Peugeot 208 P21: common faults & what to check

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The mainstream 1.0/1.2 PureTech petrol engines run a timing belt in oil that breaks up and blocks the oil ways, starving the engine and often destroying it because it is an interference design. Using the wrong oil or stretching service intervals accelerates it. Note the GTi's 1.6 THP uses a chain instead, so this specific fault applies to the ordinary 1.0/1.2 cars.

Where to look: Timing belt in oil at the right-hand end of the engine; sump oil pickup

Parts involved: Timing belt.

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The 208 W2 offered in 1.6 THP GTi 200 trim carries the same EP6 Prince engine timing chain weakness documented in the 207 and 308. The simplex plastic-guided chain stretches from inadequate lubrication during extended oil change intervals or from repeated cold starts with degraded oil. The chain guides fracture first, depositing plastic debris in the sump which can block the oil pickup strainer and cause secondary bearing damage beyond the timing fault itself. Chain stretch produces cam-crank phase errors triggering P0016/P0017 codes. The base 1.2 VTi and 1.2 PureTech engines in the 208 do not share this specific fault — it applies only to the 1.6 THP GTi variant.

Example of the part — not this vehicle

Where to look: Engine timing cover, front-left of engine compartment

Parts involved: Timing chain.

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The 208 GTi's 1.6 THP is the same EP6 Prince engine as other PSA/BMW cars, with a timing chain that stretches early (cold-start rattle, risk of jumping and bending valves) and direct-injection carbon build-up on the inlet valves. Hard-driven GTis can also suffer turbo and high-pressure fuel-pump issues. Service history and a listen for cold rattle matter more than on an ordinary 208.

Example of the part — not this vehicle

Where to look: Timing chain at the passenger-side end of the engine; inlet valves; turbo

Parts involved: Timing chain.

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The 208 W2 uses the PSA PF2 platform with a BSI central electronics module that exhibits the same ground-path resistance sensitivity as the EMP2 cars. Corroded earth connections between the battery negative, engine block and body chassis generate voltage drop that the BSI reads as sensor faults, triggering simultaneous false warnings for ABS, ESP, and the electric power steering system. The 208 W2 EPS module is particularly prone to false faults from elevated earth resistance, occasionally causing the steering to default to maximum-assist mode or log a system fault requiring dealer reset. In documented NZ cases the BSI module has been replaced unnecessarily when the root cause was a corroded chassis earth bolt, costing owners upwards of $1,800 without resolving the fault.

Where to look: Battery earth strap terminal under bonnet, engine block-to-body earth strap at firewall, BSI module under dashboard on driver's side

Parts involved: Steering rack.

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208s built roughly 2013-2017 had a known brake vacuum pump problem that prompted a Peugeot recall in some markets: the pump that provides brake-servo assistance can fail, leaving the pedal hard and much heavier to press, which increases stopping distances. Verify with Peugeot NZ whether the recall was carried out on this specific VIN rather than assuming.

Where to look: Brake vacuum pump on the engine feeding the brake servo

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Front wheel bearings on A9-generation 208 have a documented history of early failure, often presenting before 80,000 km. The bearings are pressed-fit hub assemblies and are sensitive to pothole impacts, which are common on NZ roads. Failed bearings create a pronounced wheel hum and can eventually allow wheel movement, creating a safety risk. NZ grey imports are frequently at the age and mileage where first or second bearing replacement is overdue.

Where to look: Front wheel hubs, both sides

Parts involved: Wheel bearing.