# What happens if you put diesel in a petrol car?

> Wrong Fuel In The Car — mobile wrong-fuel rescue across the UK. 24/7, 365 days a year.
> Phone: 0800 170 0644 · From £89
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- **Category:** Consequences

Diesel is thicker than petrol and won't ignite properly on the spark plugs, so the car typically misfires, smokes and stalls. It's generally less harmful than petrol-in-diesel, but the tank still needs draining and flushing before you drive.

**In an emergency:** don't start the engine and call 0800 170 0644.

## Contact
Call **0800 170 0644** — 24/7, 365 days a year. Do not start the engine after misfuelling; we drain and flush on-site, usually in 45–90 minutes.

*Source page for Wrong Fuel In The Car. Fuel Fixer Ltd, company no. 08520551.*