The 2015 Peugeot 108 shares its platform with the Toyota Aygo and Citroën C1, using Toyota-derived 1.0L VTi and PSA's 1.2L PureTech engines. While the 1.0L is generally robust, the 1.2L PureTech has significant timing chain and oiling issues that emerge early.
1.2L PureTech Timing Chain Premature Wear
Common · high severityTypical onset: 40,000-80,000 mi
Symptoms: rattling noise on cold start that quiets after warm-up, check engine light with timing correlation codes, metallic chain noise from front of engine, rough idle or hesitation
Fix: Complete timing chain kit replacement including tensioner, guides, and often camshaft phasers. Critical to inspect cam lobes for wear while open. 8-12 labor hours due to tight engine bay access. Early intervention prevents catastrophic engine damage.
Estimated cost: $1,800-3,200
1.2L PureTech Wet Timing Belt Oil Contamination
Common · high severityTypical onset: 50,000-90,000 mi
Symptoms: oil mixing with coolant, white smoke from exhaust, coolant loss without external leaks, timing belt soaked in oil during inspection
Fix: The wet belt design on PureTech engines allows oil contamination that deteriorates the belt prematurely. Requires timing belt, water pump, seals, and often head gasket replacement. 10-14 labor hours. Some engines suffer catastrophic failure before symptoms appear.
Estimated cost: $2,500-4,500
Hydraulic Valve Lifter Noise and Failure
Occasional · medium severityTypical onset: 60,000-100,000 mi
Symptoms: persistent ticking from valve cover, noise worse when cold, loss of power on acceleration, uneven idle quality
Fix: Both engines use hydraulic lifters that wear or clog with inadequate oil changes. Individual lifter replacement if caught early (4-5 hours), but often requires full set replacement with camshaft inspection (8-10 hours). Extended oil change intervals accelerate this issue.
Estimated cost: $800-2,000
Transmission Mount Failure
Common · low severityTypical onset: 50,000-90,000 mi
Symptoms: excessive engine movement during acceleration, clunking when shifting from reverse to drive, vibration at idle in gear, transmission appears to 'rock' visibly
Fix: Rubber transmission mounts deteriorate from heat and stress. Requires support of engine/trans during replacement. 2-3 labor hours. Often both engine and transmission mounts need replacement simultaneously.
Estimated cost: $300-600
Head Gasket Failure (1.2L PureTech)
Occasional · high severityTypical onset: 70,000-110,000 mi
Symptoms: overheating without obvious cause, white exhaust smoke, coolant in oil (milky dipstick), compression loss in adjacent cylinders
Fix: Often triggered by timing chain/belt issues causing head warping. Requires head removal, resurfacing, and gasket replacement. Must inspect head for cracks and warping (often beyond spec). 10-12 labor hours. Verify timing components during repair.
Estimated cost: $1,500-2,800
Harmonic Balancer Deterioration
Occasional · medium severityTypical onset: 80,000-120,000 mi
Symptoms: vibration that increases with RPM, visible wobble of crankshaft pulley, serpentine belt wear or throwing, rumbling from front of engine
Fix: Rubber isolator in harmonic balancer separates, causing pulley wobble. Must be replaced before damaging crankshaft or accessories. 3-4 labor hours including serpentine belt replacement. More common in harsh climates.
Estimated cost: $400-700
Buy only with the 1.0L VTi engine and verified service history — the 1.2L PureTech is a reliability disaster waiting to happen and should be avoided regardless of price.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.