The magic foil


Bernd Zerelles (copy) & AUDI AG (illustration)

At the base of the 100-centimeter-long foil mast sits the foil and tail assembly, whose upthrust lifts the board out of the water. To achieve the very high stiffness and low weight required, all three components are carbon fiber. The jet-propulsion system is made of aluminum, which ensures that the components are cooled automatically by the water temperature.


A battery output of between three and five kilowatts is sufficient to power the Audi e-foil, depending on the rider’s weight. A battery charging time of one hour offers a range in excess of 30 kilometers. The hydrofoil lifts out of the water at around 17 kilometers per hour and can reach speeds of up to 45 kilometers per hour.