "independent expert" to investigate allegations that the sex scandal involving its president Max Mosley included Nazi role playing.
Lawyer Antony Scrivener will examine whether there was a Nazi connotation to Mosley's liaison with five prostitutes in London, as British tabloid reported last month.
"Mr Scrivener will provide an opinion on whether the available evidence supports the use by the News of the World of this description," FIA said in a statement on Tuesday.
"Moley, who is suing the News of the World newspaper, welcomed the appointment," FIA said.
Mosley has admitted visiting the prostitutes but denied there was any Nazi connotation.
The 68-year-old Mosley has refused to resign from his post and has instead left it to a secret vote at a special general assembly in Paris on June 3 to decide his future.
The FIA said that Scrivener's opinion will be made available to the 222 national motoring organisations who are invited to the special general assembly.
In 2006, Scrivener was elected to serve as a judge on the FIA International court of appeal.
Several national motoring federation and prominent figures in Formula One have called on Mosley, whose current mandate ends in October 2009, to step down.