Wrong Fuel Carlislea service by Forecourt AssistanceCall 01293 248666Call
4.8/5 from 2,190 Trustpilot reviews24 hours, every dayFree advice · price before we travelFuel Fixer Ltd · 08520551

What happens if you accidentally put unleaded in a diesel car

What happens if you accidentally put unleaded in a diesel car? Same job as petrol in diesel, under the word on the pump. Do not start the engine; we drain it on site. Call 01293 248666 — a mobile technician comes to the vehicle anywhere across CA1 to CA6. Call-out £89 to £199, drain £199 to £1,999.

Tap to call 01293 248666

No premises, no recovery truck

The alternative to what we do is a recovery truck, a garage queue and a courtesy car you did not want. Wrong Fuel Carlisle sends a technician to CA1 to CA6 instead, and the job is normally finished where you are standing. Call 01293 248666. There is no Carlisle branch to drive to, which is rather the point.

Searchwhat happens if you accidentally put unleaded in a diesel car
What it isUnleaded in diesel
Where we coverCA1 to CA6
CostCall-out £89 to £199, drain £199 to £1,999, quoted in full before we travel
Time on siteAbout an hour
Hours24 hours, every day
Phone01293 248666

What happens if you accidentally put unleaded in a diesel car: what to do

The same failure, under the wording on the pump.

The mechanical reason the advice is always the same

Every drainer tells you not to start the engine, and it is not a sales line. The fuel path runs tank → lift pump → filter → high-pressure pump → injectors, and contamination only moves along it under power. Stationary, the problem stays in the tank where it is cheap to remove. Under power, it spreads into parts that are not.

Step by step

  1. Stop. Do not turn the key Whatever else happens, this is the decision that matters. Contamination only travels under power.
  2. Resist the urge to move it The instinct is to get out of the way. Unless you are somewhere dangerous, staying put is the cheaper instinct to follow.
  3. Safety before diagnosis If you are on a live carriageway, get out and get behind the barrier, and let the police or National Highways deal with the lane first.
  4. Phone 01293 248666 You will be asked four questions and given a price and an arrival window. Both are honest rather than flattering.
  5. On-site extraction The tank is emptied, the feed lines are flushed, fresh fuel goes in and the system is primed and run.
  6. Done, and the waste leaves with us Under a waste transfer note. It is not tipped and it is not sold back to you.

Reviews, including the bad ones

4.8 out of 5 across 2,190 Trustpilot reviews. Praise clusters on two things — speed of arrival, and technicians who do not make a driver feel stupid about a mistake anyone can make.

The complaint that comes up most is cost. It is a fair thing to raise: call-out £89 to £199, drain £199 to £1,999, the full price confirmed before a technician sets off, and if the job turns out to be different you are told before further work, not after.

Questions we get asked

How long will I be waiting?

Arrival depends where you are across CA1 to CA6 and what is already running. You get a realistic window on the call rather than an optimistic one.

Is this a garage?

No. Wrong Fuel Carlisle is mobile. A technician travels to the vehicle wherever it is standing.

What if I have already driven it?

Still call. Most vehicles driven a short distance are recoverable. Tell us how far you got, because it changes the kit we bring.

Do you cover all of CA1 to CA6?

Yes, from one rota — so being at one edge of the area rather than the other changes the arrival window, not the price.

Who you are dealing with

Wrong Fuel Carlisle is a service by Forecourt Assistance. Forecourt Assistance is a trading name of Fuel Fixer Ltd, company no 08520551, a company of Fuel Fixer International. Registered at Fairway House, Portland Road, East Grinstead, RH19 4ET. Fuel Fixer International is owned by Stockbridge Capital Holdings.

Across the network

Wrong Fuel Carlisle is one of the sites run by Forecourt Assistance, a trading name of Fuel Fixer Ltd, part of Fuel Fixer International, owned by Stockbridge Capital Holdings. Every site below belongs to the same company.

Background reading: Environment Agency.

Last updated · Reviewed by Rambo S, Wrong Fuel Expert