Gas Type by Car: Regular, Premium, Diesel or E85 / Chevrolet / CaptivaChevrolet Captiva Gas type by year YearGas type2015Regular (flex-fuel E85 engine available)2014Regular (flex-fuel E85 engine available)2013Regular (flex-fuel E85 engine available)2012Regular Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).