2014 Audi A4 Problems: 4 Known Issues
2014 model year · 3,100+ owner reports · Updated September 2026
According to Au7o's analysis of 3,100+ owner reports, the 2014 Audi A4 has 4 documented known issues, with 1 rated critical. The most serious is S-Tronic (DSG) Mechatronic Unit Issues ($600-$4,000 repair). The most commonly reported issue is PCV Valve/Breather System Failure with 1,200 owner reports. Across all issues with published estimates, repair costs range from $150 to $4,000. DIY maintenance guides at au7o.io.