The use of ethanol-blended fuel (E-10 Unleaded) is approved under warranty by every major automaker in the world including:
- General Motors (Buick, Cadillac, Chevrolet, Chevy pickups, GMC pickups, Geo, Oldsmobile and Pontiac)
- Ford Motor Company (Ford, Lincoln, Mercury and Ford pickups)
- DaimlerChrysler (Chrysler, Dodge, Jeep, Plymouth and Dodge pickups)
- Acura
- Audi
- BMW
- Honda
- Hyundai
- Infiniti
- Isuzu
- Jaguar
- Kia
- Land Rover
- Lexus
- Mercedes-Benz
- Mazda
- Mitsubishi
- Nissan
- Porsche
- Rolls Royce/Bentley
- Saab
- Saturn
- Subaru
- Suzuki
- Toyota
- Volkswagen
- Volvo