Citroen C42021

Known issues

• DPF regeneration issues leading to limp mode and expensive cleaning/replacement (€800–€1,500)
• Infotainment system freezing, touchscreen unresponsiveness, and software glitches requiring module reprogramming
• EGR valve carbon buildup causing rough idle and increased emissions, particularly with short urban drives
• Water ingress into door seals and window regulator failures causing interior damp and electrical gremlins
• Diesel particulate filter warning light persisting after regeneration cycles, requiring diagnostic reset
• Occasional clutch hydraulic issues on manual variants affecting biting point consistency

Good for

• Practical, spacious interior with flexible storage and good visibility for city and rural driving
• Fuel economy around 45–50 mpg in real-world mixed driving when engine is warm and DPF is clean
• Comfortable ride quality with well-tuned suspension suitable for Irish B-roads
• Low running costs once DPF is maintained; 1.5 diesel is a proven, simple engine with good longevity