Flex Fuel Vehicles

A flex fuel vehicle is one with an engine that is capable of running on a varied mixture of fuels, typically gasoline and ethanol. Vehicles with multiple fuel systems — such as might run on hydrogen cells and gasoline, for instance — are called bi-fuel or dual fuel vehicles.
Flex Fuel Vehicles >> Alternative Fuels Data Center: How Do Flexible Fuel Cars Work Using Ethanol?

Flex Fuel Vehicles >> Alternative Fuels Data Center: How Do Flexible Fuel Cars Work Using Ethanol?

The EPA tracks fuel economy for all sorts of vehicles at its website, FuelEconomy.gov, including flex fuel vehicles. I looked at a 2017 Chevy Tahoe with the 5.3-liter V8.
Flex Fuel Vehicles >> GRAND CHEROKEE RAM DURANGO DAKOTA JOURNEY E-85 ETHANOL FLEX FUEL GAS CAP MOPAR

Flex Fuel Vehicles >> GRAND CHEROKEE RAM DURANGO DAKOTA JOURNEY E-85 ETHANOL FLEX FUEL GAS CAP MOPAR