1.6 VTi / THP (EP6, Prince)

2009–2016 · petrol · 1598cc · 120hp

Engine codes: EP6, EP6DT, 5FW, 5FX

Problematic

Reliability, common problems and owner reviews for the Citroen C3 1.6 VTi / THP (EP6, Prince). Check this before you buy used.

The BMW-PSA Prince 1.6 — timing chain stretch (cold-start rattle), oil consumption, and on the THP turbo coolant loss/overheating and HP-pump faults. Disciplined oil and a chain history are essential.

Same engine, other cars

This is the same physical engine (EP6) sold under different names across brands. Reliability is broadly shared — cross-check these:

Known Issues

Timing chain stretchcritical

Chain stretches → can skip teeth and bend valves.

Fix / Workaround: Replace chain + tensioner at first rattle; correct oil, keep topped.

Repair cost: €600–€1400

Typically appears after: 90,000 km

Oil consumption / coolant (THP)recurring

Oil use; THP coolant loss/overheating.

Fix / Workaround: Check oil + coolant; fix leaks.

Repair cost: €150–€600

Mileage Thresholds

After 90,000 km: Chain/oil issues cluster.

Pre-Purchase Checklist

☐Cold-start rattle check (chain)
☐Check oil + coolant
☐Chain/HP-pump history

Frequently asked questions

Is the Citroen C3 1.6 VTi / THP (EP6, Prince) reliable?

Problematic — The BMW-PSA Prince 1.6 — timing chain stretch (cold-start rattle), oil consumption, and on the THP turbo coolant loss/overheating and HP-pump faults. Disciplined oil and a chain history are essential.

What are the common problems and reviews for the Citroen C3 1.6 VTi / THP (EP6, Prince)?

The most commonly reported problems: Timing chain stretch, Oil consumption / coolant (THP).

Is a used Citroen C3 1.6 VTi / THP (EP6, Prince) worth buying?

Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.