How does the Audi e-Tron achieve efficient regenerative braking?

I'm considering buying an Audi e-Tron and I've heard it has impressive regenerative braking capabilities. Can someone explain how it works and why it's efficient?

The Audi e-Tron uses a combination of its electric motor and traditional brakes to achieve regenerative braking. When you release the accelerator pedal, the motor switches to generator mode and converts the kinetic energy of the car into electrical energy, which is stored in the battery for later use. This reduces the strain on the traditional brakes and allows for longer-lasting brake pads and discs.

In addition to the traditional brake pads, the Audi e-Tron also has an electrohydraulic actuation system that regulates the braking force according to your driving style and the current road conditions. This allows for efficient and smooth deceleration, as well as increased range from regenerative braking.

To maximize regenerative braking, it's important to use the provided driving modes. In 'efficiency' mode, the e-Tron will automatically maximize regenerative braking to provide the most efficient driving experience. You can also use the paddles on the steering wheel to adjust the level of regenerative braking, with stronger braking resulting in more energy being captured and stored.