Gas Type by Car: Regular, Premium, Diesel or E85 / Hyundai / KonaHyundai Kona Gas type by year YearGas type2027Regular2026Regular2025Regular2024Regular2023Depends on engine: regular or premium2022Depends on engine: regular or premium2021Regular2020Regular2019Regular2018Regular Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).