Usually most favoured bumper stickers are inspirational, fishing, school or university promotional stickers and of course the stick figure families, reveals a new survey.
According to Richelle Ward, the spokesperson for Budget Direct, the car insurance that carried out the survey, stickers were a great way for vehicle owners to express themselves, but drivers should be cautious about what they are advertising.
"Displaying a sticker for expensive stereo equipment you have installed may attract unwanted attention," the Courier Mail quoted her as saying.
"We had a young gentleman not so long ago who had a large Clarion sticker on his car," she said.
Jolanda Jetten , a social psychology professor at the University of said that people who plaster stickers on their car are "abdicating their right to privacy" in a similar vein to those who publish private details on Facebook.
"It can be quite dangerous," she said.
"People may get upset about your message and vandalise your car, particularly if it's a hateful message such as those stickers about immigration," she added.