A7 owners; does your car have launch capability. I came across an article which indicated launch control sequence for S7 not sure if it is also available on A7
How To Use Launch Control On The Audi S7
1.) Put stability control in sport (push and hold for more than two seconds).
2.) Set "Drive Select" in dynamic.
3.) Depress brake with left foot.
4.) Depress gas with right foot.
5.) Floor it.
6.) Release brake.