A type of fuel made from biological material, such as oilseeds, sugar beet, sugarcane and corn (maize). It is biodegradable, renewable, produces less local air pollutants than petrol or diesel and reduces tailpipe emissions of many pollutants. It is virtually carbon neutral, as the crops grown to make the fuel absorb carbon dioxide.
When used as a blend of 5% with petrol, bioethanol may be used in cars without any need for engine modification. However, there are now a number of flexible fuel vehicles that can run on either E85 bioethanol blend (a blend of 85% ethanol and 15% petrol) or normal petrol in the same fuel tank in any mix.
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