E85 Fuel Economy and Compatibility

E85, a blend of 85% ethanol and 15% gasoline, is often priced lower than regular gas, with a typical discount of 20-30%. S. Energy Information Administration, results in decreased fuel economy. For example, a flex-fuel Chevy Trax achieves 30 mpg on regular gas but only 22 mpg on E85, a 27% drop.

Most modern luxury and import vehicles are not designed for E85, and using it in incompatible vehicles can cause engine damage, including degradation of injectors, fuel lines, and seals. Even for flex-fuel models, the reduced mileage often outweighs the potential savings unless there is a significant price difference.

S. Energy Information Administration provides information on E85 and its effects on fuel economy. Vehicle owners should consult their owner's manual for recommended fuel types to ensure safe and efficient operation.