
Putting the wrong fuel in your car is a common but expensive mistake, with around 150,000 UK drivers making this error each year. Misfuelling can lead to hefty repair bills, with costs ranging from £200 to drain and clean your fuel tank, to £2,000 to repair an engine, and up to £9,000 to replace it. While some insurers offer cover for misfuelling, it is not typically included in standard auto insurance policies. This means that car insurance usually does not cover engine damage or the costs of draining your fuel tank due to a mistake. However, certain insurers may provide coverage for misfuelling as an optional extension or add-on to the standard policy.
| Characteristics | Values |
|---|---|
| Is wrong fuel in car covered by insurance? | In most cases, no. |
| How common is misfuelling? | Very common. Around 150,000 UK drivers put the wrong type of fuel in their cars each year. |
| What to do if you've put the wrong fuel in your car? | Do not start the engine or drive the vehicle. Contact a professional mechanic or tow truck service to have the fuel drained and the system flushed to prevent potential damage. |
| What are the repercussions of misfuelling? | Rattling sounds in the car, engine damage, repair bills that could run up to thousands of dollars. |
| How to avoid misfuelling? | Put a sticker on your car's petrol cap telling you which fuel to use, stay alert and concentrate when you're at the pump, always check you've got the right fuel before you press the trigger. |
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What You'll Learn

Misfuelling is not covered by most insurance policies
Misfuelling is a common mistake, but it can be a costly one. It happens when a driver fills their tank with the wrong type of fuel, which can lead to engine damage and hefty repair bills. Unfortunately, most car insurance policies do not cover misfuelling, and the driver is usually left to foot the bill for any repairs or towing services.
Misfuelling is not typically covered by auto insurance policies. It is considered a mistake made by the driver, and insurance usually does not cover expenses arising from fuel contamination. This means that the driver is responsible for any costs associated with draining the fuel tank and repairing or replacing the engine. The price to fix a car from a fuelling mishap can be steep, ranging from $200 for minor issues to $2,000 for a full flush, and as much as $9,000 to replace an engine.
While it is rare, some auto insurance policies may offer optional coverage extensions that provide limited coverage for misfuelling incidents. These extensions are not common, and the level of coverage can vary depending on the insurance provider and their specific policy terms. Some insurers offer cover for misfuelling, but it differs significantly between companies. Some insurers cover the cost of everything, while others may only pay out for the tank to be cleaned and drained.
It is important to note that misfuelling can have severe consequences for your vehicle. In extreme cases, it could lead to a car being written off. Therefore, it is crucial to take immediate action if you have mistakenly filled your vehicle with the wrong fuel. Do not start the engine or drive the vehicle. Contact a professional mechanic or tow truck service to have the fuel drained and the system flushed to prevent potential damage.
To determine if your insurance policy covers misfuelling, carefully review your policy documents or contact your insurance provider. It is also worth considering that making a claim for misfuelling may increase your premiums when it comes to renewal.
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Some insurers offer misfuelling cover as an add-on
Putting the wrong fuel in your car is a common but expensive mistake. It can cost around £200 to drain and clean your fuel tank, £2,000 to repair an engine, and as much as £9,000 to replace it. Unfortunately, in most cases, your car insurance does not cover the wrong fuel in a car. Most insurers do not offer insurance for fuel contamination or misfuelling. This means that car insurance does not cover engine damage or the costs of draining your fuel tank due to a mistake.
However, some insurers offer misfuelling cover as an add-on. This can make insurance more expensive. If your insurer does cover misfuelling, you should contact them as soon as possible to make a claim. You may have to pay an excess, which is a chunk of money that you pay towards the claim. It's important to check your policy document to see if you're covered for misfuelling, and if anything is unclear, contact your insurance provider.
Misfuelling cover is not often found as a standard feature of car insurance. For example, out of 325 comprehensive car insurance policies on Defaqto, only 14% cover misfuelling as standard. Some insurers cover the cost of everything, but others may only pay out for you to get your tank cleaned and drained. It's a good idea to compare quotes from multiple companies to find the best auto insurance rates for you.
If you've put the wrong fuel in your car, it's important to take immediate action. Do not start the engine or drive the vehicle. Contact a professional mechanic or tow truck service to have the fuel drained and the system flushed to prevent potential damage. You will likely be responsible for the cost of these services.
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Misfuelling can lead to engine damage and hefty repair bills
Misfuelling can have serious consequences for your engine and your wallet. Putting the wrong fuel in your car can lead to engine damage and costly repairs. The severity of the damage depends on the type of fuel used and the engine in your car. For example, diesel fuel pumps need lubrication to work properly, but if petrol is added, it acts as a solvent, dissolving the lubricant and causing friction between metal parts. This can lead to engine misfires, clogged fuel injectors, and even permanent engine damage. In some cases, the engine may need to be replaced entirely, resulting in a hefty repair bill.
The cost of repairing or replacing the engine can be significant, ranging from $200 for minor issues to $2,000 for a full flush of the fuel system. In the UK, it can cost around £200 to drain and clean the fuel tank, £2,000 to repair an engine, and up to £9,000 to replace it. The more wrong fuel that has been added, the worse it is for the engine, leading to longer repair times and higher costs.
It is important to act quickly if you realize you have put the wrong fuel in your car. Do not start the engine or drive the vehicle, as this can lead to costly damage. Contact a professional mechanic or a specialist service to have the fuel drained and the system flushed to prevent potential damage. The process of draining wrong fuel from a vehicle can take anywhere from a few minutes to a few hours, depending on the amount of fuel and the accessibility of the tank.
While some insurers offer cover for misfuelling, it is not typically included in standard policies. More companies are excluding misfuelling from standard policies and offering it as an add-on, which can increase insurance costs. It is important to check your policy document to see if you are covered for misfuelling and contact your insurer as soon as possible if you are. However, even if you have coverage, you may still have to pay an excess or a portion of the claim.
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Immediate action to take if you've put the wrong fuel in your car
Putting the wrong fuel in your car is a common mistake, but it can have serious consequences. Misfuelling can cause damage to your engine, resulting in costly repairs or even a complete engine replacement. Therefore, it is important to take immediate action if you realize you have put the wrong fuel in your car. Here are the steps you should take:
Do Not Start the Engine: If you realize your mistake before starting the car, do not turn on the engine. Starting the car with the wrong fuel can cause serious damage to the engine and fuel system.
Call for Help: Contact a professional mechanic or a tow truck service to have your car towed to a repair shop. A professional will need to drain the incorrect fuel from the tank and flush the system to prevent further damage.
Drain the Fuel: The wrong fuel must be drained from the tank as soon as possible. This process can range in cost from $200 for minor issues to $2,000 for a full flush, depending on the extent of the problem.
Check for Damage: Have a professional thoroughly inspect your car for any damage to the fuel system or engine. This includes checking for any clogged fuel injectors or filters, as well as assessing the fuel pump and injectors for any necessary repairs or replacements.
Contact Your Insurer: Get in touch with your insurance company as soon as possible to inform them of the situation. While many insurance policies do not cover damage from misfuelling, some may offer specialty riders or extensions that provide limited coverage for such incidents. Check your policy document carefully and clarify with your insurer if anything is unclear.
Consider Additional Coverage: If your current policy does not cover misfuelling, consider shopping around for insurance that does. Some insurers offer misfuelling cover as an add-on to standard policies, which can increase your overall insurance costs but provide valuable protection in the event of a mistake.
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How to avoid putting the wrong fuel in your car
Putting the wrong fuel in your car can have serious consequences, from engine damage to costly repairs. It is, therefore, a good idea to take preventative measures to avoid this mistake. Here are some tips to help you avoid putting the wrong fuel in your car:
Be Vigilant and Mindful While Refuelling:
This cannot be stressed enough. Most cases of misfuelling occur due to absentmindedness. Be alert and focused when you're at the pump. Double-check the fuel type recommended for your car before selecting the nozzle. Take your time and avoid distractions or rushing through the process.
Know Your Fuel Types and Their Nozzles:
Familiarize yourself with the different fuel types and their corresponding nozzle sizes. Diesel pumps typically have larger nozzles that usually won't fit into a gasoline tank's opening. Gas nozzles are smaller and could fit into a diesel engine, so be especially cautious with these.
Check Your Vehicle's Specifications:
Your vehicle's owner's manual will specify the required fuel type. This information may also be found inside the door of your gas tank. Knowing the correct fuel for your car is crucial to avoiding misfuelling.
Pay Attention to Warning Signs:
If you realize your mistake before starting the engine, consider yourself lucky. Stop and do not turn on the ignition. Call for a tow truck or a professional mechanic to drain the incorrect fuel and flush the system. Some warning signs of misfuelling include unusual engine noises, reduced performance, engine misfiring or knocking, excessive smoke, and the "check engine" light turning on.
Consider Fuel Additives with Caution:
Drivers sometimes mistake AdBlue for a fuel additive, but it is an exhaust fluid that can cause damage if it ends up in your engine. Always double-check the additives you use and ensure they are compatible with your vehicle.
While misfuelling can be a costly mistake, following these simple steps can help you avoid it. Stay alert, know your vehicle's requirements, and be mindful of any warning signs to keep your car running smoothly.
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Frequently asked questions
Putting the wrong fuel in a car is typically not covered by insurance. However, some insurers may offer cover for misfuelling as an add-on or as part of a high-coverage policy.
If you've put the wrong fuel in your car, do not start the engine or drive the vehicle. Contact a professional mechanic or tow truck service to have the fuel drained and the system flushed to prevent potential damage.
The cost to fix a misfuelled car can range from £200 to drain and clean your fuel tank to £2,000 to repair an engine or up to £9,000 to replace it.
Signs that you've misfuelled your car include a check engine light, rattling sounds, or the car not starting.
To avoid misfuelling your car, stay alert and concentrate when you're at the pump. Always check that you've got the right fuel before you start filling up, and don't rely on the colour of the petrol hose or nozzle.











































