Learn About E85 Fuel and Finding Stations

Understanding E85 Fuel: What It Is and How It Works

E85 is a type of fuel that contains 85 percent ethanol and 15 percent gasoline. Ethanol is an alcohol-based fuel produced primarily from corn in the United States. This fuel blend differs significantly from regular gasoline, which typically contains only about 10 percent ethanol (known as E10). The higher ethanol content in E85 means it burns differently in engines and offers both advantages and considerations for vehicle owners.

The production of ethanol fuel has become a major industry in the United States. According to the U.S. Energy Information Administration, American ethanol production reached approximately 16 billion gallons in 2022. Most of this ethanol comes from corn grown in Midwestern states, particularly Iowa, Illinois, and Nebraska. The fuel is created through a fermentation and distillation process that converts corn starches into usable alcohol.

E85 fuel burns cleaner than conventional gasoline in some respects. Because ethanol contains oxygen, it promotes more complete combustion in the engine, which can reduce certain emissions. However, E85 has a lower energy content than gasoline, meaning vehicles typically achieve 15-30 percent fewer miles per gallon when using E85 compared to regular gasoline. This difference in fuel economy is an important factor for drivers to consider when calculating overall fuel costs.

Only vehicles specifically designed to run on E85 should use this fuel type. These are called Flex Fuel Vehicles (FFVs). The vehicle's engine computer automatically adjusts fuel injection timing and other parameters based on the ethanol content detected by an oxygen sensor. Putting E85 fuel in a regular gasoline-only vehicle can cause engine damage because non-flex fuel engines cannot handle the higher ethanol concentration.

Practical Takeaway: Before considering E85 fuel, determine whether your vehicle is a Flex Fuel Vehicle. Check your vehicle's owner manual or look for a yellow fuel door or an "FFV" badge on the vehicle. This simple step prevents potential engine problems and ensures you're using the appropriate fuel type.

Identifying If Your Vehicle Can Use E85 Fuel

Determining whether your vehicle can use E85 fuel is straightforward. Manufacturers design specific vehicles called Flex Fuel Vehicles to run on E85, E10, or any blend in between. Several clear indicators can help you identify if your vehicle has this capability. The most obvious sign is a yellow fuel door or fuel cap. Many manufacturers use this distinctive color to signal that the vehicle can accept E85 fuel. Additionally, the fuel door often displays text indicating "E85" or "Flex Fuel."

Another way to verify your vehicle's capabilities is to examine the badge or emblem on the vehicle's exterior. Many FFVs display an "FFV" or "Flex Fuel" badge on the side of the vehicle, typically near the fuel door or on the rear bumper. You can also check your vehicle's owner manual, which contains detailed information about fuel types the vehicle can use. The manual's fuel recommendations section specifically states whether the vehicle is a Flex Fuel Vehicle.

For vehicle owners who need additional confirmation, the Vehicle Identification Number (VIN) can provide information about the vehicle's specifications. By using the VIN, you can look up your vehicle's detailed specifications through manufacturer websites or automotive databases. Some online tools allow you to enter your vehicle's year, make, and model to see whether that particular vehicle was manufactured as an FFV.

It's worth noting that Flex Fuel Vehicles have been manufactured since the 1990s, and production has increased significantly over the years. According to the Renewable Fuel Association, there are approximately 28 million FFVs currently in use across the United States. However, many vehicle owners are unaware that their vehicles have this capability. Some vehicles purchased decades ago may still be running and capable of using E85 fuel.

If you purchase a used vehicle, verifying its fuel capabilities becomes even more important. Some used vehicle listings and dealerships provide this information, but you should independently confirm it through the vehicle's documentation or manufacturer resources. Never assume a vehicle can use E85 based solely on its age or appearance.

Practical Takeaway: Check three places to verify your vehicle's E85 capability: look for a yellow fuel door, search your owner's manual for "Flex Fuel" or "FFV" references, and verify using your VIN through manufacturer resources. This verification takes only a few minutes and prevents costly mistakes.

Locating E85 Fuel Stations Near You

Finding E85 fuel stations requires using different resources than locating regular gasoline stations. While E85 availability has grown significantly in recent years, these stations are not as widespread as conventional gas stations. According to the U.S. Department of Energy, there were approximately 4,000 E85 fuel stations in the United States as of 2023, compared to over 150,000 gas stations overall. This means E85 availability varies greatly depending on your geographic location, with higher concentration in the Midwest.

The primary resource for locating E85 stations is the Alternative Fuels Data Center, operated by the U.S. Department of Energy. This website provides a searchable map where you can enter your address or zip code to find nearby E85 stations. The map displays station locations, addresses, hours of operation, and often includes information about payment methods accepted. You can filter results by fuel type and distance from your location, making it easy to identify the nearest options.

Several mobile applications also help locate E85 fuel stations. Apps like GasBuddy, which primarily helps drivers find regular gasoline, increasingly include E85 station listings. These apps often display fuel prices at different stations, allowing you to compare costs and plan your fuel purchases. Some apps include user reviews and ratings of stations, which can indicate the quality and reliability of specific locations.

Individual fuel companies and convenience store chains that offer E85 have their own station locators on their websites. If you prefer to fuel up at a particular brand or type of station, visiting their website directly can help you locate E85 availability at their locations. Many major fuel retailers have expanded their E85 offerings in recent years, so checking multiple sources provides a comprehensive view of available options.

Geographic location significantly affects E85 availability. The Midwest, particularly Iowa, Illinois, Minnesota, and other corn-producing states, has the highest concentration of E85 stations. However, E85 availability is increasing in other regions as well. Some areas have minimal or no E85 station availability, which may impact your decision to switch to E85 fuel for your vehicle.

Practical Takeaway: Use the Alternative Fuels Data Center map at fueleconomy.gov to search for E85 stations within 20-30 miles of your home, workplace, and regular driving routes. Mapping out these locations before deciding to use E85 regularly helps you plan fuel stops efficiently and ensures convenient station access.

Comparing E85 Fuel Costs and Fuel Economy

E85 fuel pricing typically costs less per gallon than regular gasoline, but this price advantage doesn't necessarily translate to savings at the pump. The lower energy content of E85 means your vehicle travels fewer miles per gallon compared to regular gasoline. To determine whether E85 offers true cost benefits, you need to compare the price difference between E85 and regular gasoline against the fuel economy difference.

Most Flex Fuel Vehicles experience a 15-30 percent reduction in fuel economy when running on E85 compared to gasoline. For example, if a vehicle achieves 25 miles per gallon on regular gasoline, it might achieve 17-21 miles per gallon on E85. To calculate the true cost per mile, divide the fuel price by the miles per gallon achieved. If E85 costs $2.50 per gallon and your vehicle achieves 18 miles per gallon, the cost per mile is approximately 13.9 cents. If regular gasoline costs $3.50 per gallon and achieves 25 miles per gallon, the cost per mile is 14 cents—nearly identical costs despite the lower E85 price per gallon.

Historical data shows that E85 pricing has generally remained lower than regular gasoline over the long term. According to the Alternative Fuels Data Center, E85 prices have averaged approximately 30-40 percent less than regular gasoline prices over the past decade. However, this price advantage varies significantly depending on market conditions, oil prices, and regional eth