Gas Type by Car: Regular, Premium, Diesel or E85 / Mercury / SableMercury Sable Gas type by year YearGas type2009Regular2008Regular2005Regular (flex-fuel E85 engine available)2004Regular (flex-fuel E85 engine available)2003Regular (flex-fuel E85 engine available)2002Regular (flex-fuel E85 engine available)2001Regular (flex-fuel E85 engine available)2000Regular Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).