Peugeot 2008 Mk1 1.2 PureTech

The 1.2 PureTech EB2 uses a timing belt running submerged in engine oil. Over time, fuel dilution and oil degradation cause the belt material to break down, shedding rubber particles into the oil system. These fragments clog the oil pickup strainer, variable valve timing solenoids, and vacuum pump, leading to oil pressure warnings — especially during braking or cornering. In the worst case, the belt snaps entirely, causing catastrophic valve-piston contact as this is an interference engine. PSA originally specified a 180,000 km replacement interval but reduced it to 100,000 km (or 6 years) after widespread failures. Belt replacement costs €600-1,000 at an independent garage (parts approximately €225, labor 4-6 hours). If belt debris has already contaminated the VVT system, oil pump, or vacuum pump, costs escalate to €1,500-3,000. If the belt snaps and destroys the engine, expect €3,000-5,000 for an engine replacement or rebuild. Pre-2017 belts are the most problematic. Stellantis launched a compensation programme in 2024 covering 100% of repair costs for engines under 10 years or 180,000 km with documented service history.

Many 1.2 PureTech owners report oil consumption between 0.5 and 1 litre per 1,000 km — well above Peugeot's stated maximum of 0.25L per 1,000 km. The root cause is carbon buildup on the piston oil control rings, which prevents them from scraping oil effectively. Short trips and gentle driving exacerbate the problem as the engine rarely reaches optimal operating temperature. High oil consumption also accelerates timing belt degradation since the belt is oil-immersed. In mild cases, more frequent oil changes (every 7,500 km) and occasional sustained motorway driving can manage consumption at the cost of extra oil top-ups (€50-100/year). Severe cases require piston ring cleaning or replacement at €1,500-2,500. The Stellantis compensation programme may cover these repairs for qualifying vehicles.

The EB2 engine uses an electric water pump integrated with the thermostat housing. The water pump shaft seal can fail from corrosion and contamination, while the plastic thermostat housing develops micro-cracks from thermal cycling. Symptoms include low coolant warnings, poor cabin heating, or visible coolant pooling underneath the car. The integrated design means the entire unit typically needs replacing. Parts cost €200-350 plus 3-4 hours labor. If overheating occurs before the leak is detected, head gasket damage can push costs significantly higher. Peugeot updated the thermostat housing design in later production runs. Checking coolant level at every fuel stop is advisable on higher-mileage examples.

The Positive Crankcase Ventilation valve on the PureTech engine is integrated into the rocker cover and is not serviceable separately. When the PCV membrane fails, symptoms include a whistling or hissing sound from the engine, rough idle, misfires, increased oil consumption, and poor fuel economy. Since Peugeot does not sell the PCV membrane as a separate part, the entire rocker cover assembly must be replaced. Parts cost €180-250, plus 2-3 hours labor. This issue typically appears between 60,000 and 120,000 km. Aftermarket PCV membrane repair kits exist but require careful installation.

The three-cylinder engine uses individual coil-on-plug ignition coils that can fail prematurely, typically between 60,000 and 100,000 km. Symptoms include rough running, misfires, loss of power, and engine warning light. Importantly, the PureTech engine requires specific spark plugs — incorrect aftermarket plugs (particularly certain NGK specifications) can cause misfires and even piston damage on the turbo versions. Always use Bosch ZR5 SPP 3320 or the exact OEM specification. Replacing all three coils and spark plugs costs €150-400. Early factory-fitted spark plugs on some production runs had a defect causing plug break-up, which was addressed via ECU software update and revised plug specification.

Early 2008 Mk1 models (2013-2015) with the ETG/EGC automated manual gearbox are widely considered problematic. The jerky, slow gear changes are a design characteristic rather than a fault, but the clutch actuator and hydraulic pump can fail, requiring expensive repair or replacement. Clutch actuator replacement costs €800-1,500, and a complete gearbox overhaul can reach €2,000. The later EAT6 automatic (Aisin torque converter, introduced 2016) is significantly better but still has occasional low-speed shudder reports. Manual gearbox versions are by far the most reliable choice. If considering an automatic, strongly prefer the EAT6 over the ETG.