How do I activate the regenerative braking feature on my Audi e-Tron?

I've heard that the regenerative braking feature on the Audi e-Tron can help improve efficiency and extend battery life. How do I activate this feature and use it effectively?

To activate regenerative braking on your Audi e-Tron, simply press and hold the gear selector all the way to the left. This will put the car into 'B' mode, which stands for regeneration. When you release the accelerator, the car will start to slow down and convert that energy into battery power.