Sylvie Willis
Flex-fuel vehicles (FFVs) are capable of running on gasoline, ethanol, or a combination of the two in the same tank. FFVs are factory-made, and many vehicle owners are unaware that their car is an FFV. To determine if your car is an FFV, you can check for a yellow fuel cap, a badge, or a decal under the fuel door indicating E85 use. Additionally, you can refer to your owner's manual, which should specify which fuels are approved for your vehicle. Online tools are also available where you can enter your vehicle's make, model, year, and engine size to check if it is an FFV.
| Characteristics | Values |
|---|---|
| Fuel type | Gasoline, ethanol, or a combination of the two |
| Vehicle type | FFV (Flex-Fuel Vehicle) |
| Identification | Yellow fuel cap, badge, decal, or label indicating E85 compatibility |
| Owner's manual | Information on approved fuels for the vehicle |
| Vehicle Identification Number | May indicate E85 compatibility |
| Emissions decal | Information on approved fuels |
| Vehicle model | 2008 or newer for Chrysler, 2006 or newer for General Motors |
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What You'll Learn
Check the fuel cap
One of the easiest ways to determine if your car takes flex fuel is to check the fuel cap. Since 2008 (and since 2006 for General Motors), most flex-fuel vehicles (FFVs) have had yellow fuel caps. Some capless fuel fillers have a yellow ring around where you insert the fuel nozzle.
If your car has a yellow fuel cap, it is likely an FFV. However, it's important to note that not all FFVs have yellow fuel caps, and some vehicles with yellow fuel caps may not be FFVs. The best way to confirm that your car is an FFV is to check the owner's manual or the manufacturer's website, which will specify which fuels can be used.
The owner's manual for your car should indicate whether it is an FFV and which types of fuel are approved for use. This information may be buried deep in the manual, but it is important to check to ensure you are using the correct fuel for your vehicle. If you do not have a physical copy of the owner's manual, you may be able to find it on the manufacturer's website.
In addition to checking the fuel cap and owner's manual, you can look for other signs that your car is an FFV. Some FFVs have labels or decals on the fuel door indicating that they can use E85 fuel. Badges with terms like "E85," "Flex-Fuel," or "FFV" may also indicate that your vehicle can use flex fuel.
By checking the fuel cap, owner's manual, and looking for other indicators, you can determine whether your car takes flex fuel. Remember that FFVs are capable of operating on gasoline, ethanol, or a combination of the two, so understanding your vehicle's fuel capabilities is essential for proper fueling and maintenance.
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Check the fuel door
One way to determine if your car takes flex fuel is to check the fuel door. The fuel door is located on the driver's side of the car, next to the gas tank. It is usually colour-coded or has a decal indicating the type of fuel the car uses.
For example, a yellow fuel cap is a common indicator that a car is a flex-fuel vehicle (FFV). However, it's important to note that not all FFVs have a yellow gas cap, and this feature was introduced in 2008 models (2006 for General Motors).
In addition to the fuel cap colour, you can also look for a decal or sticker inside the fuel door that specifies the compatible fuels for your car. This sticker may indicate that E85 use is allowed, which means the car can run on a combination of gasoline and up to 83% ethanol.
If you own a Ford vehicle, the fuel door may also display the 8th character of the vehicle identification number. A "V" in this position typically indicates that the car is a flex-fuel model.
It's worth noting that some cars may not have any visual indicators on the fuel door itself. In such cases, you can refer to the owner's manual or use online tools like the "Check Your Car" tool provided by the Fuel Freedom Foundation. By entering your vehicle's make, model, year, and engine size, you can easily determine if your car is an FFV.
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Check the owner's manual
One of the most straightforward ways to determine if your car can run on flex fuel is to consult the owner's manual. This manual should have been provided by the car manufacturer and can be found in the glove compartment or the storage area of your vehicle. It typically contains detailed information about the specific model, year, and trim of your car.
In the owner's manual, look for a section that pertains to the fuel system or the engine. Here, you may find explicit information about the types of fuel that are compatible with your car. This information is usually presented clearly, and you may find a statement indicating that your vehicle is designed to operate on flex fuel or E85 fuel, which is a common type of flex fuel. Additionally, there may be details about the fuel tank's capacity and the recommended fuel type, which can help confirm if your car is flex-fuel capable.
Another section to refer to in the owner's manual is the specifications or technical specifications section. This part of the manual provides comprehensive details about various aspects of your vehicle, including the engine, transmission, and fuel system. Look for any mention of "flex fuel" or "E85" in the descriptions of the fuel system or engine specifications. This information is typically included to highlight the vehicle's ability to use multiple fuel types.
Some owner's manuals may also include troubleshooting or maintenance sections that provide guidance on resolving common issues or optimizing vehicle performance. Within these sections, there may be references to flex fuel usage or recommendations for fuel types to enhance engine performance and fuel efficiency. These mentions can serve as an indication that your car is indeed designed to run on flex fuel.
If you carefully review these sections of the owner's manual and still cannot find a clear indication, it is possible that your vehicle is not flex-fuel capable. However, it is always worth consulting a trusted mechanic or a dealership to seek their expertise and gain a definitive answer specific to your car's make, model, and year. They can provide additional insights based on their experience and knowledge of the automotive industry.
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Check the Vehicle Emissions Control Information label
If you own a Chrysler, you can determine if your vehicle is E85 compatible by checking the Vehicle Emissions Control Information label, found under the hood. The Test Group Name is located on the right of the label, just below the engine size. Look for “Group: XXXXXXX.XXXX” and then check to see if the last letter falls within the letter groups on the right.
For Volkswagon, Mazda, Jaguar Land Rover, and Nissan, check your owner's manual, the fuel door, or fuel cap to see if your vehicle is E85 compatible. The FFV system is available in each of these manufacturers' models.
Some manufacturers started putting yellow gas caps on FFVs as of the 2008 model year (2006 for General Motors). Some capless fuel fillers have a yellow ring around where you insert the fuel nozzle. Some FFVs have labels on the fuel door indicating fuel type.
You can also refer to your owner's manual to see which fuels are approved to run in your vehicle. The manual will usually specify which fuels can be used in your vehicle. If you don't have a manual, it may be available on the manufacturer's website.
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Check online tools
There are several online tools available to check if your car is a flex-fuel vehicle (FFV). FFVs are capable of operating on gasoline and any blend of gasoline and ethanol up to 83%. E85, a blend of ethanol and traditional gasoline, can only be used in FFVs.
The Fuel Freedom Foundation's 'Check Your Car' tool allows you to enter your vehicle's make, model, year, and engine size to determine if it is an FFV. The Foundation is a non-profit working to reduce the cost of driving by opening the market to cheaper, cleaner, American-made fuel choices.
Pearson Fuels also offers a flex fuel car check on their website. They also have an E85 Gas App that can be downloaded to find E85 gas stations.
EFlexFuel provides E85 conversion kits for vehicles that are not FFVs. On their website, you can check the availability of conversion kits for your vehicle. They also offer a VIN Lookup tool, which uses your Vehicle Identification Number (VIN) to determine if your car is flex-fuel compatible.
Additionally, you can refer to the Alternative Fuels Data Center website, which provides information on how to identify an FFV and a search tool to find current FFV models.
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Frequently asked questions
You can check your owner's manual, the fuel door or cap, or the emissions decal under the hood to see if your vehicle is E85 compatible. Some badges with terms such as "E85", "Flex-Fuel", or "FFV" may indicate that your vehicle can use E85.
Some other signs that your car is a flex-fuel vehicle include a yellow gas cap or a yellow ring around where you insert the fuel nozzle.
A flex-fuel vehicle (FFV) is capable of operating on gasoline and any blend of gasoline and ethanol up to 83%.
Ethanol burns cleaner than gasoline and thus is better for the environment. Wide-spread use of flex-fuel vehicles would decrease dependence on foreign oil. You may also be eligible for tax incentives if you drive a flex-fuel vehicle.
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