Audi S4 excessive oil consumption due to faulty spark plug oil seals on Audi S4

Some Audi S4 owners report experiencing excessive oil consumption attributed to several factors, primarily leaks around the piston rings, particularly in first-generation TFSI engines. Additionally, worn piston rings can compromise the seal between the combustible air-fuel mixture and engine oil, further increasing oil consumption. Many owners also note that faulty Positive Crankcase Ventilation (PCV) valves are a common culprit behind oil consumption issues. Furthermore, carbon build-up can lead to misfires during cold starts, resulting in fouled spark plugs and exacerbated oil consumption. Lastly, some owners may mistakenly identify oil leaks from components like the valve cover gasket or oil filter housing as oil consumption problems. It is crucial for owners to address these known issues to effectively mitigate oil consumption concerns.