Peugeot 2008 1.6 BlueHDi Mk1

The DV6 1.6 BlueHDi shares the well-documented turbo vulnerability of the entire 1.6 HDi family. Carbon particles from combustion accumulate in the banjo bolt filter mesh of the turbo oil feed pipe, restricting oil flow to the turbo bearings. This causes overheating and eventual bearing destruction. Contributing factors include extended service intervals, incorrect oil specification, short-trip driving, and leaking injector seals (which introduce combustion gases into the oil). A reconditioned turbo costs 600-800 euros, a new OEM unit 900-1,200 euros, plus 300-500 euros labor. The oil feed pipe and banjo bolt must be replaced simultaneously. PSA introduced a modified banjo bolt (part 0376 60) with improved filtration. One mechanic reported replacing turbos on 6 out of 60 vehicles regularly fitted with this engine. Prevention: use correct low-SAPS oil, change every 10,000-12,000 km (not the maximum 20,000 km interval), and fix injector seal leaks immediately.

The diesel particulate filter requires sustained driving at motorway speed (20+ minutes above 60 km/h) to burn off accumulated soot. Cars used predominantly for short urban trips rarely complete a regeneration cycle. When the filter reaches approximately 45% blockage, the 'risk of DPF clogging' warning appears. If ignored, the car enters limp mode. In cold weather, DPF regeneration starts at engine temperatures of 90-95 degrees Celsius, which may never be reached on short trips. Wet ash deposits solidify into stone-like material that cannot be burned off. A forced regeneration at a workshop costs 150-250 euros. Professional DPF cleaning runs 300-500 euros. If the filter is beyond cleaning, replacement costs 800-1,500 euros. The Eolys cerine additive fluid needs refilling around 120,000 km at approximately 150-250 euros. If DPF regeneration is interrupted mid-cycle, fuel dilution can contaminate the engine oil.

The BlueHDi version uses an AdBlue (urea/SCR) system for NOx reduction, which the earlier HDi and e-HDi variants do not have. The AdBlue injector can crystallize and block, especially in cold weather or when the car sits idle. The pump, built into the AdBlue tank, can fail when its circuit board is contaminated by AdBlue fluid leaking into the sealed electronics zone. Symptoms include the AdBlue warning light and eventually a countdown warning that the engine will not restart. An AdBlue injector replacement costs 300-500 euros. If the entire tank and pump assembly needs replacing, costs rise to 1,200-2,000 euros. The NOx sensor can fail independently at 500-800 euros. The Auto Bild long-term test noted only 167 euros spent on AdBlue refills over 100,000 km, suggesting the system works well when the car is driven regularly. Cars sitting idle or driven infrequently in cold climates are most susceptible to crystallization.

The copper washer seals between the injectors and cylinder head degrade over time, allowing combustion gases to escape. This creates a hissing sound and diesel smell from the engine bay. If left unrepaired, gases deposit a thick black carbon substance around the injectors, known as 'black death', which can damage the cylinder head, wiring harness, and fuel pipes. Injector number 3 is the most commonly affected. Catching it early means a simple seal replacement at around 150-300 euros (parts cost only 3-5 euros per injector, but cleaning labor is 1-2 hours per injector). If black death has progressed significantly, seized injectors may require specialist extraction at 500-1,000 euros. In worst cases, the cylinder head may need reconditioning at 1,500-2,000 euros. Regular oil changes with correct specification oil help prevent accelerated seal degradation.

The exhaust gas recirculation valve accumulates carbon deposits over time, especially in cars driven predominantly in urban conditions. When the valve sticks open or closed, it triggers the 'anti-pollution fault' warning and can cause rough idling, loss of power, and increased fuel consumption. Professional EGR cleaning costs 150-250 euros. If the valve is beyond cleaning, replacement costs 300-600 euros. Always use genuine Valeo or OEM EGR valves, as cheap aftermarket units cause problems on PSA engines. Failure typically occurs between 80,000 and 120,000 km. Regular motorway driving at higher RPM helps keep the valve cleaner. The EGR cooler can also fail separately, causing invisible coolant loss into the exhaust system.

Premature clutch wear has been reported on the 2008 1.6 BlueHDi, with some owners experiencing slipping at under 80,000 km. The dual mass flywheel can develop rattling noises, particularly at idle. A clutch kit alone costs 200-350 euros for parts. If the DMF also needs replacement, combined parts cost rises to 500-800 euros. Labor is approximately 300-500 euros (book time around 9.5 hours). Clutches rarely last beyond 150,000 km with mixed driving. Urban stop-start driving accelerates wear significantly. The DMF is an inspect-and-replace-if-needed item, not a mandatory replacement with every clutch change.

The Peugeot 2008 Mk1 is known for premature front shock absorber wear, with owners reporting knocking noises from as early as 40,000-50,000 km. The raised ride height and relatively soft damper setup contribute to faster wear compared to the lower-sitting 208. The top mount bushes typically fail first. The Auto Bild 100,000 km test also required front shock absorber replacement. Shock absorbers must be replaced in pairs. Parts cost 60-100 euros per damper for quality aftermarket units (Monroe, Sachs), with labor around 1-2 hours per pair. Peugeot has offered goodwill contributions of 50-60% on some vehicles within 4 years of purchase.