Mercedes Mullins
Putting the wrong fuel in your car is a common mistake that can have serious consequences. The type of fuel and vehicle involved will determine the severity of the situation, with petrol in a diesel engine being the most damaging. If you realise your mistake before driving, do not start the engine or turn the key in the ignition. Get in touch with a professional mechanic to drain and flush the fuel from your car. If you have already started driving, pull over to a safe location and turn off the engine as soon as it is safe to do so. The longer the wrong fuel is left in the tank, the more damage it will cause.
| Characteristics | Values |
|---|---|
| What to do if you put the wrong fuel in your car? | Don't panic, but act quickly. Don't start the engine or keep driving, and visit a mechanic. |
| What happens if you put the wrong fuel in your car? | The wrong fuel can cause serious mechanical issues and damage to your engine and fuel system. |
| What should you do if you notice the error while still at the pump? | Take immediate action to minimize damage. |
| What should you do if you've already driven away? | Prompt action is essential to prevent serious vehicle issues and costly repairs. |
| What should you do if you've put petrol in a diesel car? | This is worse than putting diesel in a petrol car. It can cause the engine to run erratically or stall completely. |
| What should you do if you've put diesel in a petrol car? | This can clog up the system quite quickly. |
| What should you do if you've put petrol in a diesel car or vice versa? | Turn off the engine, put the car in neutral, and get it towed to a mechanic to have the fuel tank drained. |
| What should you do if you've added more than 3% petrol to a diesel car? | Get the car checked out by a professional mechanic to determine the extent of the damage and whether the car can be driven. |
| How long does it take to drain the wrong fuel from a vehicle? | It can take anywhere from a few minutes to a few hours, depending on how much fuel has been put in and how accessible the tank is. |
| How can you prevent putting the wrong fuel in your car? | Know what type of fuel your car requires and double-check before filling it up. Don't rely on the color of the hose or nozzle, and properly read the pump's trigger label and fuel grade indicator. |
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What You'll Learn
Don't start the car or keep driving
Putting the wrong fuel in your car can be a costly mistake, and it's important to act quickly to prevent further damage. If you realise your error before starting your car, do not turn on the ignition or start the engine. Get in touch with a breakdown assistance provider and explain the situation. If you have breakdown cover, you can use their app to get help. If you don't have cover, you can still get instant cover.
If you've already started driving, pull over to a safe location as soon as possible and turn off the engine. You will then need to get your car towed to a mechanic. The longer your engine runs with the wrong fuel, the more damage will be caused. Even short journeys with the wrong fuel will likely lead to major issues with your engine.
Once your car is with a mechanic, they will need to drain the fuel tank to remove the contaminated fuel and prevent further damage to your engine and fuel system. This process can be complex and time-consuming, depending on how much fuel has been put in the tank and how accessible it is. Modern vehicles have sealed tanks, which make it more difficult to access and drain the wrong fuel.
After draining the tank, the mechanic will need to flush and clean the fuel system. If the engine was running for a while on the wrong fuel, you may need to replace the injector valves, fuel lines, and fuel filter.
To prevent putting the wrong fuel in your car, make sure you know what type of fuel your car requires and double-check before filling it up. Don't rely on the colour of the hose or nozzle, and properly read the pump's trigger label and the fuel grade indicator. You can also put reminders in the car, like a sticker inside the fuel cap, to ensure you're using the right fuel.
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Get the car towed to a garage or fuel station
Putting the wrong fuel in your car is a more common mistake than you might think, but it can have serious consequences. It's worse to put petrol in a diesel car than diesel in a petrol car, but either way, you could damage your engine and its components. If you've put the wrong fuel in your car, the most important thing is that you do not start your vehicle. Instead, get the car towed to a garage or fuel station.
If you've put petrol in a diesel car, the car will likely run erratically or stall completely. The petrol will also likely damage the catalytic converter when it burns, as it creates excessive heat and pressure that the engine can't handle. This will lead to costly damage.
If you've put diesel in a petrol car, the diesel fuel will not combust correctly, leading to a lack of power for the car. Diesel in a petrol engine might not cause any permanent damage if you don't start your engine, but it still needs to be properly flushed.
No matter which type of wrong fuel you've put in your car, you should get the car towed to a garage or fuel station as soon as possible. A professional mechanic will be able to efficiently diagnose the fault, flush out the incorrect fuel, and get you moving again. The process of draining wrong fuel from a vehicle can take anywhere from a few minutes to a few hours, depending on how much fuel has been put in the tank and how accessible the tank is. Modern vehicles have sealed tanks, which make it more difficult to access and drain the wrong fuel.
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Drain the fuel tank
Putting the wrong fuel in your car can have serious consequences. It is worse to put petrol in a diesel car than diesel in a petrol car, but either way, you could damage your engine and its components. Incorrect fuel might ignite at the wrong time, or clog your fuel system, leading to reduced performance, stalling, and complete breakdowns. The longer your engine runs with the wrong fuel, the more damage will be caused, so it is important to act quickly.
If you realise your mistake before starting your engine, do not turn on the ignition or start the car. Put the car in neutral and call a professional mechanic to drain and flush the fuel from your car. If you have breakdown cover, you can use their app to get help.
If you have started driving, pull over to a safe spot and switch off the ignition as soon as it is safe to do so. Then, get in touch with a professional mechanic to drain and flush the fuel from your car.
Draining wrong fuel from a vehicle can take anywhere from a few minutes to a few hours, depending on how much fuel has been put in the tank and how accessible the tank is. Modern vehicles have sealed tanks, which make it more difficult to access and drain the wrong fuel, so the process can take longer. The process involves connecting an extraction hose to a drain plug to drain out the wrong fuel. Using a hose is the most common and straightforward method of draining a fuel tank.
If you can find the drain plug on your fuel tank, you can drain the fuel directly. The drain plug is usually located near the bottom of the fuel tank. Once you’ve located it, you can use a wrench to loosen it. As you loosen the plug, fuel will start to drain out. Make sure to have a wide-mouthed container, such as a basin, to catch the fuel from the tank. You can also purchase a fuel siphon device, which is a clear hose with a valve at the end. Make sure to keep safety in mind when draining your fuel tank, as fuel is flammable.
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Call a professional mechanic for help
Putting the wrong fuel in your car can have serious consequences, and it is important to act quickly. If you have put the wrong fuel in your car, you should call a professional mechanic for help. Do not start your vehicle or turn the ignition on, as this can lead to costly damage. Even short journeys with the wrong fuel will likely cause major issues with your engine.
If you have accidentally put diesel in a petrol car, do not start the engine. Diesel is thicker and oilier than petrol and can clog the fuel injectors and filters. If the engine is started, the car might run poorly, produce excessive smoke, and eventually stall. Long-term damage can occur if diesel circulates through the fuel system, which will require extensive repairs.
Putting petrol in a diesel car is worse than the other way around. Petrol will likely damage the catalytic converter when it burns, as it creates excessive heat and pressure that the engine can't handle. The car will likely run erratically or stall completely.
A professional mechanic will be able to drain and flush the fuel out of your car. This process can take anywhere from a few minutes to a few hours, depending on how much fuel has been put in the tank and how accessible it is. Modern vehicles have sealed tanks, which make it more difficult to access and drain the wrong fuel. The mechanic will also be able to determine the extent of any damage and whether the car can be driven.
If you have breakdown cover, you can use their app to get help.
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Check your insurance
Putting the wrong fuel in your car can have serious consequences, and it is important to act quickly. The wrong fuel can cause engine damage and other complications. The longer your engine runs with the wrong fuel, the more damage will be caused, so it is important not to start your engine and to get immediate assistance.
If you have breakdown cover, you can use their app or helpline to get help. If not, you can call a mobile mechanic or a specialist fuel recovery service to drain the wrong fuel and replace it with the correct type.
In terms of insurance, it is unlikely that your car insurance will cover the cost of removing the wrong fuel from your car. Most insurers do not offer insurance for fuel contamination or misfuelling, so your insurance will not cover engine damage or the costs of draining your fuel tank due to a mistake. However, it might be included if you have a high-coverage policy or mechanical breakdown insurance. Therefore, it is important to check with your insurance provider or read your policy in detail to find out if you are covered.
If the wrong fuel was pumped into your car by an attendant at a gas station, you may be able to sue for damages to recoup any repair and towing costs. If your vehicle's fuel system is contaminated due to an external event such as vandalism, your comprehensive coverage would likely pay for repairs. Similarly, if the fuel tank is damaged as a result of a collision with another vehicle or object, collision coverage would likely cover the replacement.
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Frequently asked questions
First, do not start the engine or turn on the ignition. If you have already started driving, pull over to a safe location as soon as possible and turn off the engine. Then, call a breakdown assistance provider and explain that you have misfuelled your car. Depending on where you are, waiting times can vary. Once your car has been towed to a garage or fuel station, the next step is usually to drain the fuel tank to remove the contaminated fuel.
Diesel fuel does not typically damage the motor or fuel system of a petrol-powered vehicle unless the engine is ignited and the fuel pump begins pumping diesel into the fuel line. However, diesel and petrol can cause serious mechanical issues when mixed, and if driven, may break down the car completely.
Petrol in a diesel engine will usually damage a lot of the seals. Diesel tends to lubricate the rubber-based seals in the system, but petrol dissolves them quite quickly. Petrol in a diesel car can also cause the engine to run erratically or stall completely.
Putting the wrong fuel in your car can cause serious complications, including damage to your engine and its components. Incorrect fuel might ignite at the incorrect time, or cause clogs in the fuel system, leading to reduced performance, stalling, and complete breakdowns.
