Petrol in Diesel?
Diesel in Petrol?

Welcome to our Sudbury Branch

If you’ve put the wrong fuel in your vehicle, don’t panic. Call our 24/7 team, and you’ll soon be back on the road.

Have You Put the Wrong Fuel in Your Car

If the answer is yes, don’t panic. A member of our expert rescue team can be with you quickly to fix it and get you back on the road – usually in less than an hour. We’re the leading misfuelling specialists, trusted by major vehicle and insurance companies. Make yourself safe and call now.

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About us

We offer an unrivalled mobile misfuelling service across East Anglia. We are:

Quick, Efficient and Affordable

Many car insurances or vehicle warranties don’t include misfuelling in their standard policies. Breakdown companies also don’t provide cover for wrong fuel issues. If you aren’t covered, you’ll be looking for a quick, affordable, and efficient solution. Wherever you are in East Anglia, we aim to reach you within the hour, whether at the petrol station forecourt, safely parked at the roadside or at home. And we are on call 24 hours a day, seven days a week.

So, whether it’s petrol in diesel, diesel or adblue in petrol, you can relax knowing we’ll quickly and efficiently handle your misfuelling mishap. And because you can make the affordable payment on the spot, you can move swiftly on with your day.

A Fully Trained and Friendly Team

One of our local, fully trained and licensed Wrong Fuel technicians will attend to you and your vehicle. We understand that you may be worried, but our friendly staff make sure that what may have felt like a disaster becomes nothing more than an inconvenience.

Environment Agency Approved

 The Environment Agency has strict regulations regarding the storage, transportation, and recycling of contaminated fuel. Wrong Fuel Rescue is fully registered and adheres to all Agency regulations. All contaminated fuel is recycled into biofuels, heating oil, and other uses, meaning nothing is wasted.

Our approved vehicles are equipped with the latest technology to ensure a safe and clean fuel transfer to meet and exceed Environment Agency regulations.

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Frequently Asked Questions

If you realise before starting your car, the most important thing is to avoid turning the engine on, which will circulate the wrong fuel into the system and potentially damage the engine. But if you have turned the engine on, don’t panic. The chance of any long-term damage to your vehicle is small. Put the car in neutral, remove the keys, get to a safe place and call Wrong Fuel Rescue. Let the filling station know a technician is on the way and ask for help to push your car to a safe place.


If you realise the mistake after you’ve driven away, again, don’t panic. Park somewhere safe, put the car in neutral, remove the keys, put on your hazard lights, and call Wrong Fuel Rescue.

Breakdown companies don’t usually cover the cost of incorrect fueling.

Petrol engines use spark plugs to ignite the fuel and cause combustion. If there’s diesel in the system, it will coat the spark plugs and clog up the fuel system. As a result, it might fail to start, misfire, give off smoke or cut out.


Putting diesel into a petrol car rarely causes severe or permanent damage. But to make it quick and easy for our technicians to drain your fuel system, you still want to avoid diesel circulating the engine. So, it’s best to get the diesel out as soon as possible to avoid expensive engine cleaning costs .

If you recently refuelled and can’t remember which fuel you put into your diesel car, these are some of the signs you might notice.


  • the engine warning and stop engine light appearing 
  • the vehicle shutting down
  • smoke from your exhaust
  • slow acceleration
  • a loud knocking sound when you accelerate
  • the engine stopping altogether
  • your car is struggling to restart 

Diesel engines use fuel as a lubricant in a compressed air system to ensure engine parts run smoothly. On the other hand, petrol increases friction between components, which is bad news for your diesel engine. Petrol also acts as a solvent, dissolving any lubricant (diesel) in the system, so even a small amount can be a problem.


The more petrol pumped through a diesel system; the more damage takes place. As a result, putting petrol into a diesel car is worse than the other way around and can cause expensive damage to your engine. But it’s worth noting that many modern diesel cars have a default safety mechanism that stops the vehicle from running for too long when petrol is in the system.

For most Wrong Fuel Rescue callouts, we drain the fuel, flush the system, and you are back on the road in less than an hour, with no long-term damage.


The damage is potentially more widespread if you’ve driven your car, especially when you’ve added petrol to a diesel system. In that case, you may need to replace parts such as the fuel pump, injectors and fuel lines or the whole fuel tank in more severe cases. You may need a new engine in the worst but thankfully rare case.

A petrol car with diesel added may require extensive cleaning to remove the diesel oil from the system.

 Prompt attention by wrong fuel rescue can often avoid these issues.

If you recently refueled and can’t remember which fuel you put into your petrol car, these are some of the signs you might notice.


  • smoke from your exhaust
  • your engine misfiring
  • the engine cutting out
  • your car failing or slow to restart 

Why Misfuelling is a Problem

Your car won’t run on the wrong fuel. It may or may not start, but if it does, it won’t run for long. Diesel and petrol engines work differently, with petrol engines using spark plugs to ignite the fuel and diesel engines using fuel as a lubricant.

It’s more common for petrol to have accidentally been added to a diesel vehicle, as petrol nozzles can easily fit into diesel filter necks. But whichever type of fuel contamination has taken place, the wrong fuel needs to be removed and the system flushed to get you back on the road. In more rare cases, damage to the engine or its component parts may need attention.

If something else, such as water, has made its way into your tank, there will be different problems that our specialist team and equipment can solve.

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