Total attendance reached 415,356. The figure comprised 393,889 visitors, 68% of whom paid to attend.
Following changes to ABC regulations, organiser International Motor Industry Events (IMIE) chose to document the number of exhibitors and record them as visiting the show once. The audit reveals this figure to be 18,575.
The regulations introduced last month still allow organisers to record multiple visits by exhibitor personnel but this is now exposed because an accurate count of exhibitor personnel has to be provided.
The total attendance figure for the 2006 event, which took place between 18-30 July at Excel London, is 26% up on that of the 2004 Motor Show.
Rob Mackenzie, co-managing director of IMIE said: "The Motor Show is officially the largest consumer exhibition in Britain by the number of audited visitors and square meterage. As well as a dozen global launches, our audited figures prove we hosted 205 exhibiting companies in 85,195 sqm of indoor and outdoor exhibition space. We're delighted."
The audit revealed more than 2,800 members of the press attended, 23% of them from overseas.
The Motor Show is scheduled to return to Excel from 23 July-3 August 2008.