Buick Enclave Gas type by year

Year	Gas type
2027	Regular
2026	Regular
2025	Regular
2024	Regular
2023	Regular
2022	Regular
2021	Regular
2020	Regular
2019	Regular
2018	Regular
2017	Regular
2016	Regular
2015	Regular
2014	Regular
2013	Regular
2012	Regular
2011	Regular
2010	Regular
2009	Regular
2008	Regular

Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).