Flying with NEOFUEL™ means:
Flying without lead in your fuel
Reducing your carbon emissions and your costs,
Eliminating once and for all the constraints associated with AVGAS
Vision
NEOFUEL© revolutionizes aviation by crafting and certifying kits that allow your aircraft to run on readily available lead-free fuels. Embrace a future of sustainable flight and contribute to a healthier planet, all without needing to replace your trusted traditional engines when AVGAS ceases to be distributed.
NO LEAD NOR CARBON.
The phase‑out of leaded AVGAS is scheduled for May 2032 in Europe and January 2030 in the USA.
This does not mean the end of your engine—quite the opposite. It represents a unique opportunity to continue flying with your conventional engine while simultaneously reducing lead and carbon emissions, benefiting from a reduced fuel flow (up to 20 to 25%).
NEOFUEL™ develops and certifies retrofit kits that enable the use of all available unleaded fuels, supporting sustainable aviation and a healthier planet—while preserving the traditional engines installed in your aircraft.
Our solutions complement electric and hydrogen technologies, which will not be available for all aircraft within the required timeframe.
Kits for Lycoming™, Continental™, and Rotax™ engines are currently under development, with certification processes set to begin shortly.
Our innovative solutions seamlessly integrate with legacy engines, ensuring no part of the existing fleet is left behind. Today, we are in the process of developing and certifying kits for Lycoming™, Continental™ or Rotax™ engines.
LEAD & CARBON
Today, the vast majority of light aircraft powered by piston engines still rely on leaded gasoline (AVGAS)—the last leaded fuel still produced and distributed worldwide.
In both the United States and Europe, the harmful effects of tetraethyl lead (TEL) contained in AVGAS have raised serious concerns, prompting regulatory action to ensure its complete elimination.
- In the United States, the pilot community has voluntarily agreed to cease the use of leaded AVGAS from 2030, resulting in its disappearance as of that date.
- In Europe, the importation of TEL has been formally banned since 2025. Temporary exemptions have been granted, allowing the use of AVGAS until May 2032.
New fuels are emerging—such as UL‑91, UL‑94, GAMI™, and others—but significant uncertainties remain regarding their compatibility with the existing fleet and their certification status.
Most importantly, none of these solutions addresses the issue of carbon emissions, which represents the next major challenge for the general aviation community.
As the industry adapts, pilots may face a challenging transition, with various platforms building their own support networks.
NEOFUEL is taking the lead by developing and certifying MULTIFUEL KITS to give pilots more power and flexibility:
CHOOSE THE FUEL AVAILABLE AT THE AIRFIELD, CHOOSE PEACE OF MIND.
MultiFUEL Technology :One solution. Two challenges addressed.
This is the only viable solution during (and after) the transition period: it prevents you from becoming captive to the networks of these new fuels.
NEOFUEL™ introduces multi‑fuel technology to aircraft engines.
This technology allows you to select your fuel from a wide range, including:
- AVGAS 100LL,
- unleaded aviation fuels (UL‑91™, UL‑94™, GAMI™, etc.),
- automotive fuels (SP98, SP95, E10…),
- and ethanol‑based fuels that are lead‑free and low‑carbon, such as E85.
All existing engines—Lycoming™, Continental™, and Rotax™—will be eligible for a certified retrofit kit (AML/STC approved by EASA, FAA, or national authorities).
At a time when negotiations surrounding AVGAS replacement fuel certification offer no clear, scalable solution, introducing fuel flexibility has become essential.
NEOFUEL™ kits therefore integrate electronic fuel injection and ignition modules, derived from the most advanced automotive technologies and adapted to meet the stringent requirements of aviation.
NEOFUEL™ certified kits facilitate the transition by enabling the use of all aviation and automotive fuels available on European airfields, including E85, which is 85% ethanol and 15% unleaded gasoline.
This capability is made possible through:
- advanced ignition management with variable timing(replacing magnetos),
- a modern fuel injection system that continuously analyzes the fuel in the tanks and automatically adjusts engine parameters in real time.
As a result, detonation and knocking are eliminated, hourly fuel consumption is reduced by 20–25%, and pilot workload is significantly lowered through automatic mixture management
REVOLUTIONIZE YOUR AIRCRAFT WITH NEOFUEL’S CUTTING-EDGE MULTIFUEL KITS
Transform your aircraft’s performance with Neofuel’s revolutionary Multifuel Kits, designed for every engine in service—whether it’s a Lycoming™, a Continental™ or a Rotax™. Each MULTIFUEL KIT will be covered by an AML STC (FAA, EASA, or your national authority).
Unleash the future of flight with cutting-edge EFII (Electronic Fuel Injection and Ignition) systems, blending the best of car technology with aviation precision and safety standards. This will bring you a flying experience like no other and benefits such as:
- Tank and fuel delivery system compatibility with all fuel types, Including Ethanol based fuels
- Elimination of water or condensed humidity before delivery to the engine
- Full replacement of legacy carburettors and old style injection systems
- Full Electronic EFII ( Electronic Fuel Injection and Ignition) with redundancy and including a network of sensors (ethanol, oxygen, temperature, pressure, etc.)
- Resolution of valve problems on older engines.
- Increased safety, thanks to redundancy
- Reduced fuel flow at all cruise settings
- Ability to use any automotive fuel without fear of knocking or detonation
- Ability to mix fuel types without limitations
- Total elimination of lead emissions
- Drastic reduction of carbon based emissions
Leadership
Gilles Rosenberger
Sustainable Aviation Expert.
CEO of NEOFUEL
Engineer & Pilot.
Emmanuel Davidson
Co-founder, VP Marketing/Communications
Industry expert, aviation journalist,
aircraft owner & pilot
Gilles Brechet
Co-founder, VP Finance & Administration
Pierre Jouniaux
Co-founder, VP Business & Corporate Dev.
SUPPORTS & PARTNERS
UNITED for CLEAN FLYING !
Our partners embrace our vision for a cleaner future of general aviation.
These Pilots, Engineers, Mechanics, and Industry Experts Support Our Initiative.
They Understand NeoFuel’s Role in Safeguarding General Aviation’s Future Amidst the programmed Avgas International Ban.
Jean Luc CHARRON
Considering the size of the FFA's club fleet, we are apprehensive about the potential phase-out of 100LL. Thus, we support any solution that could provide an alternative suitable for our club's aircraft, acknowledging the challenges such a development entails; consequently, we are closely monitoring NEOFUEL's progress.
Jean BOTTI
I support NEOFUEL's FLEXFUEL offer: today it's the only one capable of allowing owners and operators to continue to use legacy engines while using greener and lead free fuels.
Pierre DUVAL
I am profoundly concerned about the disappearance of 100LL. I believe Super Ethanol (E85) fuel represents a significant and viable path towards decarbonizing aviation. I fully support NEOFUEL in advancing swiftly to present a MULTIFUEL solution tailored to our general aviation needs.
Jean-Claude SEVIGNE
I've known Gilles for over 50 years. We've worked together.
He has become an expert in new aviation and decarbonization, and I think his vision is relevant.
Nicolas JEULAND
It will be difficult to take 2 consecutive turns: getting rid of lead and then carbon, so we need to favour all solutions that deal with the 2 problems at the same time. A range of MULTIFUEL capable engines will free us from the constraints of tAVGAS. I'm aware of the difficulties of such a development, but I like NEOFUEL and its ambition.
CAREERS
Join us in revolutionizing aviation! We’re seeking visionary thinkers and innovators eager to shape the future of flight.
We’re seeking trailblazers who grasp the complexities of general aviation, share our fervor for slashing our carbon footprint in the skies, and boast impeccable expertise in state-of-the-art computerized ignition and fuel injection systems.
Open positions:
- No open positions currently
Interested in joining a young, innovative company?
You can send us an unsolicited application.
