UK Reliability Directory

Citroën C3 (Mk3)

Production Years: 2017 - 20244 Documented Faults

The third-generation C3 introduced "Airbumps" and a more SUV-like stance. It shares its platform with the Peugeot 208 and suffers from similar engine-related issues.

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Common Faults & Reliability

These are the most common documented problems for the Citroën C3 (Mk3), sorted by their typical impact and frequency.

1.2 PureTech "Wet Belt" Degradation

high severity

The timing belt runs in oil and can degrade, shedding debris that blocks the oil pickup. This leads to oil starvation, vacuum pump failure, and a dangerous loss of braking assistance (Recall R/2020/331).

Est. repair cost:£600–£1,800

AdBlue Tank and Pump Failure

high severity

The AdBlue system on BlueHDi diesels is prone to pump failure, often requiring a full tank replacement.

Est. repair cost:£800–£1,300

Exhaust Back Box Detachment

medium severity

The exhaust back box support rod or joint can corrode prematurely, causing the muffler to hang low or detach entirely.

Est. repair cost:£150–£300
View All 4 Documented Issues

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