Genius Fuel-Saving Invention from Tarn Lets Drivers Go 100–160 km Further on a Tank

A French inventor from the Tarn region has developed a fuel-saving device that allows vehicles to travel an additional 100 to 160 kilometers on a full tank of fuel, according to a report published by ladepeche.fr on April 26, 2026. The invention, described as a simple mechanical system that optimizes fuel combustion, has attracted attention for its potential to reduce fuel consumption amid rising energy costs.

The device, created by a local inventor identified only as a resident of the Tarn department in southern France, works by modifying the air-fuel mixture in internal combustion engines to improve efficiency without requiring major engine modifications. According to the article, users report being able to drive between 100 and 160 kilometers further per tank after installation, a claim that has drawn interest from drivers seeking to mitigate the impact of fluctuating fuel prices.

While the article does not specify the technical name of the device or provide independent test results, it emphasizes that the invention is designed for aftermarket installation and is intended to be accessible to average vehicle owners. The report notes that the inventor has focused on creating a solution that does not rely on electronic components or complex software, positioning it as a low-cost, mechanically based alternative to electronic fuel optimizers.