Contaminated fuel in your Mazda 6 MZR-CD? Petrol in your Diesel Mazda?

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


Putting Petrol in a Diesel Mazda is a common mistake to make. And its remedy depends upon various things. If you want to find out what to do to sort it out then continue reading.
Listed below are the most crucial factors to take into account when figuring out whether or not to get a fuel drain:

  1. What amount of Petrol have you put into the Mazda, keeping in mind that the fuel capacity of your Mazda 6 MZR-CD is probably about 64 litres?
    1. Hardly any Petrol, as little as 3.2 litres of Petrol in a Diesel 6 MZR-CD will in most situations not be a significant problem. Experience has demonstrated to us that quantities less than 3.2 litres (almost 5% of the whole fuel tank volume) is often able to be adequately diluted simply by totally filling up the remainder of the tank with the right fuel.
      It is extremely rare to find a vehicle going through issues due to less than 5% wrong fuel contamination. Remember that it's infrequent - definitely not impossible to find. There are actually a few cars that will not endure any degree of contamination at all.
    2. Anywhere between 3.2 and 6.4 litres of Petrol in the Mazda (5 to 10%) is really a 50/50 scenario. Our practical experience has confirmed that as many drivers get away with it as those people who break down. Whenever you are deciding whether to risk it and just simply top it up remember that it is just like betting everything on black - you have a 50/50 chance of it being ok.
    3. Anything over 6.4 litres of Petrol in a Diesel 6 MZR-CD should as soon as possible be drained seeing as your probability of succeeding with this amount of contamination is almost certainly lower than one in fifty - seriously big odds.
  2. Put some Petrol in a Diesel Mazda and drove it: Have you observed any performance difficulties since putting the wrong fuel in your 6 MZR-CD? If that's the case, have it drained no matter the volume of Petrol or the contamination percentage. Proceeding to drive driving a car that is currently beginning to suffer the effects of wrong fuel contamination can only bring about more and more damage being done to the fuel system parts.
  3. Would you like security?
    You should get it drained. Regardless of contamination percentage, there is always a certain level of risk connected with driving a Diesel vehicle on Diesel contaminated with Petrol. Possible implications of driving a vehicle on the wrong fuel include the engine refusing to start, running lumpy, loss in power, wearing of the high-pressure pump, worn or bunged injectors, and the like. These are some of the most typical Petrol in Diesel signs and symptoms, and if you recognise any of them stop and get it removed immediately.

Stay away from having any unqualified mechanic to attend your vehicle. We are Mazda specialists and have the credentials and expertise needed to make certain you get back on the road with minimum hassle or trouble.

Put Petrol in a Diesel Mazda

By mistake put Petrol in a Diesel Mazda? Or perhaps even put contaminated fuel in your Mazda 6 MZR-CD?

Contact us for Help & Advice

Call us and receive straightforward recommendations and sensible assistance for your exact circumstances

We arrive and do the fuel drain

We can reach you to perform the fuel removal & cleanse there on scene

Once completed You Get Going Once again

When we have completed you can get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain authorities in the UK, having national cover, for Mazda motorists in particular. We mainly attend to:

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

We are Mazda specialists and have successfully drained thousands of Diesel Mazda vehicles. Regardless of whether it is roadside, on a station forecourt, or even at your house, we are able to get you moving once again.

The Process

The procedure of extracting Petrol from a Diesel vehicle is fundamentally the same for the vast majority of cars. Of course it may vary slightly as each manufacturer has their unique fuel system. Having said that it still fundamentally adheres to the below principles:

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

Petrol in Diesel Questions

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

I put Petrol in a Diesel 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 Diesel car on Petrol 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 Petrol can I get away with in a Diesel 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 Diesel 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 enquiries or need help please Contact Us!
We are able to get you on the road again.

24/7 Mazda Helpline

0333 366 0103

Our Business Office

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

Weekdays: 9am to 5pm

Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained