Petrol in Diesel in Monument
Wrong fuel in Monument? Whether it's petrol in diesel on a forecourt or a mistake spotted on the driveway, Wrong Fuel In The Car drains and flushes it on-site so you can get back on the road the same day.

Based across the UK, we're regularly in Monument and the surrounding area — Hanwell, Harold Wood, Havering Atte Bower and Hersham included — with the London road network keeping response times short.
Coverage at a glance — Monument
| Service area | Monument, Greater London |
|---|---|
| Postcode | EC3R |
| County | City of London |
| Distance | About 2.1 miles from London centre |
| Nearest routes | the London road network |
| Typical response | 30–60 minutes |
| Time on site | 45–90 minutes |
| Price from | £89 |
| Availability | 24/7, 365 days a year |
| How to book | Call 0800 170 0644 |
Prices & response times reviewed October 2026.
Monument lies about 2.1 miles from London centre, in City of London. We reach it alongside neighbouring Billingsgate, Leadenhall, Royal Exchange and Lloyd S Of.
How a petrol in diesel works in Monument
- Call 0800 170 0644 and describe the vehicle and what went in.
- We quote the full price up front and head to you in Monument.
- We drain the wrong fuel and flush the system on-site.
- We add clean fuel, test-start, and you're on your way — usually within 45–90 minutes.

Typical prices
| Situation | From | Time on site |
|---|---|---|
| Car, engine not started | £89 | 45–90 minutes |
| Engine started / fuel circulated | £149 | 1–2 hours |
| Van or large tank | £169 | 1–2 hours |
| Driven / motorway / out-of-hours | Quoted on call | On-site assessment |
Every job is fully quoted by phone before we're dispatched — the price depends on your vehicle, tank size and whether the engine was run.
What we drain
- Petrol in a diesel engine (the most common — and most damaging — misfuel)
- Diesel in a petrol engine
- AdBlue accidentally put in the diesel tank
- Unleaded in a diesel
- Red or agricultural diesel in a road vehicle
- Contaminated fuel — water, dirt or mixed fuel
Other services in Monument
in MonumentUnleaded in Diesel
in MonumentAdBlue in Diesel Tank
in MonumentRed Diesel in a Road Vehicle
in MonumentContaminated Fuel Removal
in MonumentMobile Fuel Drain
in MonumentWrong Fuel Rescue
in MonumentFuel Drain
in Monument
Wrong fuel in Monument, whatever you drive
We drain cars, vans and commercials on-site. A few we help often:
Nearby areas we also cover
Immediately around Monument: Hanwell, Harold Wood, Havering Atte Bower, Hersham.
As a nationwide service, Wrong Fuel In The Car covers all of Greater London and the wider London — so wherever you are around Monument, help is on the way.
Wrong-fuel guides
Petrol in Diesel in Monument — FAQs
Do you cover Monument?
Yes — we cover Monument and nearby Hanwell, Harold Wood, Havering Atte Bower, Hersham around London, reaching you via the London road network.
What should I do right now?
Don't start the engine. If you're on a forecourt, put the car in neutral and push it clear of the pump, then call 0800 170 0644.
How much will it cost?
Call-outs start from £89. We quote the full price on the phone before we set off, based on your vehicle and situation.
How quickly can you get to me?
Typically around 30–60 minutes, depending on where you are and traffic. We run 24/7, 365 days a year.
Will my car be OK afterwards?
In most cases where the engine wasn't run, yes — we drain and flush and you drive away. We'll tell you honestly if we think it needs a garage check.
Does my insurance cover this?
Misfuelling is often excluded from standard cover, though some policies and breakdown add-ons include it. Keep our paperwork in case you claim.