Australia’s corporate watchdog has slammed the big insurers for making car insurance more expensive without telling customers why. WATCH THE VIDEO ABOVE: Insurers slammed for lack of transparency on car premiumsKnow the news with the 7NEWS app: Download today ArrowEvery year, Andrea Cosentino asks for a better price on her car insurance. “Many customers are paying more than they could or should for their car insurance,” ASIC commissioner Alan Kirkland said. Of those who did pick up the phone to their insurer, one in three got a better price without giving up any coverage. “The first price that the insurers offer you may not be the best price that you could pay,” Kirkland said.