2008 — 2013
1.6L I4 (EP6)
Petrol
Start the engine from dead cold and listen closely to the front-left side of the engine bay for a harsh metallic rattling or slapping noise that subsides as the engine warms up. | Note: The EP6 Prince engine is notorious for timing chain stretch and hydraulic tensioner failure (often called the 'death rattle'). Ignoring this can lead to skipped timing and catastrophic valve-to-piston contact.
Accelerate heavily up a steep hill or on a motorway on-ramp in a high gear to put the engine under load; feel for sudden hesitation, stuttering, or the car entering 'Limp Home' mode with a 'Depollution System Fault' warning. | Note: The High-Pressure Fuel Pump (HPFP) on turbocharged EP6 (THP) variants is a frequent failure point in New Zealand, resulting in fuel starvation under load and cold-start misfires.
Check the exhaust pipe for blue smoke on startup or after idling for a few minutes, and feel for any erratic, lumpy idling once the engine has warmed up. | Note: EP6 engines suffer from premature hardening of the valve stem seals, leading to severe oil consumption, as well as rapid carbon buildup on the intake valves (direct-injection THP models only) which chokes performance.
Drive the car until the transmission is fully warm, ensuring it shifts cleanly through all gears. Watch out for sudden harsh downshifts (clunking), gear slippage, or a 'Gearbox Fault' warning on the dash. | Note: The AL4/AT8 4-speed automatic transmission is highly sensitive to pressure regulation solenoid failures and fluid degradation, which often forces the gearbox into a 3rd-gear 'safe mode'.
Minor service interval. Ensure high-quality 5W-30 synthetic oil (PSA B71 2290 spec) is used. Frequent oil changes are the single most effective way to prevent premature timing chain and VANOS sprocket wear on this engine.
Intermediate service. Replace spark plugs and cabin filters. Inspect the plastic coolant thermostat housing and water pump pulley for slow leaks or hairline cracks, which are extremely common by this mileage.
Major milestone. Budget for a preventative timing chain assembly replacement if not already documented. Consider a transmission fluid flush, walnut blasting for intake valves (THP models), and inspection of front suspension bushings and shocks.
Strictly adhere to a 10,000km or 12-month oil change interval using only PSA-approved low-SAPS oil to minimize carbon deposits and protect the chain.
Monitor the engine oil level weekly; the EP6 can safely consume up to 1 litre per 1,000km when valve stem seals start to degrade.
Inspect the plastic thermostat housing and bypass pipe behind the engine block for coolant weeping during every service.
Keep a high-quality AGM battery installed; low voltage in the 308 causes a cascade of phantom electrical gremlins, ABS faults, and ECU communication dropouts.
Flush and replace the automatic transmission fluid (ATF) every 40,000km to 50,000km to prolong the life of the internal hydraulic solenoids.
Estimated repair costs if issues arise
Essential preventative maintenance or immediate remedy for cold-start rattle. Must include new chain, guides, tensioner, and seals.
Required if experiencing persistent limp mode, cold-start stalling, or fuel rail pressure fault codes on turbo models.
A safety-critical fix to prevent sudden overheating. The plastic housings warp and leak coolant onto electrical connectors.
Recommended every 80,000km for direct-injection (THP) variants to restore lost fuel economy, smooth out idle, and recover throttle response.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer