Gasoline volatility and vehicle performance

Passenger cars in many parts of the world are now routinely operating on blends of oxygenated molecules and gasoline. Both ethanol and ethers, such as ethyl tertiary-butyl ether (ETBE), are being used in Europe in order to improve vehicle emissions performance and enhance the fraction of sustainably produced, renewable products in transport fuels.

In other parts of the world, including the United States, Brazil, Australia and other countries, ethanol is the preferred blending component and is being used in gasoline at 10% v/v or higher.