This video shows how to replace spark plugs on 2012-1018 Audi A6 C7 and A7 C7 3.0T

Tools & Parts:
Torx T-20 (to disconnect plugs from coils)
16mm socket for spark plugs
10mm socket for coolant tank
Spark Plugs - NGK 94460 (PFR8S8EG) Laser Platinum Spark Plugs
Torque specs for tightening spark plugs - 22 lbs torque