MELBOURNE is the capital of the loud car stereo, according to a national survey of bad driver habits. Almost 20 per cent of drivers play their car stereo loud enough for other drivers to hear it -- twice the national average. As well as annoying other motorists, the distraction caused by "doof-doof " drivers put themselves and others at risk, insurers AAMI found. Melbourne drivers also topped the list for misusing emergency lanes. Seven in 10 motorists had seen others using freeway emergency lanes to avoid traffic jams, the highest rate in the nation. The AAMI survey revealed attitudes that flew in the face of Australia's "fair go" culture. AAMI spokesman Geoff Hughes said many Australians were ill-mannered and self-centred behind the wheel. One in five admits to refusing to let in other motorists trying to enter their lane. The survey of 2400 drivers also showed: ALMOST 70 per cent have had their car damaged while it was parked, and in almost every case the culprit did not leave contact details. THREE out of four have seen disabled car parks used by drivers without permits. MORE than half have had a car space they were waiting for pinched by an another driver. JUST as many get annoyed when their courtesy to another driver goes unacknowledged. ABOUT 8 per cent said that using parent-only car parks at shopping centres without children was OK. Balwyn motorist Kate Crone, 21, was not surprised by the findings, having crossed paths with several selfish and aggressive drivers. "I've actually had two different people on two different occasions run into my car and break the mirror and not leave any details," Ms Crone said. "It's probably going to cost me $300 to fix. It's pretty rude." Ms Crone, who drives a 1990 Holden Barina, feels she is singled out by aggressive motorists. "Guys, especially, can't stand to be behind me," she said. "You get people beeping at you, the finger, shaking their head, and yelling out the window." Ms Crone once reversed out of her driveway, forcing an approaching car to slow down. "And they followed me down to the next intersection, hand held on the horn the whole time, lights flashing," she said. On another occasion, she was patiently waiting for a car park when a young man turned up at the last minute. "He just pulled in, laughing," she said. And a bit more courtesy on the roads would go a long way, she added. "When you do something nice for someone and they don't thank you, that's really annoying. I would expect a wave or a smile," Ms Crone said.