✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
Timing chain stretch and noise (mainly early engines to 2013)
usually 80,000–180,000 km · High risk
model years 2006–2013 only
Signs: Rattle on cold start, cam/crank correlation or timing fault codes; if ignored the chain can jump a tooth
Fix: Replace the complete chain kit (chain, guides, tensioner, sprockets, and the cam phaser if worn); change oil more often
€500–1,100
Manifold catalytic converter breaks up; debris can score the cylinders
usually 60,000–200,000 km · High risk
Signs: Rattle from the exhaust manifold, catalyst efficiency codes (P0420), then rising oil use and loss of compression
Fix: Fix misfires at once; inspect the catalyst through the front lambda sensor hole and replace it if it crumbles; scored cylinders need an engine overhaul
€400–3,500
Oil consumption from worn piston rings or distorted bores
usually 120,000–220,000 km · Medium risk
Signs: Oil level drops between services, blue smoke at start, oil-fouled spark plugs
Fix: Measure consumption and compression; early cases may respond to ring cleaning, otherwise new pistons and rings (and liners or honing)
€300–3,000
Carbon deposits on the intake valves (GDi direct injection)
usually 100,000–180,000 km · Medium risk
engine codes: G4FD, G4FT
Signs: Rough idle, misfires, hesitation and higher fuel use
Fix: Remove the intake manifold and clean the valves (walnut blasting or mechanical cleaning)
€300–600
Valve clearance drift (shim tappets, no hydraulic lifters)
usually 90,000–200,000 km · Wear part
Signs: Ticking from the head, rough cold running; on LPG, burnt exhaust valves if left too tight
Fix: Check clearances about every 90,000-100,000 km (more often on LPG) and correct with new shims
€200–450
Oil leak from the valve cover gasket
usually 40,000–160,000 km · Wear part
Signs: Oil sweating on the head and around the plug wells, burning-oil smell
Fix: Replace the valve cover gasket and the plug-well seals
€100–200