What are the most common Citroen C4 problems?

According to Au7o's analysis of 85+ owner reports, the 2025-2025 Citroen C4 has 1 documented issues. The most frequently reported are: Diesel DPF Regeneration Issues. Of these, 1 is rated critical and should be addressed promptly.

Is the Citroen C4 reliable?

The 2025-2025 Citroen C4 has 1 known issues documented across 85+ owner reports. 1 issue is rated critical: Diesel DPF Regeneration Issues. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Citroen C4 problems?

Repair costs for known Citroen C4 issues range from $300 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Diesel DPF Regeneration Issues, typically costs $300-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

2025 Citroen C4 Problems: 1 Issues Every Owner Should Know

2025 model year · 85+ owner reports · Updated May 2026

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According to Au7o's analysis of 85+ owner reports, the 2025 Citroen C4 has 1 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 $300 to $2,500. DIY maintenance guides at au7o.io.

All 1 Known Issues

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Community Reported

85 owners

On the 2004-2026 Citroen C4, the C4 diesel models suffer from the common PSA DPF regeneration problems, with the additive-based system requiring regular Eolys fluid top-ups. Short journey use prevents passive regeneration from completing.

This issue also affects: Audi Q7, Citroen Berlingo, Citroen C5 Aircross

Common Symptoms

DPF warning light
Engine limp mode
Power loss
Increased fuel consumption

How to Fix

Top up Eolys additive, force DPF regeneration via diagnostic tool, and advise regular motorway driving. Severely blocked filters require professional cleaning or replacement.

Typical repair cost:$300 - $2,500

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Community Reported

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2025 Citroen C4 Problems: 1 Issues Every Owner Should Know

All 1 Known Issues

2004-2026 Citroen C4: Diesel DPF Regeneration Issues#

Common Symptoms

How to Fix

Research This Issue

Other Citroen Models

Frequently Asked Questions

What are the most common Citroen C4 problems?

Is the Citroen C4 reliable?

How much does it cost to fix common Citroen C4 problems?

What is the 2004-2026 Citroen C4 Diesel DPF Regeneration Issues?