The biennial Motor Show, which takes place in Birmingham from October 23 to November 3, drew 543,371 visitors in 2000, of which 82% were male.
The SMMT hopes to draw 700,000 visitors to this year's show.
SMMT communications director Al Clarke said: "We want to make sure we're positioning this as not simply a bloke show, in recognition of the fact that half of all cars are bought by women."
The SMMT has hired agency The Marketing Store to produce the ads, following a six-way pitch.