Why does the Audi A7 have a rear wing?

I've seen that some models of the Audi A7 have a rear wing, but I'm not sure why. Can anyone explain the purpose of this feature and if it's worth the extra cost?

The rear wing on the Audi A7 is not just for looks, it serves an aerodynamic purpose. It helps improve stability and reduce drag, resulting in better overall performance and fuel efficiency.

If you're someone who enjoys taking your Audi A7 to the track, the rear wing can greatly improve cornering and handling at high speeds. However, for regular city driving, it may not make a noticeable difference.

Having a rear wing can also increase the resale value of your Audi A7 as it is a desirable feature for performance enthusiasts. So, if you plan on selling your car in the future, the extra cost may be worth it.