Real-World Verified Results
Independent tests across multiple countries and vehicle types confirm FuelMarble delivers consistent fuel efficiency improvements, with an average 20% improvement across all documented tests.
Driving distance increased proportionally with no engine modifications or recurring costs.
Based on real-world fuel prices and driving patterns, users save significantly on annual fuel spend.
Independent tests conducted in Japan, Indonesia, and China across multiple vehicle types and conditions.
FuelMarble is the only product cleared by the Japan Fair Trade Commission (JFTC) following a 2008 investigation into fuel-saving claims. While 19 competitors received cease-and-desist orders for lacking evidence, FuelMarble's valid performance data allowed it to remain on the market.
Independent 2-month road test on a 2012 Honda Freed 1500cc in Jakarta traffic. Using a consistent fill-to-fill methodology with the same driver and routes, FuelMarble delivered a sustained 21.75% improvement in fuel efficiency compared to the pre-installation baseline.


Fleet test across multiple Honda vehicles at a Qinhuangdao facility, independently conducted by Shiao Moto Vehicle Testing Company Ltd. and certified by the Qinhuangdao City Ecological Environment Bureau. Results confirmed consistent fuel efficiency improvements across all tested models.

What are the fuel efficiency results for specific vehicle models?
Real-world performance data across tested vehicles. Results vary by engine size, age, and driving conditions.
Mercedes Benz C Class
3500cc
Honda Accord
2500cc
Honda Accord
2500cc
Daihatsu Mouvement
660cc
How Tests Were Conducted
A minimum 30-day baseline was established before FuelMarble installation, recording fuel consumption under normal driving conditions using the fill-to-fill method.
The same vehicle, driver, and routes were used throughout the test. No other changes were made to the vehicle, fuel type, or driving habits during the monitoring period.
Fuel consumption was calculated by recording the volume needed to refill the tank to the same level at each fill-up, expressed as km per litre.
Results were recorded for a minimum of 60 days after installation to account for the 150–200 km activation period and to confirm sustained improvement.
Who Verified the Data?
Academic research partners behind the core hydrophilic thermal technology, validated over 10+ years.
Co-developer of the engineering foundation for thermal optimisation performance.
Independent vehicle testing body that conducted the China fuel efficiency trials.
Government environmental body that certified the emissions results from China testing.
Professional engineering body that validated the technical methodology.
Cleared all efficiency claims as substantiated under Japan's advertising standards, following an investigation in which 19 competitors received cease-and-desist orders.
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