Audi, Audi Case Studies, Car Repair and Servicing, Case Studies, Video Case StudiesAudi Case Study 16: [Video] Case Study of the Audi A6 Engine Posted on May 26, 2020November 20, 2020 by admin 26 May Have you ever wondered why the Audi A6 engine is roundish? Take a peek at the video to kill your curiosity. admin Audi Case Study 15: Resolved “Missing Coolant Issue” on Audi S5 Audi Case Study 17: Eugene’s Audi A5 Engine Overhaul