Wrong fuel in a Fiat Croma? Diesel in your Petrol Fiat?

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


Putting Diesel in a Petrol Fiat is a common mistake. And what you want to do about it is based on a variety of factors. In the event that you would like to find out what to do about it then read on.
Listed below are the most important variables to be aware of whenever choosing whether to get a fuel drain:

  1. How much Diesel did you put into the Fiat, considering that the fuel capacity of your Fiat Croma is in most cases about 62 litres?
    1. A small amount of Diesel, as little as 3.1 litres of Diesel in a Petrol Croma will most of the time not necessarily be a huge problem. Experience has demonstrated to us that quantities less than 3.1 litres (which is 5% of the fuel tank volume) is generally capable of being sufficiently diluted simply by thoroughly filling up the remainder of the tank with the correct fuel.
      It's highly uncommon to encounter a vehicle experiencing problems because of lower than 5% incorrect fuel contamination. Bear in mind that it is very infrequently found - in no way impossible to encounter. You will discover some motor vehicles that will not stand any level of contamination in the slightest.
    2. Anywhere between 3.1 and 6.2 litres of Diesel in the Fiat (5 to 10%) is really a 50/50 situation. Our working experience has revealed that as many people get away with this as those people who don't. When figuring out whether to risk it and just top it up bear in mind that it is the same thing as gambling all of it on black - you've got a 50/50 possibility of it being ok.
    3. Anything in excess of 6.2 litres of Diesel in a Petrol Croma ought to right away be removed because your probability of succeeding with that quantity of contamination is certainly less than one in fifty - genuinely long odds.
  2. Put Diesel in a Petrol Fiat and drove it: Have you noted any performance issues as a result of putting the bad fuel in your Croma? If that's the case, have it removed regardless of the quantity of Diesel or even the contamination ratio. Proceeding to drive running a vehicle that is already beginning to suffer from the effect of fuel contamination will probably definitely end up in even more damage affecting your fuel system components.
  3. Do you need security?
    Simply get it removed. No matter the contamination ratio, there is invariably a certain level of risk resulting from driving a Petrol vehicle on fuel contaminated with Diesel. Likely consequences of driving on the incorrect fuel include things like the motor refusing to start, running unevenly, losing power, degradation of the high-pressure pump, worn out or clogged injectors, and so forth. These are several of the most typical Diesel in Petrol symptoms, and in the event that you detect any of them stop driving and have it drained asap.

Do not just have any jack-of-all-trades to try to repair your automobile. We are Fiat experts and hold the qualifications and experience required to make certain that you get back on the road with minimal hassle or trouble.

Put Diesel in a Petrol Fiat

Accidentally put Diesel in a Petrol Fiat? Or perhaps even put contaminated fuel in your Fiat Croma?

Call us for Help & Advice

Call us and receive straightforward recommendations and practical help for your specific circumstances

We show up and do the fuel drain

We are able to reach you to do the fuel drain & flush right there on scene

Once carried out You Get Going Again

As soon as we are done you are able to get back on your way and get on with your day

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain experts in the UK, offering countrywide service, for Fiat motorists especially. We predominantly fix:

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

We are Fiat specialists and have successfully drained thousands of Petrol Fiat vehicles. Regardless of whether it is roadside, on a station forecourt, or even at home, we can get you on the road once again.

The Procedure

The system of draining Diesel from a Petrol vehicle is basically identical for the majority of cars. Obviously it does vary to some degree as each brand has their particular fuel system. However it still essentially observes the below guidelines:

Petrol in Diesel Fiat

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Fiat

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Fiat

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.

Get in Touch

In case you have any concerns or want assistance please Contact Us!
We can get you moving again.

24/7 Fiat 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