Bad fuel in a Mazda Cx-5? Diesel in a Petrol Mazda?

We can help!
Call us: 0333 366 0103
Mazda Fuel Drain


Putting Diesel in a Petrol Mazda is a common mistake to make. And its solution hinges on a number of things. In the event that you would like to find out what you ought to do about it then continue reading.
Listed here are the most important factors to keep in mind when determining whether or not to get the car drained:

  1. What amount of Diesel did you put in to the Mazda, taking into account that the fuel capacity of the Mazda Cx-5 is most likely about 58 litres?
    1. A tiny amount of Diesel, less than 2.9 litres of Diesel in a Petrol Cx-5 will generally not really be a huge problem. Experience has shown us that an amount less than 2.9 litres (which is close to 5% of the fuel tank volume) is sometimes able to be adequately diluted through wholly filling up the remainder of the tank with Petrol.
      It is extremely rare to come across a vehicle going through issues with under 5% wrong fuel contamination. Bear in mind that it is rare - in no way impossible to find. You will discover some automobiles that won't endure any level of contamination in the slightest.
    2. Between 2.9 and 5.8 litres of Diesel in the Mazda (from 5 to 10%) is really a 50/50 scenario. Our working experience has shown us that as many motorists get away with it as those who don't. When deciding whether or not to risk it and simply top it up remember that it is much like wagering all of it on black - you have got a 50/50 possibility of it working out.
    3. Anything above 5.8 litres of Diesel in your Petrol Cx-5 should promptly be removed as your probability of driving with this amount of contamination is more than likely below one in fifty - truly big odds.
  2. Put some Diesel in a Petrol Mazda and drove it: Have you seen any performance difficulties as a result of putting the bad fuel in your Cx-5? If so, have it removed no matter the amount of Diesel or even the contamination ratio. Continually driving an automobile that is now starting to suffer from the effect of wrong fuel contamination will probably likely lead to progressively more damage being caused to the fuel system.
  3. Are you interested in assurance?
    You should get it emptied. Whatever the contamination percentage, there is invariably some degree of danger connected with driving a Petrol motor on fuel contaminated with the wrong fuel. Possible consequences of driving a car on the incorrect fuel include things like the engine not starting, running lumpy, decrease in power, degradation of the high-pressure pump, worn or clogged injectors, and so forth. These are a few of the most common Diesel in Petrol symptoms, and in the event that you recognise any of them cease driving and get it removed right away.

Don't simply have any unqualified mechanic to attend your automobile. We are Mazda specialists and have got the certification and knowledge needed to make sure that you are back on the road with a minimum of hassle or worry.

Put Diesel in a Petrol Mazda

Mistakenly put Diesel in a Petrol Mazda? Or possibly even put contaminated fuel in your Mazda Cx-5?

Call us for Assistance & Recommendations

Call us and get honest guidance and practical assistance for your precise circumstances

We come out and do a fuel drain

We would go to you to undertake the complete contaminated fuel retrieval & purge right there on scene

All done & You Get Moving Once again

As soon as we have finished you can get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain professionals in the UK, boasting nationwide cover, for Mazda motorists especially. We typically attend:

  • Unleaded petrol in Diesel Car
  • Diesel in Unleaded Petrol Auto
  • AdBlue contamination
  • Water contamination

We are Mazda specialists and have successfully drained hundreds of Petrol Mazda vehicles. Regardless of whether it's at the roadside, on a filling station forecourt, or even at home, we are able to get you going once again.

The Process

The technique of removing Diesel from a Petrol vehicle is generally similar for the vast majority of vehicles. Obviously it can vary a little as every make has their unique different fuel system. However it still generally observes the following guidelines:

Petrol in Diesel Mazda

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Mazda

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Mazda

Vehicle Restart

Get the car up and running again

View more


Hours a Day


Days a Week





Our Partners

Just some of the few people we work with to bring you the best petrol in diesel service possible

Diesel in Petrol FAQs

When someone has put Diesel in a Petrol car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Diesel in a Petrol car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Petrol car on Diesel cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Diesel can I get away with in a Petrol car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Petrol and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Call us

In the event that you have any questions or require our help please Contact Us!
We are able to get you going again.

24/7 Mazda Helpline

0333 366 0103

Our Corporate Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET

Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained