Contaminated fuel in your Hyundai Veloster? Diesel in your Petrol Hyundai?

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


Putting Diesel in a Petrol Hyundai is a fairly typical error. And what you should do about it hinges on a variety of factors. In case you would like to know what you should do about it then read on.
Let us discuss the main variables to think about when figuring out whether or not to have a fuel drain:

  1. Exactly how much Diesel did you put in the Hyundai, bearing in mind that the fuel tank capacity of the Hyundai Veloster is usually approximately 50 litres?
    1. A tiny amount of Diesel, something like 2.5 litres of Diesel in a Petrol Veloster will more often than not not really be a significant problem. Experience has proven to us that an amount less than 2.5 litres (which is almost 5% of the whole fuel tank) is oftentimes able to be adequately diluted simply by entirely filling up the rest of the tank with Petrol.
      It is rather uncommon to come across an automobile experiencing difficulties due to lower than 5% incorrect fuel contamination. Please remember it is rare - not impossible to find. There are a few cars that don't endure any level of fuel contamination at all.
    2. Anywhere between 2.5 and 5 litres of Diesel in the Hyundai (5 to 10%) is really a 50/50 scenario. Our expertise has shown us that as many people get away with this as all those who break down. Whenever deciding on whether to risk it and basically top it up remember that it is just like wagering everything on black - you have got a 50/50 chance of it working out.
    3. Anything over 5 litres of Diesel in your Petrol Veloster must straightaway be drained seeing as your probability of succeeding with that amount of contamination is almost certainly below one in fifty - seriously huge odds.
  2. Put some Diesel in a Petrol Hyundai and drove it: Have you observed any kind of performance concerns as a result of putting the bad fuel in your Veloster? If that's the case, get it emptied no matter the quantity of Diesel or even the contamination percentage. Continually driving a vehicle that is now beginning to suffer the consequences of fuel contamination can definitely bring about more and more harm affecting your fuel system parts.
  3. Are you interested in reassurance?
    Then simply just get it removed. Regardless of the contamination ratio, there is invariably some degree of threat linked with operating a Petrol motor on Petrol contaminated with the incorrect fuel. Possible consequences of driving a car on the wrong fuel include the motor not starting, running lumpy, decrease in power, degradation of the high-pressure pump, worn out or bunged injectors, and so forth. These are some of the commonest Diesel in Petrol warning signs, and should you notice any of them stop and have it drained right away.

Keep away from getting any jack-of-all-trades to attend your vehicle. We are Hyundai specialists and hold the certification and experience required to ensure that you are back on the road with minimum hassle or trouble.

Put Diesel in a Petrol Hyundai

Unintentionally put Diesel in a Petrol Hyundai? Or possibly even put contaminated fuel in your Hyundai Veloster?

Contact us for Help & Advice

Call us and receive honest guidance and practical assistance for your particular circumstance

We arrive and drain it

We are able to reach you to carry out the fuel drain & flush there on scene

Once carried out You Get Going Once again

Once we are done you will be able to get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain specialists in the UK, offering national cover, for Hyundai motorists particularly. We predominantly fix:

  • Unleaded petrol in a Diesel Car
  • Diesel in an Unleaded Petrol Car
  • AdBlue fuel contamination
  • Water fuel contamination

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

The Process

The system of getting rid of Diesel from a Petrol vehicle is fundamentally the same for most motor vehicles. As you can imagine it does vary to some extent as every manufacturer has their own distinct fuel system. However it still generally follows the below points:

Petrol in Diesel Hyundai

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Hyundai

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Hyundai

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 Questions

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

If you have any queries or want help please Contact Us!
We are able to get you going again.

24/7 Hyundai 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