1.6 THP (EP6CDT)
2010–2018 · petrol · 1598cc · 156hp
Engine codes: EP6CDT, 5FV, 5G
Reliability, common problems and owner reviews for the Peugeot 508 1.6 THP (EP6CDT). Check this before you buy used.
The 1.6 THP (EP6, the BMW/PSA Prince engine shared with the 308, C4, Mini and DS) makes the 508 lively but is the problem petrol: timing-chain stretch/rattle, direct-injection intake-valve carbon, high-pressure-fuel-pump and turbo wear, and a reputation for oil consumption. It can be kept healthy with obsessive oil discipline and the chain done early, but in a big saloon most buyers are better served by the diesel. Buy only with full chain/carbon history — an unknown EP6 is a wallet risk.
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 207— 1.6 VTi / THP (EP6, Prince)150hp
- Peugeot 308— 1.6 THP (EP6DT / EP6CDT, turbo)150hp
- Peugeot 308— 1.6 VTi (EP6, naturally aspirated)120hp
- Citroën C4 Picasso— 1.6 THP / VTi (EP6)156hp
Known Issues
Chain stretches → rattle on cold start → can skip. Common EP6 failure.
Fix / Workaround: Replace chain kit at first rattle; strict oil.
Repair cost: €600–€1800
Typically appears after: 90,000 km
DI valve carbon; high-pressure pump and turbo wear.
Fix / Workaround: Walnut-blast intake; replace HPFP/turbo as needed.
Repair cost: €300–€1600
Typically appears after: 100,000 km
Mileage Thresholds
After 120,000 km: Chain + carbon attention overdue.
Pre-Purchase Checklist
- ☐Cold-start chain rattle = walk away
- ☐Same EP6 as 308 / Mini
- ☐Full oil + chain history essential
Frequently asked questions
Is the Peugeot 508 1.6 THP (EP6CDT) reliable?
Problematic — The 1.6 THP (EP6, the BMW/PSA Prince engine shared with the 308, C4, Mini and DS) makes the 508 lively but is the problem petrol: timing-chain stretch/rattle, direct-injection intake-valve carbon, high-pressure-fuel-pump and turbo wear, and a reputation for oil consumption. It can be kept healthy with obsessive oil discipline and the chain done early, but in a big saloon most buyers are better served by the diesel. Buy only with full chain/carbon history — an unknown EP6 is a wallet risk.
What are the common problems and reviews for the Peugeot 508 1.6 THP (EP6CDT)?
The most commonly reported problems: Timing chain stretch (EP6), Intake carbon / HPFP / turbo.
Is a used Peugeot 508 1.6 THP (EP6CDT) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.