Introduction
Misfuelling happens when you’re in a rush, distracted, or driving a hire car. If you’ve put diesel in a petrol car, you’re not alone — and quick action is key.

1. How Diesel Affects Petrol Engines

• Petrol engines need a spark for ignition; diesel is harder to ignite.
• Causes clogging in fuel lines and injectors.

2. Common Symptoms of Diesel in a Petrol Car

• Engine won’t start or struggles to start
• Misfiring and rough idle
• Reduced acceleration

3. Risks of Driving After Misfuelling

• Blocked catalytic converter
• Damaged spark plugs
• Expensive engine repairs

4. What You Should Do Immediately

• Stop filling as soon as you realise
• Avoid starting the engine
• Call Wrong Fuel Doctors for a professional drain and flush

Fast response means less damage. Call us 24/7 for immediate roadside assistance anywhere in the UK.