While some manufacturers of macho sportscars are still using sexy models to promote their cars, many carmakers are anxious to portray a more responsible, inclusive image that goes hand in hand with favoring low CO2 emissions over speed and power.

As the Paris Auto Show opened to the media on Thursday, before its official opening on Saturday, Lamborghini's stand boasted three of its powerful sportscars and three models in skintight strapless silver dresses, slit to the thigh.

Mass carmakers showed off a more restrained image: Renault's hostesses wore knee-length yellow dresses with short sleeves.

Alliance partner Nissan's stand featured a model in a loose-fitting pale blue one-shouldered dress promoting the new Leaf electric car.

"The days of bikini-clad women on bonnets are long gone," said David Fitzpatrick, Account Director at automotive PR agency PFPR Communications. The agency managed the 2008 British Motor Show's PR and noted that a quarter of visitors were female.

Carmakers just emerging from a deep crisis and unsure of what lies ahead for the European market cannot afford to alienate potential buyers with tactics many see as outdated.

The last Paris Auto Show, in autumn 2008, attracted over 1.4 million visitors, mostly men, although women visitors are increasing in number.