in
Is your petrol car misfiring, smoking heavily, or refusing to start? Don't force it. Call us for in to clear the dense diesel out of your petrol system safely.
Who We Are
Trusted in
Wrong Fuel in Car UK has recovered over 10,000 misfueled vehicles across England, Wales, and Scotland. Our SPA-certified mobile technicians are GPS-dispatched from the nearest available unit — no call centres, no subcontractors.
We carry full motor trade and public liability insurance. All contaminated fuel is disposed of legally under our Environment Agency waste carrier licence. We operate 24/7, 365 days a year.
The Service
Professional in - Process Details
Petrol engines cannot ignite heavy diesel fuel properly. If you've put diesel in a petrol car, the engine will start to misfire heavily as the spark plugs become coated in oily diesel soot. The car will likely judder violently, lose power, and produce excessive smoke from the exhaust before eventually cutting out entirely.
The biggest risk is to your catalytic converter. Unburnt diesel pushed into the exhaust system can coat the catalyst monolith, rendering it useless and requiring an expensive replacement (often over £1,000). If you experience these symptoms after filling up, switch off the ignition immediately. A professional drain and flush can clean the system and prevent catalyst damage.
check_circle What's Included
- checkOn-site fuel contamination diagnosis
- checkComplete tank evacuation of heavy diesel
- checkFull fuel line and injector flush
- checkSpark plug inspection and cleaning if needed
- checkFresh correct fuel added & engine verified
- checkFull VAT receipt for insurance claims
✓ Do This
- Pull over immediately on noticing symptoms
- Switch off the engine at once
- Do not attempt to restart it
- Call us immediately
✗ Don't Do This
- Do NOT keep driving to 'burn it off'
- Do NOT try to dilute it with more petrol
- Do NOT go to a garage — call us first
- Do NOT ignore the issue
Simple Process
How Works in
Call Us
Give us your location, vehicle details and fuel situation. We confirm price and dispatch immediately.
We Arrive
Our fully equipped mobile unit arrives in an average of 25 minutes, ready to work immediately.
Drain & Go
We drain, flush, re-prime with correct fuel, verify the engine, and get you moving again.
Reviews
What Our Customers Say
“Car just wouldn't start after the petrol station. Realised I used the black pump. They drained it and got it firing again.”
Kevin L.
Student
Non-Starter Fix
“Engine was misfiring terribly and smoking. A quick drain and flush from these guys and the problem completely vanished.”
Fiona D.
Photographer
Misfire Resolved
“They knew exactly what the symptoms meant, arrived fast, and had the right equipment to clear the thick diesel out.”
Jason Y.
Mechanic
Expert Flush
FAQs
Common Questions
How is it possible to put diesel in a petrol car?expand_more
Can I just top it up with petrol to dilute it?expand_more
Will my spark plugs need replacing?expand_more
What happens to the catalytic converter?expand_more
Will my car start immediately after the drain?expand_more
Reach Us
Get Help in
For emergencies call directly — 24/7. For quotes use the form and we will call back within the hour.
24/7 Emergency
07886 078 646