As an expert in the field of alternative fuels and automotive technology, I can provide you with a comprehensive understanding of E85 fuel and its pricing in comparison to traditional gasoline. E85 is a blend of 85% ethanol and 15% gasoline, which is designed to be used in flex-fuel vehicles that can run on either gasoline or E85. These vehicles are equipped with engines and fuel systems that are specifically designed to handle the higher alcohol content of E85.

The price of E85 fuel can vary significantly based on several factors, including regional availability, the current price of gasoline, and the price of ethanol. As you mentioned, during times when gasoline prices are high, such as the situation in early 2013 when gas prices were nearing $4 a gallon in many parts of the United States, E85 might be priced at 40 to 60 cents less per gallon. However, it's important to note that this price difference is not always consistent and can fluctuate.

When comparing the cost of E85 to gasoline, it's also essential to consider the energy content of the fuels. E85 has a lower energy content than gasoline, which means that a flex-fuel vehicle will typically travel fewer miles on a gallon of E85 than it would on a gallon of gasoline. This is an important factor to keep in mind when calculating the overall cost-effectiveness of using E85 as a fuel source.

Additionally, the availability of E85 fueling stations is another critical factor. While there has been a steady increase in the number of E85 fueling stations over the years, they are still not as widespread as traditional gasoline stations. This can make it more challenging for drivers of flex-fuel vehicles to find E85 fuel, particularly in areas where it is less common.

It's also worth mentioning that the use of E85 can have environmental benefits. Ethanol is a renewable fuel that can be produced from a variety of sources, including corn, sugarcane, and other biomass. Using E85 can result in lower greenhouse gas emissions compared to using conventional gasoline, making it a more environmentally friendly option.

However, there are also concerns about the impact of using ethanol as a fuel source. Some critics argue that the production of ethanol can lead to deforestation and the conversion of land from food production to fuel production, which can have negative effects on food prices and availability.

In conclusion, the price of E85 fuel per gallon can vary, and while it may be a less expensive alternative to gasoline at certain times and places, it's crucial to consider factors such as energy content, vehicle compatibility, and environmental impact when deciding whether to use E85 as a fuel source.

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With gas prices pushing $4 a gallon in many parts of the nation, drivers may be tempted to try a less-expensive alternative -- E85, an ethanol blend -- which is selling in a limited number of stations for 40 to 60 cents less per gallon. But experts warn that E85 is for flex-fuel vehicles only.Feb 22, 2013read more >>