500 km of range and a recharge in ten minutes. A start-up from Normandy is aiming to revolutionise electric mobility with a ground-breaking prototype.

A response to the energy consumption of cars
In France, cars account for 30% of national energy consumption. Marc Guillemaud and Aurélien Roulleaux Dugage, two engineers from Normandy, want to change this equation. They founded FacteurDix in 2024 in Saint-Romain-de-Colbosc, near Le Havre. Their aim: to reduce the energy consumption of an electric vehicle by a factor of ten. The result: LINE, an aerodynamic, lightweight and ultra-efficient three-wheeler.
A sober design
LINE weighs less than 500 kg, thanks to composite materials from the boating and aeronautical industries. Its teardrop profile reduces air resistance and optimises efficiency. With a reduced frontal area, it achieves a drag coefficient of 0.28 m². By comparison, the best Tesla is 0.51 m². This design delivers record fuel consumption of 4 kWh/100 km.
Performance worthy of a classic road car
LINE reaches speeds of 165 km/h and offers a WLTP range of over 500 km. It recharges from 20% to 80% in ten minutes using a 100 kW charging point. This performance means it can be driven on the motorway at 130 km/h for two to three hours.
Despite its small size, the car is still very safe, with airbags, ESP and ABS. The engine is compact and light, with torque close to that of a Lotus Elise.
An ambitious industrial project
The prototype is being built by Faster in Plaisir (Yvelines), a specialist in experimental vehicles. FacteurDix expects the vehicle to be approved in 2027, before going into production. Ten examples will initially be offered to investors and ambassadors. Between 2028 and 2029, the aim is to produce 500 vehicles a year. From 2030, production could reach 10,000 units a year.
An assertive positioning
The target price has been set at around €30,000. The start-up is targeting a public that is aware of climate issues and looking for something original. LINE could also be attractive as a second car or for professional fleets. FacteurDix aims to become a Mission Company by 2026. The company is committed to reparability, sustainability and local job creation.