Wrong Fuel Repair by Misfuelled Car Fixer

January 29, 2026

Wrong Fuel in Your Car? Here’s How to Save Your Engine (and Your Wallet)

Wrong fuel repair by Misfuelled Car Fixer

It happens in a heartbeat. You’re tired after a long shift, distracted by the kids in the back seat, or perhaps you’ve just switched from a petrol work van to a diesel family car. You reach for the nozzle, start filling, and suddenly—the realization hits. You’ve put the wrong fuel in your tank.


First of all: Take a deep breath. You are not alone. Over 150,000 drivers in the UK make this mistake every year. At Misfuelled Car Fixer, we’ve seen it all, and we know exactly how to get you back on the road. Here is your emergency guide to handling a misfuel.


The Golden Rule: DO NOT Turn the Ignition


If you realize your mistake at the pump, do not start your engine. * If the engine is off: The wrong fuel is just sitting in your tank. It’s a simple "drain and flush" job.

  • If you start the engine: The fuel enters the pump and injectors. In diesel cars, petrol acts as a solvent, stripping away lubrication and causing metal-on-metal friction that can destroy your engine in minutes.

If you’ve already started driving and the car begins to splutter, pull over safely as soon as possible and kill the engine.


Why Choose Roadside Repair Over a Garage?


Many drivers' first instinct is to call their breakdown cover and get towed to a local garage. While this sounds logical, it’s often the most expensive and time-consuming route.

  • The Garage Way: You pay for a tow, wait for a slot in their schedule (which could be days), and often face high labor rates.
  • The Misfuelled Car Fixer Way: Our 24/7 nationwide mobile units come directly to you. We perform a professional fuel drain and system flush right there at the petrol station or roadside. Most of our customers are back on the road in under 60 minutes.


How the Process Works


When you call our emergency line, our local technician is dispatched immediately. Here’s what we do:

  1. Drain: We safely extract the contaminated fuel using specialized pumping equipment.
  2. Flush: We flush the entire fuel system with the correct fuel to ensure no residue remains.
  3. Refuel & Restart: We provide enough of the correct fuel to get you to the next station and perform a diagnostic check to ensure the engine is running smoothly.


Nationwide Service with a Local Touch


Whether you are stranded on a quiet lane in Kent, a busy commuter road in Stevenage, or near Stansted Airport in Bishop’s Stortford, we have a technician nearby. Our 24/7 coverage ensures that no matter where you are in the UK, help is only a phone call away.


Don't Let a Misfuel Ruin Your Day


A simple mistake shouldn't cost you thousands of pounds or days of stress. At Misfuelled Car Fixer, we provide a fast, fixed-price solution to get your day back on track.



Put the wrong fuel in? Call our 24/7 Emergency Line now at 0330 122 6640 for an immediate dispatch.