What happens when you put diesel in an unleaded car
What happens when you put diesel in an unleaded car? Less destructive than the reverse, but it still has to come out. Do not keep driving on it. Call 01293 248666 — a mobile technician comes to the vehicle anywhere across TS1 and TS3 to TS8. Call-out £89 to £199, drain £199 to £1,999.
What "local" actually means here
It means the number is answered by the people who send technicians to Middlesbrough, and that coverage of TS1 and TS3 to TS8 is a dispatch area rather than a marketing claim. It does not mean a building — Wrong Fuel Middlesbrough has no premises and never has. Call 01293 248666 and the equipment comes to you.
| Search | what happens when you put diesel in an unleaded car |
|---|---|
| What it is | Diesel in petrol |
| Where we cover | TS1 and TS3 to TS8 |
| Cost | Call-out £89 to £199, drain £199 to £1,999, quoted in full before we travel |
| Time on site | About an hour |
| Hours | 24 hours, every day |
| Phone | 01293 248666 |
What happens when you put diesel in an unleaded car: what to do
Rarer, less destructive, still needs draining.
The pump that pays for the mistake
A modern diesel high-pressure pump is machined to extremely fine tolerances and relies on the diesel itself to stay lubricated. Petrol is a solvent, so it removes that protection. The pump keeps turning, wears, and sends particles toward the injectors. Every part of that chain begins with the ignition.
Step by step
- Ignition off and stay off No starting, no accessory position, no quick test. Contamination still sitting in the tank is the best case, and it lasts exactly until the engine turns over.
- Keep the vehicle still Even rolling it a few metres can move fuel toward the pickup. If the spot is safe, the spot is right.
- Look after people first Hazard lights on. Passengers out and clear if there is passing traffic. On a forecourt, let the staff know what has happened.
- Phone 01293 248666 Give the vehicle, the fuel that went in, an estimate of the amount, and whether it ran. The price comes back on the same call.
- Extraction on the spot The tank is drained, the lines flushed, clean fuel added and the system primed — anywhere across TS1 and TS3 to TS8.
- Paperwork and the waste An invoice for you; the contaminated fuel leaves with us as controlled waste under a transfer note.
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What people actually said
4.8 out of 5 from 2,190 Trustpilot reviews. Two themes dominate the positive ones — how fast someone arrived, and how calm they were about it.
The recurring negative is price. Publishing that alongside the answer seems more useful than hiding it: £89 to £199 for the call-out, £199 to £1,999 for the drain, the total quoted before a technician moves, and no charge for being told on the phone that this is a job for a workshop.
Questions we get asked
How much does it cost in Middlesbrough?
Call-out £89 to £199, drain £199 to £1,999. The full price for your vehicle is confirmed on the phone before a technician sets off, so there is no surprise when we arrive.
What happens to the old fuel?
It leaves with us as controlled waste under a waste transfer note. It is not tipped, and it is not resold to you.
Do you cover all of TS1 and TS3 to TS8?
Yes, from one rota — so being at one edge of the area rather than the other changes the arrival window, not the price.
How long will I be waiting?
Arrival depends where you are across TS1 and TS3 to TS8 and what is already running. You get a realistic window on the call rather than an optimistic one.
Who you are dealing with
Wrong Fuel Middlesbrough 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 Middlesbrough 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.
- Forecourt Assistance — the operator: network directory and author page
- AdBlue in Fuel — AdBlue contamination drains only
- Misfuel Doctor — misfuel help, organised by fuel mix-up
- Wrong Fuel — the evidence base; home of every statistic
- Fuel Fixer Scotland — wrong fuel across Scotland, plus Ireland
- Fuel Fixer — the group operating site
- Misfuel Servicing — wrong fuel and misfuelling help, call-only
Background reading: Environment Agency.
Last updated · Reviewed by Rambo S, Wrong Fuel Expert