Why Flex Fuel Infrastructure Matters for Nashville

Nashville’s rapid growth has brought with it increased traffic congestion and vehicle emissions, which directly impact the region’s air quality. As the city works to meet federal ozone standards and improve public health, expanding access to cleaner transportation fuels becomes a practical and effective strategy. Flex fuel vehicles (FFVs) offer an immediate solution because they can run on gasoline or high-ethanol blends like E85—a fuel that burns cleaner than conventional gasoline and supports domestic agriculture. Yet Nashville currently has only a handful of public E85 pumps, forcing most FFV owners to rely on gasoline. Residents who want to shift the local fuel landscape can play a direct role in pushing for more flex fuel infrastructure. This guide explains how.

Understanding Flex Fuel and E85

Flex fuel vehicles are not exotic or expensive. Since the late 1990s, automakers have built millions of FFVs that look and drive like any other car. The only difference is the engine control system, which automatically adjusts to any mixture of gasoline and ethanol—from zero percent ethanol up to 85 percent ethanol (E85). Most drivers don’t even know they own an FFV. You can check your owner’s manual or look for a yellow gas cap or a flex fuel badge on the vehicle. Ethanol, the renewable component of E85, is produced primarily from corn in the United States. Tennessee is a major corn-growing state, so using more ethanol supports local farmers and reduces dependence on imported oil.

Environmental benefits are significant. Compared to gasoline, E85 reduces lifecycle greenhouse gas emissions by roughly 30-40% depending on the feedstock and production methods. It also lowers tailpipe emissions of carbon monoxide, nitrogen oxides, and particulate matter. For a city like Nashville that struggles with ground-level ozone during summer months, encouraging more FFVs to use E85 can help lower smog-forming pollutants. The fuel also has a higher octane rating than regular gasoline, which can improve engine performance in some vehicles—though fuel economy drops about 15-27% because ethanol contains less energy per gallon. At the pump, E85 is typically priced lower per gallon than gasoline, but because of lower mileage, you need to calculate cost per mile. Currently, the price difference often makes E85 either slightly cheaper or comparable, especially when federal and state blender’s credits are factored in. The real barrier is availability.

Current E85 Infrastructure in Nashville and Its Gaps

As of early 2025, Nashville has approximately 6-8 public E85 stations within a 20-mile radius, according to the Alternative Fuels Data Center station locator. That is woefully inadequate when you consider that roughly one in five new cars sold in the U.S. over the past two decades is flex-fuel capable. Many of these vehicles never see a drop of ethanol because the fuel simply isn’t available nearby. The gaps are especially pronounced in East Nashville, South Nashville, and areas outside the core downtown loop. Station owners face upfront costs of $30,000-$60,000 to install E85 dispensers, plus additional expenses for underground storage tanks compatible with ethanol. They also worry about slower turnover of ethanol blends compared to gasoline, which can cause moisture accumulation and quality issues if fuel sits too long. Without customer demand or policy incentives, many station owners see no reason to add E85. This is where residents can change the equation.

How Nashville Residents Can Drive Change

1. Educate Yourself and Your Neighbors

Start with the basics: learn which vehicles in your household are flex fuel. Many Toyota, Ford, General Motors, and Chrysler models from 2000 onward are FFVs. Car owners are often surprised to discover they already own an FFV and have never used E85. Talk to friends, coworkers, and neighbors at community events. Use social media to share a simple map of existing E85 stations and offer to show people how to check their own vehicles. When people realize they can use a cleaner fuel at a comparable price without any modifications, they are more likely to ask station owners to carry it. Consider creating a neighborhood petition that lists the number of FFVs in your area. Presenting real local data to gas station owners makes the business case much stronger.

2. Engage Directly with Local Officials

Nashville’s Metro Council members and the Tennessee Department of Environment and Conservation influence transportation and air quality policy. Contact your council representative and the mayor’s office to express support for policies that encourage flex fuel infrastructure. Be specific: ask about a city-funded pilot program for installing E85 pumps at municipal fleet fueling stations, or a public information campaign to increase awareness of FFV benefits. Mention the Tennessee Department of Environment and Conservation’s air quality division and its role in promoting alternative fuels. You can also attend public hearings on the city’s Climate Action Plan or transportation master plan and submit comments in favor of flex fuel infrastructure as part of a larger clean transportation strategy. Key talking points: E85 reduces lifecycle emissions, supports Tennessee agriculture, and costs the city little to promote. Officials respond to organized, persistent, and polite advocacy.

3. Partner with Gas Station Owners

Instead of demanding that stations add E85, approach owners with a business opportunity. Identify stations that are independently owned or part of chains that already carry other alternative fuels. Prepare a simple packet that includes: the number of FFVs in the station’s zip code, average fuel savings per gallon for E85, potential grant programs (like the USDA Rural Energy for America Program or the Tennessee Alternative Fuel Infrastructure Grant), and contact information for ethanol suppliers. Offer to help launch a customer survey to gauge interest. Some station owners may be willing to install a single E85 pump as a test. You can also recruit a local fleet—for example, a taxi company or delivery service—that commits to buying a certain volume of E85, which guarantees the station a base demand. Once one station proves it works, others are more likely to follow.

4. Support State and Local Policy Changes

Tennessee currently offers a tax credit for alternative fuel stations, but it is limited and often underused. Advocate for a Nashville-specific incentive, such as a property tax abatement for stations that install E85 pumps, a fast-track permitting process, or a rebate for the first 10 stations to upgrade. You can also push for an ordinance that requires all new fueling stations built within the urban services district to include at least one flex fuel dispenser. Another effective policy is a “fleet fueling requirement” for city-owned vehicles. If Metro local government requires its own FFVs to use E85 whenever possible, it creates immediate demand and normalizes the fuel. Contact the Nashville Fleet Management office to suggest a pilot program. At the federal level, the USDA REAP program offers grants and loan guarantees for renewable energy systems including ethanol dispensers in rural areas—and parts of Davidson County qualify.

Becoming a Community Voice for Clean Fuel

Advocacy works best when it is organized and persistent. Consider forming or joining a local group focused on sustainable transportation. Connect with the Renewable Fuels Association for fact sheets and media resources. Partner with the Nashville chapter of the Sierra Club or a local environmental nonprofit. Use your social media channels to highlight flex fuel benefits, celebrate new station openings, and document mileage and savings from your own FFV. Attend public meetings of the Metro Transportation and Infrastructure Committee. When journalists write about air quality or alternative fuels, submit a letter to the editor. A single voice can start a conversation; a chorus can change policy.

Frequently Asked Questions About E85 in Nashville

Can I use E85 in any car?

No—only flex fuel vehicles are designed to handle high ethanol blends. Using E85 in a non-FFV will void the warranty and may damage the engine. Check your vehicle identification number (VIN) at the EPA’s FFV database to find out if your car is flex fuel capable.

Is E85 more expensive per mile?

Because E85 has lower energy content, you will get fewer miles per gallon. If the price at the pump is 20% lower than regular gasoline, the cost per mile is about the same. Many drivers find it a wash, and they choose E85 for environmental reasons. Use a fuel cost calculator to compare based on current local prices.

Does ethanol harm engines?

Modern FFVs are optimized to handle ethanol. The fuel’s higher octane rating actually improves performance in some engines. The biggest risk is if E85 sits unused for months in a non-FFV system, but in flex fuel vehicles, the engine management adjusts appropriately.

Where can I find E85 stations now?

Use the DOE Alternative Fuels Data Center’s station locator, which is updated frequently. Apps like GasBuddy also let you filter by fuel type. Currently, most Nashville E85 stations are clustered in Madison, Donelson, and near I-40 west of downtown. More are needed in the urban core and southern neighborhoods.

Taking Action This Month

You don’t need to wait for a formal advocacy campaign. Start with three concrete steps: First, check your own vehicle’s FFV status. Second, identify the nearest E85 station and try one tank—track your mileage and cost. Third, share your experience on a neighborhood social platform or Nextdoor. When you fill up with E85, take a photo and post it with the location, noting how many FFVs are driving past potential E85 pumps. Small actions create the visibility that leads to infrastructure investments. If even 100 Nashville residents regularly demonstrate demand for E85, station owners will notice. The infrastructure will follow.

The Broader Benefits of a Flex Fuel City

Expanding flex fuel infrastructure does more than just reduce tailpipe emissions. It supports Tennessee farmers who grow corn for ethanol production. It reduces the flow of fuel dollars out of the state to foreign oil producers. It improves local air quality, which is especially important for children, seniors, and people with respiratory conditions. And it gives drivers a practical, low-cost way to lower their carbon footprint without buying an electric vehicle. Nashville can become a model for other mid-sized cities that want to clean up their transportation sector without massive upfront costs. The technology is already here—millions of cars are ready to use E85 today. All that is missing is the infrastructure and the public will to create it. Residents have the power to supply both.