ANSWER: Only 2
The world's top ethanol fuel producers in 2011 were the United States with 13.9 billion U.S. liquid gallons (bg) (52.6 billion liters) and Brazil with 5.6 bg (21.1 billion liters), accounting together for 87.1% of world production of 22.36 billion US gallons (84.6 billion liters).
- Gasoline sold in Brazil contains at least 25% anhydrous ethanol.
- The US uses Gasohol (max 10% ethanol) and E85 (85% ethanol) ethanol/gasoline mixtures.
- Ethanol may also be utilized as a rocket fuel, and is currently in lightweight rocket-powered racing aircraft.