Peugeot 308 1.6 THP: common problems and used-car checks | DVI Reports

Peugeot 308 1.6 THP: common problems and used-car checks

First-generation Peugeot 308 1.6 THP/EP6 inspection guide: timing/VVT, ignition, oil leaks, brakes and documented history. Do not apply it unchanged to the T9.

Quick answer: is it worth considering?

A Peugeot 308 1.6 THP is worth considering only when it starts quietly from cold, has documented oil and timing history and shows no correlation faults, misfires or coolant loss. Confirm the engine code, output and body style before applying information from another EP6 variant.

Variants you should distinguish

• Confirm the T7 generation and exact EP6/THP code; output and hardware vary by year and market.
• Identify the gearbox and review its history separately from the engine.
• On the 308 CC, inspect the retractable roof, drains and water entry as a separate system.

Questions to ask the seller

• When were timing components inspected or replaced, and is there a parts invoice?
• Which oil specification and interval were used, and how much oil is added between changes?
• Has the car overheated, lost coolant or received thermostat/water-pump work?
• Why were coils, plugs, injectors, the high-pressure pump or VVT solenoids replaced, if applicable?

Step-by-step road test

1. Start fully cold and listen without revving; pronounced metallic timing noise should end the assessment.
2. Observe idle, misfires and light-to-medium acceleration without loading a cold engine.
3. Check gearbox operation, temperature and messages after full warm-up.
4. Test braking and steering; on a 308 CC operate the roof on level ground and inspect for water marks.

OBD scan plan

1. Read current, pending and permanent ECU codes before clearing, especially P0011/P0014/P0016/P0017 and P0300–P0304.
2. Save freeze-frame data and compare requested/actual cam angles and VVT commands where supported.
3. Review misfire counters, fuel trims and fuel pressure only against references for the exact engine.
4. No stored codes does not rule out mechanical wear; correlate the scan with a cold start and service history.

Post-purchase maintenance priorities

• Correct oil level and specification with documented intervals and regular level checks.
• Timing and VVT inspected using the exact-engine procedure rather than mileage alone.
• Cooling, ignition and fuel delivery diagnosed as separate systems when symptoms occur.

Red flags: pause the purchase

• Pronounced timing noise, recurring P0016 or suspected low oil pressure.
• Unexplained coolant loss, overheating or persistent smoke.
• The seller refuses a cold start, independent scan or invoices for major work.

Frequently asked questions

Reliability depends heavily on the EP6 version, oil and timing history, cooling system and quality of previous work. A documented, inspected car should not be judged like one with no records.

Pause until crank/cam signals, VVT operation, oil pressure and mechanical timing have been checked. P0016 does not prove a stretched chain, but the underlying fault can be expensive.

There is no single figure: electrical diagnosis, a VVT solenoid, ignition work and timing repair are different jobs. Request separate quotes once the root cause is confirmed.

Additional official checks

Use the VIN for the exact vehicle manual, campaigns and documentation.

• Peugeot Service Box — VIN-filtered technical documentation

What the evidence supports

The ADAC report covers first-generation petrol models generally, not an incidence rate for 1.6 THP alone. It does not say every example has timing problems.

Reported issues and inspection priorities

1. 1. ADAC highlights worn brake discs and lines, oil leaks and emissions-test issues on the first-generation 308. Inspect the physical systems.
2. 2. ADAC breakdown data for the generation mentions starter batteries, ignition coils/plugs, alternators, injectors and starters. These are areas to inspect, not proof of a fault in a particular car.
3. 3. For 1.6 THP: if P0016/P0011/P0014 or timing noise is present, request cam/crank correlation, VVT control and oil-pressure tests before parts replacement.
4. 4. For the 308 CC, test the roof operation and for water entry separately; do not generalise body issues to hatchback and SW.

Pre-purchase checklist

• Request a cold start and record timing noise, misfires and warning lights.
• Scan all accessible modules before clearing codes; request invoices for past timing-system work.
• Inspect oil level/history and leaks, coolant, brakes and the electrical system.
• Stop the inspection for severe noise or overheating; road-test only a normally running vehicle.

Costs to consider

Obtain separate quotes for diagnostics, timing/VVT, ignition and brakes. No unsupported fixed THP repair price is provided.

Related codes and systems

Sources and limitations

An inspection or breakdown report cannot diagnose an individual car. Confirm year, engine, owner manual and recall eligibility by VIN.

• ADAC — Peugeot 308 2007–2013 petrol used-car report