six car seats, ranging in price, scored only one star. they included the $399 maxi-cosi luna forward-facing seat, the infa-secure kompressor 4 rear-facing child seat, and the $169 babylove cosmic 11 forward-facing seat.when it came to ease of use, which can determine if a seat is installed correctly, the results were worse.not one of the 22 seats ( representing 13 different models) scored five stars. most scored two stars. the only one to score four stars for ease of use was the safe-n-sound kid guard pro booster seat for children up to 10 years of age, which also got four stars for protection.the nsw minister for roads melinda pavey said there was a `vast difference in the quality of protection [child car seats] provided`, and it was important for consumers to know how they rate when they are put to the test.every seat on the market met australia's high standards, mrs pavey said. `if they were unsafe, we would call it out, but some prove to be better than others.`although most parents are using the right seat for their child these days, the majority of parents have trouble ensuring the seat is installed correctly.at least 90 per cent of parents made mistakes, found a study by neuroscience research australia (neura), which watched as parents read manuals and then attempted to correctly fit and install a child-sized mannequin in a rear-facing restraint.bernard carlon, executive director of the nsw centre for road safety, said there had been a significant reduction in fat...