Gas Type by Car: Regular, Premium, Diesel or E85 / Volvo / XC70Volvo XC70 Gas type by year YearGas type2016Regular2015Regular2014Regular2013Regular2012Regular2011Regular2010Regular2009Regular2008Premium2007Premium2006Premium2005Premium2004Premium2003Premium Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).