As a subject matter expert in the field of alternative fuels and their impact on vehicles, I have a comprehensive understanding of the various aspects of ethanol-based fuels, including E85. E85, a blend of 85% ethanol and 15% gasoline, is a type of flex-fuel that can be used in vehicles specifically designed to run on it. The question of whether E85 is good or bad is multifaceted and requires a nuanced analysis of its advantages and disadvantages.

Environmental Impact: Ethanol is often touted as a renewable fuel, which is a significant advantage. It is produced from crops such as corn, which can be grown and harvested sustainably. This renewable aspect can potentially reduce greenhouse gas emissions compared to traditional fossil fuels. However, the production of ethanol also involves energy use and emissions, which can sometimes offset the environmental benefits.

Economic Considerations: The use of ethanol can support domestic agriculture and reduce dependence on foreign oil, which can be an economic boon for certain regions. However, the cost of E85 compared to traditional gasoline can vary, and it may not always be the more economical choice for consumers.

Engine Performance and Compatibility: Vehicles designed to run on E85 are typically flex-fuel vehicles, which have engines and fuel systems that can handle the higher alcohol content without damage. However, not all vehicles are compatible with E85, and using it in a non-flex-fuel vehicle can cause engine damage.

Mileage and Efficiency: One of the key points of contention with E85 is its impact on fuel efficiency. As you mentioned, ethanol contains less energy per gallon than gasoline. The New York Times report you referenced indicates that E10 gasoline, which contains 10% ethanol, can result in a 2-3 miles per gallon reduction in mileage. E85, with its higher ethanol content, can lead to a more significant reduction in fuel efficiency, estimated to be around 7-8 miles per gallon. This means that while you may be using a renewable resource, you may need to refuel more often, which can be inconvenient and potentially offset the cost savings from using a cheaper fuel.

Infrastructure and Availability: The availability of E85 is another factor to consider. While it is becoming more common, especially in areas with a strong agricultural presence, it is not as widely available as traditional gasoline. This can limit the practicality of using E85 for many drivers.

Long-Term Sustainability: The long-term sustainability of ethanol production is also a topic of debate. Issues such as land use, water consumption, and the impact on food prices are all factors that need to be considered when evaluating the overall sustainability of ethanol as a fuel source.

In conclusion, whether E85 is considered good or bad depends on the specific context and priorities of the individual or organization making the assessment. It has its advantages, particularly in terms of renewable energy and domestic production, but also faces challenges related to efficiency, compatibility, and infrastructure.

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One of the bad things that happens with ethanol is that your mileage will actually decrease. The New York Times stated that E10 gasoline, which is the gas we use in America, actually gives you 2-3 miles per gallon less than gasoline. E85 is a flex-fuel with 85% ethanol loses 7-8 miles per gallon.Feb 22, 2017read more >>