Wrong fuel in any vehicle fixed, from £99, fastest response | GMM Service & Repairs Limited Wrong Fuel Assist

Our Major Services

Fuel assist

24/7 wrong fuel assistance available by our vans.

Breakdown & Recovery

We also offer mobile mechanics and breakdown recovery services.

Diagnostics

Engine diagnostics service by the most modern equipment.

Mobile EV Charging Service

Best Road Side EV Charging Service Around the Clock at Affordable Prices.

Mobile Auto Locksmith Services

Roadside auto locksmith services, fully equipped vans with trained locksmiths

DPF Cleaning

DPF Cleaning service by trained technicians using modern equipment.

Wrong Fuel Drain & DPF Cleaning in London 24/7 Local Service

When you and your vehicle are stuck on the roadside, you need a specialist who can fix the situation there and then, not a recovery truck with two hours wait to reach a workshop. GMM Service & Repairs Limited delivers fast, professional wrong fuel assistance, mobile DPF cleaning and auto locksmith service, helping drivers get back on the road within a few hours. Our fully equipped and highly trained technicians handle everything from petrol in diesel to diesel in petrol or blocked DPF to lost or broken car keys. Our prices are clear, with no hidden charges, and we offer a rapid response, along with a 'no start, no fee' promise where applicable. We can get you going with our roadside assistance as our fully equipped vans have the right tools to fix your vehicle on the spot. Here is a detailed view of what we can do for you and your vehicle.

Our Core Services:

Wrong Fuel Assist – Fast, Safe, On-Site

We understand the gravity of the situation when you put the wrong fuel in your vehicle. No matter if it is petrol in a diesel or diesel in a petrol vehicle, or an AdBlue mistake, our trained technicians come directly to you and carry out a complete fuel drain and system flush. We work on cars, vans, trucks and motorcycles, advising you to switch the engine off and leave the rest to us. With clear pricing and a no-start, no-fee guarantee where no damage is found, GMM1 provides trusted wrong fuel assistance you can rely on.

Mobile DPF Cleaning – Restore Power & Economy

Diesel vehicles can suffer from a blocked DPF that can affect the performance and fuel efficiency of the vehicle, rendering it in limp mode. We provide same day, on site DPF cleaning, starting with a full diagnostic pre-check before carrying out advanced cleaning to safely remove soot and carbon build up. By restoring proper airflow through the exhaust system, we help improve engine performance, fuel economy and emissions compliance, allowing you to avoid costly DPF replacements and get back on the road quickly.

Auto Locksmith Services – Get Back On the Road

If you have lost the keys to your vehicle and are locked out, we offer fast, reliable mobile locksmith support wherever your vehicle is stranded. Whether you’ve lost your keys, need car key replacement and programming, or require a quick key fob battery replacement, our technicians come fully equipped to help on the spot. We also offer spare key cutting, motorcycle key services, lock repairs, and re-programming after stolen keys, ensuring secure, professional car key services that get you back on the road without delays.

Fast and Reliable Roadside Assistance for Minor Faults

Our Roadside Assistance service focuses on getting you moving again on the spot, without the need for a recovery truck. If your vehicle won’t start or develops a minor fault, our mobile technicians attend with diagnostic tools and equipment to identify and resolve common roadside issues quickly. Wherever possible, we carry out a safe, immediate fix at your location, helping you avoid unnecessary recovery, delays, and added costs.

EV Charging Assist

Every electric vehicle driver knows the dreaded feeling when their vehicle runs out of charge and is not able to reach the nearest charging point. We provide on-site emergency charging to give your EV enough power to continue your journey or reach a suitable charging station safely. Fast, convenient and stress-free, our mobile support helps you avoid recovery where possible and keeps you moving when unexpected range issues occur.

Why Choose GMM Service & Repairs Limited?

We invested in modern tech and state of the art equipment to extract the wrong fuel not only from the tank but fuel lines as well. A major investment we made was for the fully equipped van fleet so we can reach you quickly wherever you are stranded. Our professional DPF technicians operate the latest cleaning equipment to provide effective same-day mobile DPF cleaning, while our certified auto locksmiths offer fast key replacement and programming at your location. With rapid response times, clear communication and transparent pricing from £99 on core services, we focus on fixing problems quickly, safely and without unnecessary recovery.

You can Call GMM Service & Repairs Limited today for fast, reliable wrong fuel assistance, mobile DPF cleaning or auto locksmith services and get back on the road with confidence.

Renault Megane – On-Site DPF Cleaning to Restore Performance

A Renault Megane (LV66 KTK) was attended at SG13 8LU, 1 Little Berkhamsted Lane, after symptoms pointed towards a heavily restricted DPF. Initial diagnostics showed a high pressure reading of 57.3 mbar, indicating poor exhaust flow. Our on-site DPF cleaning service was carried out, reducing the pressure to 22.8 mbar and restoring proper system efficiency at 93,248 miles.

Service: DPF Cleaning

Make: RENAULT

Model: Megane

Area: London

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Wrong Fuel Drained – BMW G 310 R Motorcycle Back on the Road

This BMW G 310 R motorcycle was misfuelled, leaving the rider unable to continue the journey and risking serious damage to the bike’s engine and fuel system. Our mobile wrong fuel specialist arrived in Manchester during the evening, performed a full drain using motorcycle-safe extraction equipment, and flushed the system thoroughly. The bike was refilled with the correct fuel and restarted smoothly, restoring performance without any lingering issues.

Service: Wrong Fuel

Make: BMW

Model: G 310 R

Area: London

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Wrong Fuel Drained – Ferrari Pista Spider Back to Peak Performance

This Ferrari Pista Spider was misfuelled, putting a highly sensitive and high-value supercar at immediate risk of damage. Our wrong fuel specialist arrived promptly in London during the morning and carried out a full fuel drain using precision-grade equipment designed for performance vehicles. The system was safely flushed and refilled, restoring the Ferrari to flawless running condition without any warning lights or engine issues.

Service: Wrong Fuel

Make: Ferrari

Model: Pista Spider

Area: London

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Wrong Fuel Drained – Porsche 911 GT Restored Safely

This Porsche 911 GT was misfuelled, putting this high-performance sports supercar at immediate risk of internal damage. Our wrong fuel specialist arrived in South Goldstone at midday, carried out a full fuel drain with precision equipment, and flushed the system to manufacturer-safe standards. The Porsche was restarted without any warnings or performance issues, saving the owner from extremely costly repairs.

Service: Wrong Fuel

Make: PORSCHE

Model: 911 GT

Area: London

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Wrong Fuel Drained – Ford Transit Truck Back in Service

This Ford Transit truck was misfuelled, leaving the driver unable to continue the journey and at risk of major engine damage. Our wrong fuel engineer arrived in St Albans during the evening and carried out a full fuel drain using specialist equipment designed for larger commercial vehicles. The truck was safely restarted, allowing the driver to get back on the road without any delays or costly workshop repairs.

Service: Wrong Fuel

Make: FORD

Model: Transit

Area: London

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Wrong Fuel Drained – Vauxhall Vivaro Back on the Road

This Vauxhall Vivaro was misfuelled, leaving the driver unable to continue work and at risk of engine damage. Our wrong fuel specialist arrived in Romford the same evening, carried out a complete fuel drain using advanced equipment, and safely flushed the system. The van was restarted without any issues, allowing the driver to get back on schedule without costly repairs or downtime.

Service: Wrong Fuel

Make: VAUXHALL

Model: Vivaro

Area: London

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Wrong Fuel Drained – Misfuelled Mercedes AMG GT Black Series

The owner of this Mercedes AMG GT Black Series accidentally filled the wrong fuel, risking serious engine damage on this high-performance sports car. Our wrong fuel engineer reached Gatwick promptly, carried out a full fuel drain using advanced equipment, and ensured the system was completely flushed. The vehicle was safely restarted without any warning lights or performance issues—saving the owner from costly repairs.

Service: Wrong Fuel

Make: MERCEDES-AMG

Model: GT Black Series

Area: London

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Wrong Fuel Drained – Petrol in Diesel / Diesel in Petrol Fixed

The owner of this G Wagon had accidentally filled the wrong fuel, petrol, in a diesel vehicle, leaving the car unable to run properly. Our nationwide wrong fuel engineer arrived on-site, safely drained the contaminated fuel, flushed the system, and got the vehicle running smoothly again. The customer was back on the road within a short time, avoiding costly repair work and dealership delays.

Service: Wrong Fuel

Make: MERCEDES-BENZ

Model: G-Class

Area: London

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Wrong Fuel Drained – Ferrari Pista Safely Recovered On-Site

This Ferrari Pista Spider was affected by a misfuelling incident, placing the vehicle’s advanced engine and fuel system at serious risk. Our specialist wrong fuel engineer attended the scene promptly, carrying out a careful fuel extraction using supercar-approved equipment. The fuel system was professionally flushed and refilled, ensuring the Ferrari was returned to running condition without faults or warning messages.

Service: Wrong Fuel

Make: Ferrari

Model: Pista Spider

Area: London

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Mercedes GLA On Site DPF Cleaning for Performance Restoration

A 2015 Mercedes GLA dropped in limp mode after its DPF became severely blocked, showing a high differential pressure of 58.5 mbar. Our technician carried out a full on-site DPF clean using specialist equipment, bringing the pressure down to 9.4 mbar. With the soot load safely removed and the system flowing freely, the vehicle’s performance was fully restored and the DPF warning light disappeared immediately.

Service: DPF Cleaning

Make: MERCEDES-BENZ

Model: GLA-Class

Area: London

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Range Rover Evoque Blocked DPF Cleaned

The owner of this Range Rover Evoque had a blocked DPF with a dashboard warning advising dealership cleaning or replacement. Our on-site diagnostic showed a high differential pressure of 18 kPa. We carried out a professional DPF clean, reducing the pressure to 3.18 kPa and clearing all warnings. The Evoque regained full performance without needing an expensive new filter.