Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2016 Audi A3 and 2015 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.
-- Start the engine and let it run at idle.
-- Seal the tail pipes with cloths or plugs during the leakage test.
-- Check for leaks where the exhaust manifold attaches to the cylinder head and where the turbocharger attaches to the front exhaust pipe.
-- Repair detected leaks.