Don’t panic! What you have to do is avoid starting your vehicle and just give us a call to help you out of this trouble and within no time we will reach you. By the way, it’s not just you who have put wrong fuel, but around 150,000 people put wrong fuel in car every year – roughly the same number of people as live in Guildford. So with this happening somewhere in the UK every three-and-a-half minutes, you’re far from alone if you find yourself in a predicament at the pump. How much damage you can do to your car depends on the type of engine you have by putting the wrong fuel in car, whether you’ve put diesel into a petrol or vice versa, how much you’ve put in, and whether the incorrect fuel has reached your car’s bloodstream. At this situation, you must call Mr Fuel Doctor. By calling Mr Fuel Doctor at the right time, you can minimize the damage of your car. If you have incidentally put wrong fuel in car then the most important thing to remember is not to switch your car on. By keeping the car entirely switched off, you maximize your chances of keeping wrong fuel contained in the tank where it can do less damage. As soon as the fuel starts being pumped from the tank towards the engine, the likelihood of an expensive repair job grows.