Audi A6 S Line - Second owner - No paint and agency maintained until 350000 KM. Audi A6 S Line all wheel drive with advanced Quattro System. S Line loaded with all the options. GCC Specs. With metallic grey exterior, grey leather interior and dark wood trim, it is the definition of executive luxury and comfort. Powered by 3.2 liter V6 engine and a 6 - speed automatic Quattro transmission, it produces 255