The 2014 Peugeot 108 shares its platform with the Toyota Aygo and Citroën C1, using proven Toyota-PSA co-developed powertrains. While generally reliable for a city car, the 1.0L VTi and 1.2L PureTech engines have specific weak points related to valve train wear and timing chain issues that emerge with age and mileage.
Timing Chain Stretch and Tensioner Failure
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: Rattling noise on cold start that disappears after warmup, Check engine light with timing-related codes, Rough idle or misfires, Engine may jump timing completely leading to valve contact
Fix: Requires timing chain kit with tensioner, guides, and VVT solenoid replacement. 6-8 hours labor due to cramped engine bay and front-end disassembly needed for proper access. Many shops recommend replacing water pump simultaneously since it's accessible.
Estimated cost: $1,200-2,000
Hydraulic Valve Lifter/Tappet Noise and Failure
Common · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Persistent ticking or tapping from cylinder head, Noise louder when cold, may reduce but not disappear when warm, Loss of power if lifter collapses completely, May trigger misfire codes on affected cylinder
Fix: Requires cylinder head removal to replace all lifters/tappets as a set. This is a 10-12 hour job including head removal, cleaning, valve inspection, and reinstallation with new head gasket. Oil passages should be thoroughly flushed.
Estimated cost: $1,800-3,200
Head Gasket Failure (1.0L VTi)
Occasional · high severityTypical onset: 90,000-140,000 mi
Symptoms: White smoke from exhaust, Coolant loss with no visible leaks, Milky oil on dipstick or filler cap, Overheating episodes, Bubbling in coolant reservoir
Fix: Head gasket replacement requires cylinder head removal, resurfacing if warped, and thorough inspection of head bolts. The 1.0L three-cylinder runs hot in city traffic which accelerates failure. 8-10 hours labor, and head must be checked for cracks.
Estimated cost: $1,500-2,800
Automatic Transmission Oil Cooler Line Leaks
Occasional · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Transmission fluid spots under vehicle, Burnt transmission fluid smell, Harsh or delayed shifts when fluid is low, Transmission overheating warning if equipped
Fix: The hard lines and rubber hoses to the cooler corrode or crack, especially at connection points. Replacement involves new lines, cooler inspection, and complete fluid flush. 3-4 hours labor if caught early before internal damage occurs.
Estimated cost: $600-1,200
Transmission Mount Deterioration
Common · low severityTypical onset: 60,000-90,000 mi
Symptoms: Clunking when shifting from park to drive or reverse, Excessive engine movement visible when accelerating, Vibration at idle especially with AC on, Transmission tunnel vibration during acceleration
Fix: The rubber transmission mount fails prematurely, likely due to small engine bay and heat exposure. Replacement is straightforward but requires supporting the transmission. 1.5-2 hours labor.
Estimated cost: $250-450
Fuel Filter Clogging (Diesel variants in some markets)
Occasional · medium severityTypical onset: 50,000-80,000 mi
Symptoms: Hard starting especially in cold weather, Loss of power under acceleration, Engine cutting out at highway speeds, Rough idle and hesitation
Fix: While most US-market 108s are gasoline, imported diesel models suffer from fuel filter clogging earlier than scheduled maintenance suggests. Filter and housing replacement takes 1-1.5 hours including bleeding fuel system.
Estimated cost: $200-400
Buy one under 60,000 miles with documented oil changes, but budget $2,000-3,000 for timing chain and valve train work if you're buying higher mileage — otherwise a surprisingly solid city car.
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.