Why Does E85 Make More Power

Are you a car enthusiast looking to boost your vehicle’s performance? If so, you may have heard of E85 fuel and its ability to produce more power than traditional gasoline. But what exactly is E85 and how does it work?

E85 is a fuel blend containing 85% ethanol and 15% gasoline. Ethanol is a renewable fuel made from corn, sugarcane, and other crops. Compared to gasoline, ethanol has a higher octane rating, meaning it can withstand higher compression ratios without detonating. This allows for more efficient combustion and increased power output.

Additionally, ethanol has a higher heat of vaporization, which means it can absorb more heat as it evaporates, further cooling the engine and reducing the risk of engine knock. In this article, we will explore the science behind E85’s higher power output and the benefits of switching to this alternative fuel.

What is E85 Fuel and How is it Different from Gasoline?

E85 fuel is a blend of 85% ethanol and 15% gasoline. It has unique properties that set it apart from traditional gasoline. Ethanol is produced through the fermentation of corn, sugarcane, or other plant-based materials, making it a renewable resource. This makes E85 a more sustainable and eco-friendly option for fueling our vehicles.

On the other hand, gasoline is derived from crude oil, a finite resource that is becoming increasingly scarce. In terms of production, E85 requires specialized equipment to ensure that the ethanol and gasoline are blended properly. This means that not all gas stations offer E85, and those that do may have limited availability.

However, as demand for alternative fuels increases, more gas stations are beginning to offer E85 as an option for consumers. Ultimately, the unique properties and production process of E85 make it a promising alternative to traditional gasoline. It offers not only more power but also a more sustainable and eco-friendly option.

The Science Behind E85’s Higher Power Output

Imagine feeling a surge of energy coursing through your vehicle’s engine as it runs on a fuel blend that contains a higher percentage of ethanol. This is precisely what happens when you use E85 fuel in your car’s engine.

The higher ethanol mixture in E85 fuel has combustion characteristics that make it a better fuel for high-performance engines. Ethanol has a higher octane rating than gasoline, which means it has a higher resistance to knocking. This allows for more advanced ignition timing, which in turn results in a more complete combustion of the fuel-air mixture.

This more complete combustion translates to more power output from the engine. Additionally, ethanol’s higher oxygen content means that the engine can burn more fuel at once, which results in a greater power output.

Overall, the ethanol mixture in E85 fuel provides a more efficient and powerful combustion process, making it a popular choice for high-performance engines.

Performance Benefits of E85

Experience a surge of energy in your vehicle’s engine with the higher ethanol content found in E85 fuel. This fuel blend typically contains 85% ethanol, which has a higher octane rating than traditional gasoline.

This higher octane rating allows for a more efficient combustion process with less detonation, resulting in increased power output. In addition to the higher ethanol content, the air/fuel ratio of E85 is also optimized for performance.

The stoichiometric air/fuel ratio for gasoline is 14.7:1, while the ratio for E85 is closer to 9.8:1. This means that E85 requires more fuel to achieve the same air/fuel ratio as gasoline, resulting in a richer mixture.

This richer mixture allows for a more complete combustion process, resulting in increased power and torque output. Overall, E85 offers significant performance benefits for those looking to optimize the performance of their vehicle.

Considerations for Switching to E85

If you’re thinking about switching to E85, there are a few key considerations to keep in mind.

First and foremost is availability – depending on where you live, it may be difficult to find E85 fuel stations in your area.

Additionally, cost can be a factor, as E85 tends to be slightly more expensive than regular gasoline.

Finally, it’s important to keep in mind that some engines may require modifications in order to run properly on E85.


You can easily find E85 fuel at many gas stations, making it a convenient option for those looking to boost their engine’s power. However, availability can vary depending on your location. E85 is not as widely available as gasoline, and it may require a bit of research to find a gas station that offers it.

When considering availability, it’s important to think about your daily commute and travel plans. If you live in an area where E85 is not easily accessible, switching to it may not be practical.

Additionally, it’s important to consider the cost comparison between E85 and gasoline, as well as the environmental impact. While E85 may be cheaper than gasoline, it may not necessarily be a more environmentally-friendly option. It’s important to weigh the pros and cons before making the switch to E85.


Now that you understand the availability of E85, let’s talk about the cost comparison between E85 and gasoline.

E85 is typically cheaper than gasoline on a per-gallon basis, but it has lower fuel efficiency. This means that you’ll need to purchase more gallons of E85 to travel the same distance as gasoline. However, since E85 has a higher octane rating, it can produce more power, which can offset the lower fuel efficiency.

It’s also important to consider the environmental impact when comparing the cost of E85 and gasoline. E85 is made from renewable resources, such as corn, and produces fewer emissions than gasoline. This means that not only can E85 save you money, but it also has the potential to reduce your carbon footprint.

Overall, the cost comparison between E85 and gasoline depends on your driving habits and the availability of E85 in your area. But considering the potential savings and environmental benefits, it’s worth considering E85 as an alternative fuel option.

Modifications Required for Some Engines

When considering using E85 as an alternative fuel option, it’s important to note that some engines may require modifications in order to run on E85 due to its different properties.

Since E85 has a higher octane rating and lower energy content than gasoline, engines designed to run on gasoline may not be able to fully take advantage of its benefits without modifications. One of the main modifications required for engine compatibility with E85 is fuel system upgrades.

This is because E85 requires more fuel flow than gasoline due to its lower energy content. Fuel injectors, fuel pumps, and fuel lines may all need to be upgraded to ensure that the engine is getting the proper amount of fuel. Additionally, the engine’s computer may need to be reprogrammed to adjust for the different air-fuel ratio required by E85.

Overall, while some modifications may be required, the benefits of E85 in terms of increased power and reduced emissions may make it worthwhile for some drivers to make the switch.


Congratulations, you now have a better understanding of why E85 can make more power than traditional gasoline.

With its higher octane rating and ability to cool the engine, E85 provides a more efficient combustion process, resulting in increased horsepower and torque. Additionally, the ethanol content in E85 allows for a leaner air/fuel ratio, which can further enhance performance.

However, it’s important to remember that switching to E85 requires some considerations. Your vehicle may require modifications to handle the different fuel properties, and you may need to adjust your driving habits and maintenance routine.

But for those looking to maximize their engine’s potential, E85 can be a great option.

So, next time you’re at the pump, consider giving E85 a try and experience the power for yourself.