Reduce Delivery Vehicle Fuel Costs by up to 20.8% Without Changing Your Vehicles

Fuel is the single largest controllable cost for any delivery company.

Whether you run a two-van courier operation or a fleet of 50 diesel vehicles making last-mile drops across the city, fuel typically accounts for 25–35% of total operating costs — and stop-and-go urban driving pushes that figure even higher.

FuelMarble is a scientifically verified fuel efficiency device that reduces delivery vehicle fuel consumption by up to 20.8%, confirmed through independent testing across three countries. There are no driver behaviour changes required, no route modifications, and no vehicle downtime. One device, dropped into the coolant reservoir, starts improving combustion efficiency from day one.

Independent tests across Japan, China, and Indonesia recorded fuel efficiency improvements ranging from 17% to 21.75%, with individual vehicle trials reaching up to 28.2% on specific models.

The Japan result of 20.8% — verified by Kurume University and cleared by the Japan Fair Trade Commission (JFTC) — is the conservative benchmark used for fleet planning.

View the full independent test data at our Verified Results page.

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Why Fuel Costs Are Breaking Delivery Companies Right Now?

The margins are unforgiving. Pre-tax profit for UK road freight operators has slid to just 1.58% in recent years, down from 2.60% the year before, with operating costs rising faster than inflation.

Fuel sits at the centre of that pressure — and unlike labour or insurance, it moves unpredictably, often within days. As of December 2025, diesel averaged 144.27p per litre across UK forecourts, according to RAC Fuel Watch.

The Competition and Markets Authority (CMA) confirmed that fuel margins at UK forecourts remain at "persistently high levels", with non-supermarket retailers operating at 11.1 pence per litre margin — costs passed directly to fleet operators with every fill.

For a delivery company running 20 vans covering 80 miles each per day:

• Daily diesel spend: approximately £460

• Annual diesel spend: approximately £115,000

• A 17% FuelMarble saving: approximately £19,550 per year

• A 20.8% FuelMarble saving: approximately £23,920 per year Delivery companies cannot control the pump price.

They can control how efficiently their engines burn the fuel they buy.

Independently Verified Across Three Countries

FuelMarble has been tested independently in Japan, China, and Indonesia — not just in laboratory conditions, but in real-world urban driving environments. Results are consistent across all three markets.

Read the Jakarta Case Study →

Full audit data · independent methodology · 2023

How FuelMarble Reduces Fuel Consumption in Delivery Vehicles?

FuelMarble works at the engine level, not the driver level. Here's exactly how it reduces fuel consumption in delivery vehicles — and why it works particularly well in urban last-mile operations.

FuelMarble and Clean Air Zones: A Cost Saving and Compliance Tool

Fuel efficiency is only part of the story. Verified testing in Japan confirmed that FuelMarble reduces Carbon Monoxide (CO) emissions by up to 100% and Hydrocarbons (HC) by up to 95% in controlled trials, and reduces CO₂ emissions by over 10% in congested urban environments.

For delivery companies operating in or near UK Clean Air Zones (CAZ) and London's Ultra Low Emission Zone (ULEZ), this matters beyond the balance sheet. Daily charge rates for non-compliant diesel vans in ULEZ currently stand at £12.50 per day — adding over £3,000 per vehicle per year for fleets making regular London deliveries.

FuelMarble does not convert a non-compliant vehicle to compliant status for CAZ purposes. However, the verified reduction in harmful emissions makes it a meaningful step toward cleaner fleet operation — reducing both environmental impact and the long-term pressure on operators to replace older vehicles before their economic life ends.

Estimated Annual Savings for Delivery Fleets

The figures below show what FuelMarble could save your fleet annually, based on UK diesel at 144p per litre (RAC Fuel Watch, December 2025), 35 mpg average for light commercial vans, and 250 operating days per year. Savings are shown at both ends of the independently verified range — 17% and 20.8% — so you can plan conservatively or optimistically.

Reduce fuel costs on your daily routes. Become a FuelMarble tester and enjoy real savings — plus a free device to keep.

FuelMarble Tester Program Details

Delivery Vehicle Compatibility

FuelMarble comes in two sizes to cover every vehicle in your delivery operation, from city vans to heavy commercial trucks. Select the right size below and click through to the product page for full specifications.

You will notice the benefits, including savings on fuel costs and a reduction in exhaust emissions, after driving for 150 to 200 km.

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