Audi e-tron FE04

The Audi e-tron FE04 for the fourth season is a true single-seater race car and the new generation of Lucas di Grassi’s championship-winning car.

Key facts
Audi e-tron FE04

Electric motor
180 kW power output (in the race)
200 kW power output (in qualifying)
3.5 sec. 0–100 km/h
225 km/h top speed
Rear-wheel drive
1-speed transmission
880 kg minimum weight (incl. driver)
28 kWh battery
5.000 mm length
1.790 mm width
1.070 mm height

The combination of the motor and transmission, which Audi and technology partner Schaeffler have jointly developed, is the car’s centerpiece. The engineers primarily focused on designing the motor-generator unit (MGU) for even greater efficiency. As a result, acceleration out of corners in particular is enhanced.

Power to the Audi e-tron FE04 is supplied by a battery weighing 200 kilograms that Williams Advanced Engineering has developed and that is identical for all cars. The lithium-ion battery has a capacity of 34 kWh of which 28 kWh may be used. It sits between the driver’s seat and the powertrain.

To transmit the power to the wheels, Audi Sport ABT Schaeffler in the new season is using a high-efficiency transmission with one instead of the previous three gears. A central display provides all the key information on the condition of the MGU, the system temperatures, which are particularly important with an electrically operated race car, and the current charge state of the battery.

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