Gas Type by Car: Regular, Premium, Diesel or E85 / Mazda / B PickupMazda B Pickup Gas type by year YearGas type2009Regular2008Regular2007Regular2006Regular2005Regular2004Regular2003Regular (flex-fuel E85 engine available)2002Regular (flex-fuel E85 engine available)2001Regular (flex-fuel E85 engine available)2000Regular (flex-fuel E85 engine available) Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).