2021 PEUGEOT 108

Typical onset: 40,000-80,000 mi

Symptoms: rattling/slapping noise on cold start, oil contamination with rubber particles, check engine light with timing correlation codes, sudden loss of power or no-start

Fix: The PureTech uses a wet timing belt that disintegrates in engine oil, sending debris through the entire lubrication system. Requires complete engine teardown, oil system flush, new belt kit, oil pump, and often camshaft/lifter replacement due to debris damage. 12-16 hours labor if caught early, full engine replacement if catastrophic.

Estimated cost: $3,500-8,000

Typical onset: 50,000-90,000 mi

Symptoms: ticking/tapping noise from valve train especially when cold, noise increases with RPM, noise may quiet down when warm, occasional P0300-series misfire codes

Fix: Lifters fail prematurely often due to oil contamination from degrading timing belt material. Requires cylinder head removal and replacement of all lifters, plus thorough inspection of camshaft lobes. 8-10 hours labor. Often discovered during timing belt investigation.

Estimated cost: $2,000-3,500

Typical onset: 60,000-100,000 mi

Symptoms: transmission fluid puddles under car near radiator area, burnt smell after driving, erratic shifting or slipping, low transmission fluid on dipstick

Fix: Metal cooler lines corrode where they connect to radiator or transmission cooler, especially in salt-belt states. Lines themselves are inexpensive but require dropping subframe or extensive disassembly for access. 3-5 hours labor including fluid refill and system bleed.

Estimated cost: $600-1,200

Typical onset: 70,000-120,000 mi

Symptoms: excessive vibration at idle especially in Drive, clunking when accelerating or decelerating, visible engine movement when revving in Park, transmission feels notchy when shifting

Fix: The passenger-side transmission mount fails from oil contamination and normal wear. Small three-cylinder engines vibrate significantly, accelerating mount degradation. Replacement is straightforward but requires supporting engine weight. 2-3 hours labor.

Estimated cost: $300-600

Typical onset: 80,000-120,000 mi

Symptoms: white smoke from exhaust, coolant loss with no visible leaks, oil appears milky or foamy, overheating especially under load, rough idle and misfires

Fix: Head gasket failures often follow timing belt contamination or overheating events. Requires cylinder head removal, machining/inspection, new gasket set, and timing components. Critical to verify head isn't warped. 10-14 hours labor. Sometimes discovered alongside timing belt work.

Estimated cost: $2,500-4,500

Typical onset: 100,000+ mi

Symptoms: visible wobble on crankshaft pulley, squealing belt noise that persists after belt replacement, rough vibration at specific RPM ranges, rubber separation visible on pulley

Fix: The rubber damping layer separates from the hub, causing belt tracking issues and vibration. Replacement requires accessory belt removal and pulley puller. The 1.2L has limited access requiring subframe lowering on some model years. 3-4 hours labor.

Estimated cost: $500-900