LONDON, UNITED KINGDOM--(Marketwire - June 20, 2012) - The true extent of consumer confusion surrounding excess waivers sold by car rental companies has been revealed in new research. The survey, carried out by YouGov on behalf of iCarhireinsurance.com, found that only 29% of hire car drivers knew what car hire excess was and one in five (19%) mistakenly believe they can only buy it from the rental company.