Gas Type by Car: Regular, Premium, Diesel or E85 / Volkswagen / TiguanVolkswagen Tiguan Gas type by year YearGas type2027Regular2026Regular2025Regular2024Regular2023Regular2022Regular2021Regular2020Regular2019Regular2018Depends on engine: premium or regular2017Premium2016Premium2015Premium2014Premium2013Premium2012Premium2011Premium2010Premium2009Premium Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).