1.6 THP (EP6DT / EP6CDT, turbo)
2007–2013 · petrol · 1598cc · 150hp
Engine codes: EP6DT, EP6CDT, 5FX
Reliability, common problems and owner reviews for the Peugeot 308 1.6 THP (EP6DT / EP6CDT, turbo). Check this before you buy used.
The turbo Prince (BMW-PSA, also in MINI). Strong but troublesome: timing chain/tensioner failure (pre-May-2009 worst — rattle from the passenger side warns of imminent valve/piston damage), plus carbon and high-pressure-pump issues. Needs disciplined oil and a chain history; otherwise expensive.
Same engine, other cars
This is the same physical engine (EP6) sold under different names across brands. Reliability is broadly shared — cross-check these:
- Peugeot 3008— 1.6 THP / VTi (EP6, Prince)156hp
- Peugeot 5008— 1.6 THP (EP6)156hp
- Citroën C4— 1.6 VTi / THP (EP6, Prince)150hp
- Citroën C3— 1.6 VTi / THP (EP6, Prince)120hp
- Citroën Berlingo— 1.6 VTi (EP6)120hp
- Mini Hatch— Cooper / Cooper S (1.6 EP6)175hp
- Peugeot 508— 1.6 THP (EP6CDT)156hp
- Peugeot 207— 1.6 VTi / THP (EP6, Prince)150hp
- Peugeot 308— 1.6 VTi (EP6, naturally aspirated)120hp
- Citroën C4 Picasso— 1.6 THP / VTi (EP6)156hp
Known Issues
Tensioner wears (pre-May-2009 especially); chain skips → pistons hit valves. Passenger-side rattle is the warning.
Fix / Workaround: Replace chain + tensioner (revised parts); use correct oil, keep topped.
Repair cost: €700–€1500
Typically appears after: 90,000 km
Heavy DI carbon on intake valves.
Fix / Workaround: Walnut blast (recurs).
Repair cost: €150–€350
Typically appears after: 90,000 km
HP pump faults cause running issues.
Fix / Workaround: Replace HP pump.
Repair cost: €250–€700
Year Cutoffs
Mileage Thresholds
After 90,000 km: Chain/carbon/HP-pump issues cluster.
Pre-Purchase Checklist
- ☐Cold-start rattle check (passenger side) essential
- ☐Timing chain/tensioner history
- ☐Decoke history
- ☐Disciplined oil changes
Frequently asked questions
Is the Peugeot 308 1.6 THP (EP6DT / EP6CDT, turbo) reliable?
Problematic — The turbo Prince (BMW-PSA, also in MINI). Strong but troublesome: timing chain/tensioner failure (pre-May-2009 worst — rattle from the passenger side warns of imminent valve/piston damage), plus carbon and high-pressure-pump issues. Needs disciplined oil and a chain history; otherwise expensive.
What are the common problems and reviews for the Peugeot 308 1.6 THP (EP6DT / EP6CDT, turbo)?
The most commonly reported problems: Timing chain / tensioner failure, Carbon build-up, High-pressure fuel pump.
Is a used Peugeot 308 1.6 THP (EP6DT / EP6CDT, turbo) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.