Audi, VW Patent Synthetic Fuel Blending System
The patent describes equipment that identifies, tests, and blends synthetic fuels to meet gasoline and diesel specifications.
Updated on Nov. 8, 2026 in Electric Vehicles
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Audi and Volkswagen have filed a patent for a system that blends synthetic fuels, which are gasoline substitutes made without crude oil. The filing comes as Porsche, Ferrari, and Lamborghini have lobbied for synthetic fuels to be allowed in the EU instead of electric vehicles.
Why it matters
Synthetic fuels may not always meet the octane requirements of regular or premium gasoline, so a blending system could help bring them closer to standard specifications. Patent filings, however, do not guarantee that such technology will appear in future vehicles.
The patent describes a system that tests blends for boiling profile, octane, and yield-soot index, with a 50-50 blend cited as one possible ratio. Making synthetic fuels to replace gasoline remains resource-intensive and is mostly limited to test-scale volumes.
The players
Audi
Audi is a German luxury automaker and a subsidiary of the Volkswagen Group.
Volkswagen
Volkswagen is a German automaker and the parent company of Audi, headquartered in Wolfsburg.
Porsche
Porsche is a German sports car manufacturer known for its performance vehicles, and it has lobbied to keep synthetic fuels available in the EU.
The details
The patent describes a machine that identifies fuels in two separate tanks or hoses, a computer that calculates how to blend them to meet specifications, and a third component that adds additives such as alcohol or paraffin. The system is described as working with diesel, biodiesel, and synthetic aviation fuels, and synthetic fuels can be produced from biofuel sources, natural gas, or CO2 and hydrogen using green-generated electricity.
Timeline
Filing reported by CarBuzz on November 8, 2026.
Roadmap
The lobbying by Porsche, Ferrari, and Lamborghini represents an attempt to carve out space for synthetic fuels within the EU's electric-vehicle policy direction. The Audi and Volkswagen patent shows automakers exploring how to make such fuels compatible with existing engines.
For drivers, synthetic fuels would only matter if they reach gas stations at octane levels that existing engines can use without modification. The patent's blending approach is one proposed route toward that compatibility, but it is not yet a product available to buyers.
The takeaway
Synthetic fuels are being pursued as a possible complement to electric vehicles, but blending and cost hurdles remain before they could be widely used. Readers should watch for production decisions rather than patent filings alone.
Further reading
For the broader debate over battery power versus alternative fuels, see Electric Vehicles.
Source note: This article includes information reported by CarBuzz.
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