Citroën C3 Picasso 1

Strongest variant of the 1.6 HDi (80 kW) with VGT turbocharger and more elaborate exhaust aftertreatment than the lower-output versions. The oil feed line to the turbocharger clogs with soot particles in the oil — regular oil changes every 15,000 km are mandatory. Injector seals and the EGR valve are further typical wear items. DPF is problematic on short trips. On long-distance duty, a punchy and economical everyday diesel.

• !! VNT turbocharger: vanes seized — most common failure from 120,000 km

  On the 109 hp DV6, seized variable VNT vanes clogged by oil sludge is the single most documented failure. PSA has issued a technical service bulletin. Without oil changes every 10,000 km, the damage typically occurs before 150,000 km.

  Symptoms: Sudden limp mode, loss of boost, whistling turbo noise, black smoke, faults P0234/P0299
  900–2,500 $
  Ad turbocharger 1.6 HDi 109PS VTGTurbo DV6C 753420Garrett GT1544V PSA 109PS
• !! Injectors seized — cylinder head damage possible from 140,000 km

  DV6-109 injectors seize in their bores with neglected servicing. Removal requires specialist tools and can take over 10 hours. In extreme cases the threaded bolt shears and the cylinder head must be replaced.

  Symptoms: Smoky cold-start smell, misfires, black soot deposit at injector, knocking noise
  500–3,000 $
  Ad fuel injector 1.6 HDi 109PS Boschfuel injectorgasket DV6Cfuel injector Extraktor PSA 1.6
• !! EGR cooler leaking — coolant ingress from 120,000 km

  The DV6-109 EGR cooler can become porous from thermal shock and let coolant into the intake tract. This leads to white smoke, coolant loss and in the worst case a hydraulic lock in the cylinder.

  Symptoms: White smoke, sweet smell from exhaust, dropping coolant level, coolant smell in cabin
  300–800 $
  Ad EGR radiator 1.6 HDi 109PSEGR radiator DV6C Citroen C4EGR-radiator PSA 1.6 109HP

+ 3 more engine weaknesses + vehicle weaknesses

Mid-range output of the 1.6 HDi (68 kW), the best-selling diesel in many Citroen models. A good compromise between economy and everyday usability. Belt-driven timing, replacement every 240,000 km or 10 years. The turbocharger oil supply is the well-known weak point — oil changes every 15,000 km with the correct specification are essential. EGR valve cokes up in urban driving. Overall a robust everyday engine.

• !! VNT turbo: vanes seized by oil coke from 130,000 km

  The VTG turbocharger's variable vanes seize up due to oil coke deposits. The engine enters limp mode or abruptly loses boost. The cause is almost always spent oil with high soot content after excessively long oil change intervals.

  Symptoms: Sudden power drop, limp mode, whistling noise, black smoke, boost pressure fault P0234
  900–2,200 $
  Ad turbocharger 1.6 HDi 92PS VTGTurbo DV6TED4 756047Leitschaufeln VNT 1.6 HDi
• !! Injectors leaking — oil and fuel contaminate turbo from 120,000 km

  Leaking injectors on the 92 hp variant push fuel into the engine oil; the elevated fuel content in the oil significantly accelerates turbo damage. Detection is difficult since the oil level appears to rise due to fuel entry.

  Symptoms: Strong fuel smell in oil, rising oil level, blue smoke, turbo noises
  300–1,600 $
  Ad fuel injector 1.6 HDi 92PSfuel injectorgasket DV6TED4Common Leiste fuel injector Bosch 1.6 HDi
• !! EGR valve blocked: limp mode and starting difficulties from 100,000 km

  The EGR valve on the DV6-92 tends to block with soot, especially on vehicles with frequent short-trip use. A blocked valve triggers limp mode and prevents restarting after a hot engine shut-off.

  Symptoms: Engine hard to start or stalls after starting, limp mode, engine warning light P0401
  200–500 $
  Ad EGR valve 1.6 HDi 92PSEGR valve DV6TED4EGR valve Citroen C3 1.6 HDi

+ 3 more engine weaknesses + vehicle weaknesses

The EB2 NA (PureTech 82) uses an oil-bathed timing belt which has become the main weakness of this engine family. Fuel contamination of the engine oil through short-trip driving degrades the belt prematurely. PSA shortened the replacement interval multiple times; Stellantis switched to chain drive in successors.

• !! Wet belt disintegration in oil bath (timing belt in oil) from 80,000 km

  The EB2 NA uses an oil-bath timing belt for valve timing. Fuel dilution from short-trip use degrades the oil and attacks the belt — it disintegrates into particles that clog oil galleries and ultimately cause belt snap and engine destruction. PSA reduced the replacement interval to 6 years/100,000 km.

  Symptoms: Sudden engine failure without warning, particles visible in the oil during oil changes, oil pressure warning light, loud engine noises shortly before failure
  300–800 $
  Ad timing belt EB2 PureTech 1.2wet Riemen kit PSA EB2timing belt in oil EB2 NA0816.P4
• !! Fuel entry into engine oil (oil dilution) from 40,000 km

  Under frequent short-trip use, unburnt fuel from the injectors passes down the cylinder walls into the engine oil. The diluted oil loses its lubricating properties and significantly accelerates wet belt deterioration. With over 10% dilution an immediate oil change is required.

  Symptoms: Fuel smell in engine oil, oil level appears to rise (dipstick shows more than filled), declining engine power, foamy or thin oil
  50–200 $
  Ad Kraftstoffeintrag engine oil PureTechoil dilution PureTech 1.2EB2 fuel injectorsoil change PureTech
• !! Oil-bathed timing belt — belt disintegration from 80,000 km

  The naturally aspirated EB2-NA 1.2 VTi also uses an oil-bathed timing belt. Belt particles contaminate the oil and block the oil pump. Stellantis extended the warranty to 10 years/180,000 km.

  Symptoms: Oil pressure warning, belt fragment deposits visible in oil through the oil cap, engine shutdown on belt failure, no audible warning
  300–1,000 $
  Ad timing belt EB2 1.2 VTi NASteuerriemen 1.2 PureTech NAtiming belt kit EB2DT Citroën

+ 3 more engine weaknesses + vehicle weaknesses

Turbocharged variant of the PSA three-cylinder with an oil-bathed timing belt. The belt runs in engine oil and can delaminate prematurely on short trips with long oil change intervals, blocking the oil passages. Stellantis granted an extended warranty of 10 years/175,000 km for affected production years in 2024.

• !! Wet belt deterioration in oil bath from 70,000 km

  Oil-bath timing belt delaminates due to fuel dilution of the oil; stop-start operation of the mild hybrid system adds additional belt stress. Newer Gen 3 engines from 2022 feature a revised design.

  Symptoms: Oil pressure warning light, engine noises, power drop, potential engine damage
  800–1,500 $
  Ad PureTech Mild Hybrid timing beltEB2 48V timing beltNassriemen 1.2 PureTech MH
• !! Elevated oil consumption from coked piston rings from 75,000 km

  Oil scraper rings coke up from short-trip use with direct injection. In extreme cases the engine consumes 3 litres per 1,000 km. Stellantis acknowledged the problem and offers goodwill up to 175,000 km.

  Symptoms: Significantly elevated oil consumption, blue smoke clouds under acceleration, oil warning light
  1,500–3,500 $
  Ad PureTech piston rings 1.2EB2DT piston ring setoil control ring PureTech
• !! Turbocharger failure due to oil pressure problems from 90,000 km

  The turbocharger is sensitive to degraded or fuel-diluted oil. Oil passages clogged by wet-belt particles can destroy the turbo bearings. Frequently a secondary failure following wet-belt problems.

  Symptoms: Whistling turbo noise, blue smoke, power loss, oil pressure loss
  900–2,200 $
  Ad turbocharger PureTech 1.2turbocharger EB2DT1.2 PureTech Turbo Ersatz

+ 4 more engine weaknesses + vehicle weaknesses

The EP3 (8FP) is a chain-driven naturally aspirated engine from the Prince family with variable valve timing. Premature chain tensioner failure was a known production fault (recall until 2011). Oil change intervals must be strictly observed as oil starvation directly threatens the timing chain and camshaft phaser.

• !! Faulty chain tensioner — timing chain jumps from 80,000 km

  EP3 engines up to model year 2011 were affected by a faulty hydraulic chain tensioner. If the chain stretches, valve timing shifts, and with further wear the chain can jump a tooth causing severe engine damage. PSA made several revisions.

  Symptoms: Metallic rattling on cold start, power loss, rough idle, start problems or harsh engine noises in advanced cases
  300–900 $
  Ad chain tensioner EP3timing chain tensioner 8FPtiming chain kit 1.4 VTi PSA0816.R1
• !! Oil consumption from valve stem seals from 90,000 km

  The EP3 is prone to elevated oil consumption from worn valve stem seals, especially on the exhaust valves. Additionally the oil separator in the valve cover gasket can tear and route unfiltered oil into the intake tract.

  Symptoms: Blue smoke at startup or under throttle, frequent oil top-ups needed, oil smell from engine bay, oil in intake manifold
  250–700 $
  Ad valve stem seals EP3valve stem seals 1.4 VTioil separator valve cover PSA
• !! Thermostat housing failure — coolant loss from 80,000 km

  The thermostat housing with integrated coolant temperature sensor on the EP3 1.4 VTi is prone to leaks and sensor faults. Citroën issued a technical solution for affected C3 vehicles involving an additional sensor.

  Symptoms: Coolant level drops without visible leakage, temperature gauge inaccurate, overheating warning, fault codes for coolant temperature
  80–250 $
  Ad thermostat housing EP3 1.4 VTicoolanttemperature sensor EP3Cthermostat 9673003480 Citroën

+ 3 more engine weaknesses + vehicle weaknesses

The EP6 VTi (N12/EP6C) is the naturally aspirated variant of the Prince engine without direct injection, making it less susceptible to intake valve carbon build-up than the THP. The early production chain tensioner issue is known; PSA improved the tensioner from 2012. Regular oil changes every 10,000 km are mandatory.

• !! Timing chain rattle due to tensioner wear from 80,000 km

  Early EP6 VTi engines (pre-2012) suffer from a weak hydraulic chain tensioner that rattles on cold starts. The single-row timing chain stretches when tensioner pressure drops, causing valve timing to shift. PSA documented oil leaks from the chain tensioner between April 2010 and April 2011.

  Symptoms: Rattling or chattering from the timing chain area for several seconds after cold start, occasionally also at operating temperature when oil level is low
  300–900 $
  Ad chain tensioner EP6 VTitiming chain tensioner N12 EP6Ctiming chain kit 1.6 VTi PSA0829.F3
• !! Chain tensioner failure — timing chain rattles from 100,000 km

  The hydraulic chain tensioner on the EP6 VTi is a known weakness at PSA and BMW. The tensioner loses oil pressure when stationary, causing the chain to rattle on cold start and risk jumping a tooth.

  Symptoms: Loud rattling on cold start that disappears after a few seconds, engine check light, camshaft position sensor fault code
  300–900 $
  Ad chain tensioner EP6 VTiSteuerchain tensioner 1.6 VTi PSA BMWchain tensioner 0829.S3
• !! Torn oil separator diaphragm in valve cover from 70,000 km

  The oil separator (PCV diaphragm) in the EP6 valve cover tears and routes unfiltered oil into the intake tract. This leads to elevated oil consumption, coking of the intake valves and visible oil in the intake hose.

  Symptoms: Elevated oil consumption without visible external leak, oil in intake hose, blue smoke after cold start, power loss from contaminated intake valves
  80–300 $
  Ad valve cover EP6 oil separatorPCV diaphragm EP6Cvalve cover gasket 1.6 VTi0249.L1

+ 3 more engine weaknesses + vehicle weaknesses