Audi S4 owners have reported 1 problem related to crankcase (pcv) (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Audi S4 based on all problems reported for the S4.
Pcv housing and lines failed. Caused pressure to build up thus shooting off the oil cap shooting oil everywhere! in addition to that it is a huge fire hazard considering the turbo is right next to it.
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all problems of the 2018 Audi S4
🔎.