What features make the Audi A7 a sustainable and efficient choice?

I am considering buying an Audi A7 and want to know what sets it apart from other luxury cars in terms of sustainability and efficiency. I've heard about Audi's e-tron technology but would like to know more details from actual owners.

The Audi A7's e-tron technology includes regenerative braking and an advanced cooling system for the battery, making it one of the most sustainable luxury cars on the market. My advice would be to also consider investing in a home charger to maximize the e-tron's efficiency.

I've found that the A7's start-stop system helps conserve fuel in stop-and-go traffic, and its lightweight aluminum body also contributes to its efficiency. However, keep in mind that the e-tron technology only provides a limited range on full electric mode, so plan your trips accordingly.