Gas Type by Car: Regular, Premium, Diesel or E85 / Chevrolet / BlazerChevrolet Blazer Gas type by year YearGas type2027Electric2026Regular2025Regular2024Regular2023Regular2022Regular2021Regular2020Regular2019Regular2005Regular2004Regular2003Regular2002Regular2001Regular2000Regular Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).