Regan Brown
E85 is a blend of ethanol and gasoline, with ethanol making up between 51% and 85% of the mixture. E85 is a popular choice for motorists due to its lower price point than regular gasoline. However, it is important to note that E85 typically results in lower miles per gallon (MPG). This is because ethanol has a lower energy density than gasoline, meaning more fuel is required to generate the same amount of energy. The loss in MPG is dependent on the ethanol content of the fuel, with higher ethanol content resulting in lower MPG. Despite the lower MPG, some motorists may still save money due to the price difference between E85 and gasoline.
Characteristics and Values of E85
| Characteristics | Values |
|---|---|
| Composition | 85% ethanol and 15% unleaded gasoline |
| Ethanol Content Fluctuation | Between 51% and 85% |
| Pros | Renewable, cleaner burning, reduced greenhouse gas emissions, cheaper, safer to handle |
| Cons | Reduced fuel economy, availability, water absorption, engine compatibility |
| Power Gains | 5% to 15% |
| Cost Saving | 33 cents or 9.7% less than regular gas |
| CO2 Emissions | 0.5% less than gasoline |
| Number of Stations in the US | 4,500 (mostly in the Midwest) |
Explore related products
What You'll Learn
E85 fuel economy
E85 is a blend of 85% ethanol and 15% unleaded gasoline. However, federal regulations specify that E85 must contain between 51% and 85% ethanol, so some stations sell E85 with less ethanol and more gasoline content than advertised.
E85 is a popular choice for motorists due to its lower price compared to regular gasoline. In June 2021, the average price for E85 in California was $2.85, while the average price for gasoline was $4.22, making E85 32% cheaper.
However, E85 typically results in lower miles per gallon (MPG) than regular gasoline. Edmunds conducted a test in 2009, driving from San Diego to Las Vegas and back, a total of 667 miles. Using regular gasoline, the vehicle achieved an average fuel economy of 18.3 mpg. In comparison, E85 achieved an average fuel economy of 13.5 mpg, 26.5% worse than gasoline. This lower MPG with E85 is because ethanol has a lower energy content per gallon than gasoline and burns faster due to its higher volatility.
Despite the lower MPG, some motorists may still save money by using E85 due to its lower price. Even with a 25% reduction in mileage, E85 can result in a 7% cost saving on fuel. Additionally, E85 can help keep engines in good shape as ethanol is an excellent solvent that cleans the fuel injectors, valves, engine, fuel lines, and exhaust system, reducing deposits that can decrease fuel economy.
For motorists seeking the best fuel economy with E85, choosing E85 fuel with the highest gasoline content is recommended, as the higher the ethanol content, the lower the MPG. E85 with an ethanol content between 10% and 85% can, in some cases, provide better fuel economy than regular gasoline.
Fuel Pump Assembly Costs for Mustang Owners
You may want to see also
Explore related products
E85 availability
E85 is available at over 4,200 public stations in 43 states across the United States. In 2014, there were 2,386 stations in the U.S. selling E85, most of them in the Midwestern Corn Belt states. California had only 74 E85 stations, mainly in Southern California and the San Francisco Bay area.
E85 is a blend of 85% ethanol and 15% unleaded gasoline. However, the actual ethanol content of E85 may fluctuate, and it's common to see ethanol content in a winter blend of E85 reduce to perhaps 60-70% to aid starting in very cold climates. Federal regulations specify that E85 must contain between 51% and 85% ethanol.
While not all gas stations offer E85 fuel, there are flex-fuel alternatives available across the country. It's possible to use E85 in a vehicle that is not specifically flex-fuel capable by using eFlexFuel conversion kits, which allow users to blend gasoline and E85 however they like.
Flex Fuel Engines: Costly Conversion or Smart Investment?
You may want to see also
Explore related products
![[2-Pack] Reusable Ethanol Testing Kit - Wide Mouth Fuel Test Bottle for E85 and Ethanol Levels - Fewer Spills and Clear Results in Minutes - Test Hundreds of Times - Two Ethanol Test Bottles Included](https://m.media-amazon.com/images/I/71sU-J0V11L._AC_UL320_.jpg)
E85 performance
E85 is a blend of fuel that contains 85% ethanol and 15% unleaded gasoline. It is a popular choice for car enthusiasts looking to increase their engine's performance. It has a higher octane rating than gasoline, which means it can withstand more compression before detonating, making it ideal for high-performance engines. This also means it can support more boost and increased power output.
E85 has a higher latent heat of evaporation than gasoline, which means it absorbs more heat from the combustion charge as it changes from liquid to vapour. This, coupled with its high octane rating, makes the fuel resistant to detonation, allowing for more boost, compression, and ignition advance. It also allows for a degree of immunity from knock, which lends itself to high boost turbo engines or high compression N/A engines. Even in naturally aspirated engines that are not knock-limited, a 5% increase in power can be expected.
E85 is also better for the environment, as ethanol is a renewable resource that reduces greenhouse gas emissions and dependence on fossil fuels. It is also safer to handle, as it is less volatile than gasoline, making it easier to store and transport. It is a cleaner-burning fuel that does not leave deposits when it burns, unlike gasoline, which can decrease a vehicle's fuel economy over time.
However, E85 may not be compatible with all engines, and some vehicles may need an upgrade to their fuel system to handle the increased fuel flow. It also has lower energy content than gasoline, which means a reduction in fuel economy. It burns faster than gasoline, so your engine may use up the fuel faster. The loss in MPG is also dependent on the ethanol content of the fuel, with higher ethanol content resulting in lower MPG.
Global Oil Consumption: How Much Fuels Our World?
You may want to see also
Explore related products
E85 cost
The cost of E85 fuel is influenced by several factors, including location, availability, and fuel economy.
Firstly, the availability of E85 fuel can impact its cost. In 2014, there were 2,386 stations in the United States selling E85, mostly in the Midwestern Corn Belt states. If an E85 pump is out of the way, it can result in a premium just to access the fuel. For example, a 20-mile round trip to an E85 pump might incur an additional $4 to $5 expense. This limited availability can also affect the price of E85 fuel. Elevated demand for E85 may lead to upward pressure on prices, and oil companies may respond by lowering gasoline prices to remain competitive, potentially discouraging the use of E85.
The fuel economy of E85 is another factor that influences its cost. E85 fuel typically has a lower energy content per gallon than gasoline, resulting in reduced fuel efficiency. This means that a vehicle may consume more E85 fuel to travel the same distance as with gasoline, increasing the overall fuel cost. The ethanol content in E85 fuel can also vary, with federal regulations allowing for a range of 51% to 85% ethanol. The higher the ethanol content, the lower the miles per gallon (MPG), so the ethanol composition directly impacts the cost per mile.
However, the price of E85 fuel itself is often lower than gasoline due to reduced taxation. The performance advantages of E85, such as its higher octane rating and resistance to detonation, can also make it a cost-effective choice for certain engines. E85 is known to produce more power, allowing for more boost, compression, and ignition advance.
Overall, while E85 may offer cost savings in certain scenarios, the fuel economy considerations and varying ethanol content can make it challenging to predict the exact cost impact of using E85 fuel.
The High Cost of Ship Fuel: How Much?
You may want to see also
Explore related products
E85 and engine compatibility
E85 is a mixture of 85% ethanol and 15% unleaded gasoline. It is a renewable, plant-based fuel with a higher latent heat of evaporation than pump gas, making it a more efficient cooling agent. It also burns cleaner than pure gasoline, resulting in fewer emissions. However, E85 has a lower energy content than gasoline and vehicles running on it return lower fuel economy.
Since 1994, it has been US federal law that vehicles must be compatible with ethanol. This means that engine damage caused by E85 hasn't been an issue in newer vehicles. However, vehicles produced before 1994 were not required to be compatible with ethanol-based fuel, and their stock parts may not be "immune" to ethanol. Ethanol can corrode some materials, leading to serious engine damage over time.
Some vehicles are specifically designed to support both gasoline and E85. These vehicles operate just like gasoline-only automobiles, and the driver may not even realize they are using E85. Examples include the Audi A5 Cabriolet and Coupe, the Land Rover Range Rover, the Chevrolet Equinox, and the Ford Focus.
For vehicles that are not E85-compatible, conversion kits are available that allow them to use E85. These kits typically include a fuel composition sensor that tells the ECU how much ethanol is present in the fuel, allowing it to alter the fuel and ignition calibration accordingly. However, it is important to note that using E85 in a vehicle that is not designed for it can cause engine damage.
While E85 has the potential to provide more power and better performance, it is important to consider the compatibility of your vehicle's engine and fuel system before making the switch. Consulting with a technical team or a mechanic can help determine if your vehicle is suitable for E85 and if any modifications are necessary.
Bio Ethanol Fuel: What's the Cost?
You may want to see also
Frequently asked questions
Yes, E85 fuel generally results in lower miles per gallon (MPG) compared to regular gasoline due to its lower energy content per gallon. The reduction in MPG can range from a few percentage points up to 25%.
E85 fuel has a lower energy density than gasoline, which means more fuel is required to generate the same amount of energy. This is because ethanol has oxygen in its molecule, requiring less air to combust.
On average, E85 fuel can result in a 15-25% reduction in fuel economy. However, the exact amount depends on the ethanol content, with higher ethanol content leading to lower MPG.
E85 fuel has several potential advantages. It is typically priced lower than gasoline, and it can provide better fuel economy in some cases due to its ability to clean fuel injectors and valves. Additionally, E85 fuel produces lower carbon dioxide emissions and has a higher octane rating, leading to improved engine performance.
To optimise fuel efficiency when using E85, choose blends with lower ethanol content, as these blends will be closer in composition to gasoline and provide similar MPG. Additionally, consider using conversion kits that allow you to blend gasoline and E85 fuel to achieve your desired fuel composition and control fuel consumption.
