Peugeot 5008 1.2 PureTech Mk2

The 1.2 PureTech uses a wet timing belt that runs submerged in engine oil. Over time, fuel dilution degrades the oil, which attacks the rubber belt. As the belt deteriorates, fragments circulate through the oil system and can block the oil pickup strainer, starving the engine of lubrication. Gen1 engines (2017-early 2018) are most affected; Gen2 (late 2018-2023) uses improved belt materials but the same fundamental design. PSA originally specified a 180,000 km replacement interval, later reduced to 100,000 km or 6 years. Preventive replacement costs approximately 800-1,000 euros at an independent shop. If the belt fails catastrophically, engine replacement costs 3,500-5,000 euros. Stellantis has extended warranty coverage to 10 years / 180,000 km for belt and oil consumption related repairs (from March 2024), and launched a compensation platform for expenses incurred between January 2022 and December 2024. The 5008's heavier body puts slightly more load on the engine compared to the 3008, but the failure pattern is identical. This is the single most important check before buying any PureTech.

Many 1.2 PureTech engines consume oil at rates far exceeding normal, with some 5008 owners reporting 0.5-1.0 litres per 1,000 km. The root cause is carbon buildup on the piston oil control rings, which prevents them from scraping oil properly. Short trips that prevent the engine from reaching full operating temperature and infrequent oil changes accelerate the problem. High oil consumption also worsens timing belt degradation, since the belt runs in the oil. Mild cases can be managed by checking oil frequently at a cost of approximately 100-200 euros per year in extra oil. Severe cases require piston ring decoking (800-1,200 euros) or engine top-end rebuild (2,500-3,000 euros). Stellantis covers this under the extended 10-year warranty if the vehicle has followed the maintenance schedule with approved oils. Use the correct oil specification (PSA B71 2312, typically 0W-30) and change it at no more than 10,000 km intervals.

The high pressure fuel pump on earlier 1.2 PureTech engines can fail, typically between 60,000-100,000 km. Symptoms include loss of power, rough running, difficulty starting, and the P0087 fault code (fuel rail pressure too low). PSA released an updated pump with revised internals. Replacement at an independent specialist costs 500-700 euros, while Peugeot dealer pricing runs 800-1,200 euros. More common on 2017-2019 production cars. Peugeot has offered goodwill contributions for cars under 6 years or 100,000 km.

Turbo failure on the 1.2 PureTech is typically a secondary consequence of timing belt degradation or oil consumption issues. When belt fragments clog the oil pickup, the turbocharger is among the first components to suffer from reduced lubrication. Symptoms include blue or black exhaust smoke, a whistling noise from the engine bay, and significant power loss. Turbo replacement costs 1,200-2,500 euros depending on whether new or remanufactured parts are used. If the turbo has failed, it is essential to also inspect the entire oil system for belt debris before fitting a replacement, otherwise the new turbo will fail again quickly. Failure usually occurs between 80,000 and 150,000 km on affected engines.

A widely reported issue on 5008s equipped with the panoramic roof, shared with the 3008 on the same platform. Water enters through gaps where the side rails meet the front rail. Symptoms include dripping from the overhead light console or water running from behind the rearview mirror after heavy rain. Multiple forum threads describe owners returning three to four times without permanent resolution. Repair involves removing the headlining, clearing drain tubes, and resealing with mastic. Specialist quotes range from 300-800 euros. Peugeot has offered up to 75% goodwill contributions on some repairs. Cars without panoramic roof are unaffected.

As a direct injection engine, fuel is sprayed into the cylinders rather than over the intake valves. Without this fuel wash effect, carbon deposits accumulate on the intake valve stems. This restricts airflow, causing rough idle, misfires, and progressive power loss. Symptoms typically become noticeable between 60,000 and 100,000 km, though the heavier 5008 driven in urban traffic may develop issues sooner due to lower average engine temperatures. Walnut blasting or chemical cleaning costs 400-800 euros at a specialist. Regular motorway driving at higher rpm helps slow the buildup. This is inherent to all direct-injection petrol engines, not a flaw specific to the PureTech.

Multiple 5008 owners report cascading electrical faults: the infotainment screen freezing mid-drive, spontaneous reboots, Bluetooth disconnections, and phantom warning lights. In many cases the root cause is a failing 12V battery, as the i-Cockpit electronics are sensitive to voltage drops. A new battery costs 80-150 euros fitted. Software updates from Peugeot have resolved several recurring glitches on 2017-2019 builds. If the screen hardware has failed, replacement costs 500-800 euros. Holding the phone button for 10 seconds can force a reboot as a temporary fix. Replacing the 12V battery every 4-5 years and keeping the battery management system in good condition helps prevent phantom fault codes.

The Aisin-sourced 8-speed EAT8 torque converter automatic is generally reliable but some owners report jerky shifts at low speeds, particularly between 1st and 2nd gear in urban traffic. Occasional delayed engagement from standstill and harsh downshifts have been documented. In most cases, a software recalibration at the dealer resolves the issue for 100-300 euros. More serious cases may require valve body replacement at 1,500-2,500 euros. The 6-speed manual gearbox does not have these problems and is considered more reliable. Regular transmission fluid changes every 60,000 km are recommended despite the manufacturer claiming a lifetime fill.