Citroën C4 Problems: 3 Issues Every Owner Should Know
2004-2026 model years · 215+ owner reports · Updated April 2026
According to Au7o's analysis of 215+ owner reports, the 2004-2026 Citroën C4 has 3 documented known issues, with 1 rated critical. The most serious is Diesel DPF Regeneration Issues ($300-$2,500 repair). Across all issues, repair costs range from $150 to $2,500. DIY maintenance guides at au7o.io.