Pump prices have surged 27% in five weeks. But while most drivers grit their teeth and pay, 127,000 UK drivers have quietly slashed their fuel bills by up to £250 a month — using a small plug-in device built by a former car manufacturer engineer.

Julian Newman spent 27 years as an engine management engineer, writing the software code that controls how much fuel your car burns. He programmed the onboard computers — known as ECUs — for some of the world's biggest car manufacturers.

Then he went public with something most drivers have never been told.

'Every car that rolls off a production line uses a universal fuel setting that may waste fuel,' Newman told MotorReport in an exclusive interview. 'Every single one. Petrol. Diesel. Doesn't matter. They're all running on software designed for the worst conditions on earth — not UK roads.'

His claim sounds extraordinary. But when we asked him to prove it, he did — with data that left our motoring desk speechless.

Newman arranged a 7-day independent road test across three popular UK vehicles: a Toyota HiLux, a Mazda 3, and a Toyota Corolla. Each car was fitted with his device — called Syngas — and driven on its normal daily route by its normal driver. No changes to driving style. No special conditions.

The results:

Toyota HiLux: 10.2 → 6.6 L/100km. Mazda 3: 7.1 → 4.6 L/100km. Toyota Corolla: 6.5 → 4.2 L/100km.

Independent 7-day road test results: fuel consumption before and after fitting Syngas across three popular UK vehicles.

Same cars. Same drivers. Same roads. The only variable was a device the size of a thumb drive, plugged into a port most drivers don't even know exists.

Since the test results were published, Syngas has sold out seven times. Over 127,000 UK drivers have now ordered one.

Why Your Car Is Burning Your Money

If you've ever wondered why your fuel bill keeps climbing even though you drive carefully, the answer isn't your driving. It's your car's software.

Newman spent nearly three decades writing that software. And he knows something most drivers don't:

Every car built since 1996 is running on a 'lowest common denominator' fuel setting.

Here's why. The same Toyota HiLux sold in London is also sold in Bangkok. The same Mazda driven on the M25 is also driven across the Sahara. Manufacturers need one universal software setting that works everywhere — on the cheapest, lowest-grade fuel in the world, in extreme heat, at high altitude, in freezing cold.

The result? Your engine injects far more fuel than it needs. It ignites it at the wrong time. It leaves energy on the table with every single combustion cycle.

In the UK — where fuel quality is among the highest in the world — this means your car is wasting between 35% and 55% of the fuel you pay for. Every fill-up. Every drive. Every year you own the car.

'It's like wearing a winter coat in July,' Newman explains. 'Your engine is dressed for the worst conditions on earth. Syngas simply takes the coat off.'

Why Nothing Else You've Tried Will Work

You've probably heard of solutions before. None of them fix the actual problem.

Eco driving mode? Built into most modern cars — but it just softens the throttle response and limits the air conditioning. Typical saving: 3-5%. Barely noticeable.

Fuel additives? Promise miracles in a bottle. Independent testing consistently shows they deliver between 0% and 2% improvement. Some actually increase emissions.

ECU tuning? Can improve efficiency — but it permanently overwrites your car's factory software. It voids your warranty. It can fail your MOT. And most garages charge £390 to £800 for the job.

Going electric? That's £40,000 to £65,000 for a new vehicle. For most families, that's not a realistic option — especially when the car they already own could be running at twice its current efficiency.

Syngas is different because it doesn't change your car permanently. It doesn't void your warranty. It doesn't require a mechanic. It addresses the one thing none of these solutions touch: the real-time software settings that control how much fuel your engine burns.

Julian Newman demonstrates how the Syngas chip plugs into a standard OBD2 diagnostic port in under 30 seconds.

How Syngas Works

Every car built since 1996 has an OBD2 diagnostic port — usually found in the footwell beneath the steering wheel. It's where mechanics plug in their diagnostic tools during a service.

Syngas plugs into this port. No tools. No wiring. No mechanic. You push it in, turn the ignition, and it begins working immediately.

Here's what happens inside your engine:

The Syngas chip reads your engine's live data — RPM, throttle position, air intake temperature, fuel pressure — and continuously recalculates the optimal fuel injection timing and air-fuel ratio for your specific driving conditions.

Instead of your ECU injecting fuel based on worst-case-scenario factory settings, Syngas adjusts the mapping in real-time to match UK fuel quality, your local climate, your driving style, and the actual load on your engine at any given moment.

The result is cleaner, more complete combustion. Less fuel wasted. More energy extracted from every drop. And because the combustion is more efficient, the engine actually runs smoother — with better throttle response and fewer carbon deposits building up over time.

'Your car already has the hardware to be far more efficient,' Newman says. 'The software just won't let it. Syngas overrides that limitation — safely, legally, and reversibly. Unplug it and your car goes straight back to factory settings. No trace. No damage. No risk.'

The 3-Step Installation

1. Plug it in

Locate your OBD2 port (usually under the steering wheel in the footwell). Slide the Syngas device into the slot until it clicks. No tools required.

2. Start the engine

Turn the ignition on for 30 seconds. Syngas begins reading your engine data and calibrating the optimised fuel map for your specific vehicle.

3. Drive and save

Start your engine and drive normally. Syngas optimises combustion in real-time from the first mile. After approximately 125 miles, the chip fully maps your individual driving patterns for maximum savings.

The entire process takes less time than filling a kettle. It works on every petrol and diesel car built since 1996 — Toyota, Mazda, Ford, Hyundai, Kia, Mitsubishi, Nissan, Subaru, Vauxhall, BMW, and more.

And because Syngas never exceeds your engine's factory tolerances, it doesn't affect your warranty, your MOT, or your insurance. It simply unlocks the efficiency your engine was always capable of — but the factory software wouldn't allow.

'I drive a 2020 Toyota RAV4. My commute is 50 miles each way. Before Syngas, I was getting about 42 MPG and spending roughly £450 a month on diesel. After two weeks with the device, I'm consistently hitting 61 MPG. That's saving me over £200 a month. The missus thinks I've bought a different car.' — Mark T., 44, Manchester

'I was sceptical — really sceptical. I'm a qualified mechanic. I understand how ECUs work. But my mate installed one and his fuel bill dropped by a third, so I tried it on my Ford Ranger. Went from 7.4L/100km down to 5.2L/100km. I've now fitted one in every car I service for my regular customers. They all come back thanking me.' — Darren S., 36, Birmingham

'I'm retired on a fixed income. Petrol hitting £1.70 a litre was genuinely frightening — I was starting to cancel trips to see my grandchildren because I couldn't afford the fuel. My son ordered me a Syngas for Christmas. My RAV4 went from 8.2L/100km down to 5.4L/100km. I've saved enough in three months to take the grandkids on holiday.' — Brian H., 68, Leeds

Based on data from over 127,000 UK drivers, here's the typical experience with Syngas:

Days 1–3: The device begins reading your engine's behaviour and calibrating the optimal fuel map. Most drivers notice smoother throttle response and quieter engine operation within the first few drives.

Week 1–2: Fuel consumption begins dropping noticeably. Most drivers report a 15–25% reduction in the first fortnight as the chip learns your driving patterns.

Week 3–4: Full optimisation kicks in. The device has now mapped your engine, your fuel type, your climate, and your driving style. Savings of 35–55% are typical. Many drivers report their fuel gauge barely moving on journeys that used to drain half a tank.

Month 2+: The savings compound. At current fuel prices, most drivers are saving between £110 and £250 per month — paying for the device many times over.

For a limited time, Julian Newman is offering MotorReport readers a 70% discount with FREE delivery on the Syngas Fuel Optimiser to mark the product's nationwide launch.

Once you place your order, the device arrives at your door — ready to install in 30 seconds.

If Syngas doesn't reduce your fuel consumption by at least 15%, you get a full refund within 30 days. You keep the device. No questions asked.

This offer won't last — follow the link below to claim your 70% discount + FREE delivery.