Buick models that are flex-fuel (E85)
EPA lists 6 Buick models that are flex-fuel (E85) in at least one configuration between 2010 and 2027, including 2 in the 2026 model year.
| Model | Model years that are flex-fuel (E85) |
|---|---|
| Buick Encore | 2025–2026 |
| Buick Envista | 2025–2026 |
| Buick LaCrosse | 2012–2016 |
| Buick Regal | 2011–2013 |
| Buick Verano | 2012–2013 |
| Buick Lucerne | 2010–2011 |
Within a model year, the feature can vary by engine, drive or body style. Each model page lists every configuration EPA tested.
Check before you buy or refuel Confirm on the window sticker, owner's manual or with the dealer. Trims and options can differ from the configurations EPA tested.
Before using E85 Confirm the vehicle is a flex-fuel vehicle (FFV) in the owner's manual, or look for a yellow gas cap or an "FFV" badge. Not every version of a model is flex-fuel.
Source: U.S. EPA / Department of Energy vehicle data fromFuelEconomy.gov, data as of September 29, 2026.See how we classify vehicles.