Peugeot 207 A7

PSA entry-level diesel (1.4L HDi, 50 kW) with common-rail injection and timing chain. Frugal and fundamentally reliable, but with a well-known KP35 turbo issue: the oil feed line to the turbocharger clogs with soot deposits in the oil, and the banjo bolt with its filter screen (037649) blocks up. Injectors seize due to copper seal wear. With regular oil changes and long-distance driving, this engine lasts well.

• !! Injectors seized in the cylinder head from 150,000 km

  The injectors on the DV4 can seize in the injector bore due to carbon deposits and corrosion, making them impossible to remove without destruction. Forced removal risks damage to the cylinder head.

  Symptoms: Increased fuel consumption, rough idle, black or white smoke from exhaust, engine management light, power loss under acceleration
  450–2,200 $
  Ad Siemens VDO fuel injector DV4fuel injector 1.4 HDi9663429280
• !! Turbo failure from clogged oil feed from 130,000 km

  The oil feed line to the KP35 turbo clogs with soot deposits. The banjo bolt with integrated mesh filter (PSA 037649) blocks and cuts off lubrication. The turbo overheats and bearing shells are destroyed.

  Symptoms: Whining noise from turbo, dropping boost pressure, blue smoke from exhaust, engine warning light.
  600–1,800 $
  Ad KP35 54359700009 turbocharger DV40375G9 turbo Peugeot 1.4 HDi037649 banjo bolt oil feed turbo
• !! EGR valve soots up and jams from 100,000 km

  The EGR valve on the DV4 soots up heavily from carbon deposits, particularly during frequent short-trip use. Adaptation after replacement requires PSA diagnostic software (PP2000).

  Symptoms: Engine warning light, noticeable power loss, rough engine under part load, elevated emissions, rough idle, fault codes P0409/P0490/P1459
  250–600 $
  Ad EGR valve 1.4 HDiEGR DV4TD9660276280

+ 5 more engine weaknesses + vehicle weaknesses

The most common PSA diesel (1.6L HDi, 68-85 kW), evolving through many stages from Euro 4 to Euro 6. THE defining problem is the turbocharger: the oil feed line clogs with soot particles and kills the TD025/GT1544V turbo — sometimes as early as 50,000 km. Injector seals, EGR carbon buildup, and DPF issues on short trips are additional trouble spots. With regular oil changes and highway driving, it remains a frugal, long-lasting engine.

• !! Turbocharger total failure from oil sludge from 100,000 km

  The 1.6 HDi is notorious for repeated turbocharger failures. Soot particles in the oil alter viscosity, oil lines coke up and the turbocharger runs dry. A second failure after replacement without addressing the root cause is common.

  Symptoms: Whistling from the turbocharger, severe power loss, blue or black exhaust smoke, oil leaking from turbo, engine enters limp mode
  700–2,500 $
  Ad turbocharger 1.6 HDi 9HZGarrett GT1544V0375J6Turbo Ölzuleitung DV6
• !! Leaking injectors with diesel in the engine oil from 120,000 km

  The copper sealing rings on the injectors wear out, allowing combustion gases and diesel to enter the cylinder head. Oil dilution by diesel can lead to engine damage. Affects all 1.6 HDi variants.

  Symptoms: Diesel smell at the dipstick, rising oil level, black deposits around injectors, rough engine running, hissing noises at the cylinder head with engine running
  300–800 $
  Ad fuel injector Kupferdichtring 1.6 HDifuel injectorgasket DV6fuel injector Hülse 1.6 HDi
• !! Premature camshaft and chain wear from 130,000 km

  The cam-to-cam timing chain between inlet and exhaust camshafts can stretch or snap. Hydraulic chain tensioners fail, causing valve timing shift and in extreme cases engine damage.

  Symptoms: Rattling on cold start, rough engine running, engine management light, power loss, in extreme cases sudden engine shutdown from chain snap
  800–2,500 $
  Ad timing chain DV6camshaft 1.6 HDichain tensioner 9HZ

+ 5 more engine weaknesses + vehicle weaknesses

Compact 1.4-liter naturally aspirated engine (70 kW) from the Prince family — a PSA/BMW joint development. Timing chain instead of a timing belt, but the chain stretches from around 80,000 km when oil changes are neglected. Oil consumption from piston ring wear is the second known weakness. Intake valves develop carbon buildup from oil mist deposits. The plastic thermostat housing cracks. With careful maintenance, a frugal and long-lasting engine.

• !! Timing chain stretch and tensioner failure from 100,000 km

  The Prince engine suffers timing chain stretch from defective tensioners. Rhythmic rattling from the driver's side is a warning sign. A jumped chain risks severe valve damage.

  Symptoms: Rattling/clattering on cold start, rhythmic knocking at idle, power loss, engine management light
  500–1,200 $
  Ad timing chain EP3 Princechain tensioner 1.4 VTitiming chain kit Peugeot 207 1.4
• !! Oil consumption from cylinder bore wear from 120,000 km

  The 1.4 VTi tends towards increased oil consumption from cylinder bore wear. In advanced cases this leads to catalytic converter destruction from oil combustion.

  Symptoms: Rising oil consumption, bluish smoke, exhaust smell, elevated emissions at MoT/TÜV
  200–2,500 $
  Ad piston rings 1.4 VTi EP3catalytic converter Peugeot 207 1.4 VTi
• !! VVT solenoid valve for cam timing failed from 80,000 km

  The solenoid valves for variable cam timing (VVT) fail or get blocked by oil residue. Fault code P0013 or P0014 is stored. The exhaust solenoid is most frequently affected and costs under 50 Euro.

  Symptoms: Engine fault warning, misfires particularly on cold start, power loss going uphill, engine briefly runs on three cylinders after start
  50–300 $
  Ad solenoid valve camshaftnverstellung EP3 VTi 1922V9OCV valve 1.4 VTi Peugeot 207

+ 4 more engine weaknesses + vehicle weaknesses

Turbo version of the Prince engine (1.6L THP 150, 110 kW) — notorious for timing chain problems in early production years (2007-2012). The chain stretches, skips, and causes valve damage. From 2013 onward with an improved chain tensioner, the situation improved significantly. Oil consumption from piston rings and valve carbon buildup are additional classic weak spots. Plan for high-pressure fuel pump and thermostat housing as wear items.

• !! Timing chain stretch — notorious main problem from 80,000 km

  The THP 150 is notorious for timing chain stretch. The hydraulic tensioner and plastic guide rails fail early. A jumped chain risks catastrophic engine damage. The problem particularly affects vehicles produced before 2013.

  Symptoms: Loud rattling/clattering on cold start, rhythmic knocking, power loss, fault codes P0016/P0017, poor cold starting
  700–4,000 $
  Ad timing chain EP6DT THP 150chain tensioner 1.6 THPtiming chain kit Peugeot 308 THPchainnführungsschiene EP6DT
• !! Extreme oil consumption from 80,000 km

  Many THP 150 engines consume alarmingly large amounts of oil from 80,000 km — sometimes 1 litre per 1,500–2,000 km. Causes are worn piston rings, turbocharger shaft seals and a defective crankcase ventilation system.

  Symptoms: Oil level drops rapidly, bluish smoke under acceleration, oil smell, frequent topping up required
  300–5,000 $
  Ad piston rings EP6DT THPPCV valve 1.6 THPcrankcase ventilation EP6DT
• !! Turbocharger failure and wastegate malfunction from 80,000 km

  The twin-scroll turbocharger of the THP 150 develops housing cracks from 60,000–80,000 km. The wastegate can develop leaks and lose the ability to hold boost pressure. Full turbocharger replacement is often required.

  Symptoms: Boost pressure missing, power loss, whistling noise, black/blue smoke, engine management light
  1,800–2,800 $
  Ad turbocharger EP6DT THP 150wastegate 1.6 THPturbocharger Peugeot 308 THP

+ 6 more engine weaknesses + vehicle weaknesses

High-performance THP variant (1.6L, 128-147 kW) for sporty models like the 208 GTi and RCZ. Same timing chain issues as the EP6DT, but here under higher thermal and mechanical load. Turbocharger and high-pressure fuel pump wear faster than on the 150 PS variant. Regular oil changes with 5W-30 every 10,000 km are mandatory. From 2013 onward with improved chain tensioner and redesigned valve cover, reliability improved significantly.

• !! Timing chain stretch under high load from 80,000 km

  The simplex timing chain of the EP6DTS stretches especially quickly under the higher output (175–200 hp). The chain can jump from around 80,000 km — in the worst case causing valve-to-piston contact and catastrophic engine damage.

  Symptoms: Rattling on cold start, rough engine running, engine management light, power loss; if chain jumps: sudden engine shutdown
  1,200–4,500 $
  Ad EP6DTS timing chain kit1.6 THP chain tensionerPSA 0816.H9 timing chain
• !! Excessive oil consumption from coked piston rings from 100,000 km

  Direct-injection-related coking of the oil control rings leads to extreme oil consumption of 1–3 L/1,000 km. The higher thermal load of the EP6DTS means the problem occurs more frequently than on the EP6DT.

  Symptoms: Rapidly dropping oil level between services, blue smoke when revving, oil-fouled spark plugs, oil pressure warning
  2,000–4,000 $
  Ad EP6DTS piston rings1.6 THP oil control ringEP6 piston ringsatz
• !! High-pressure pump (HPFP) loses hydraulic oil from 100,000 km

  The high-pressure pump of the THP 200 is a hydraulic plunger pump with metal bellows. It gradually loses its internal hydraulic oil and fails — typically from 60,000–70,000 miles. Fault code P0087.

  Symptoms: Engine stumbling under load, power loss, starting problems, MIL with P0087, stalling at full throttle
  500–1,200 $
  Ad EP6DTS high-pressure fuel pump1.6 THP high-pressure fuel pumpPSA high-pressure fuel pump 1920LL

+ 5 more engine weaknesses + vehicle weaknesses

1.6-liter naturally aspirated engine (88 kW) from the Prince engine family, a PSA/BMW joint development. The timing chain can stretch from 60,000-80,000 km onward — rattling on cold start is the warning sign. Valve cover gasket and VVT solenoid valves are additional wear points. The VVT actuator filter screens get clogged with old oil residue. With regular oil changes (5W-30, max. 15,000 km intervals) and chain monitoring, a decent daily driver engine.

• !! Timing chain stretch and tensioner failure from 100,000 km

  The EP6 shares the Prince engine's timing chain problem. The hydraulic tensioner fails, the chain stretches and can jump. PSA revised the tensioner several times; significantly improved from 2013.

  Symptoms: Rattling on cold start, rhythmic clattering at idle, power loss, engine management light P0016/P0017
  500–900 $
  Ad timing chain EP6 1.6 VTichain tensioner EP6C Princetiming chain kit Peugeot 308 1.6 VTi
• !! Increased oil consumption from 120,000 km

  The EP6 VTi tends towards oil consumption from cylinder bore wear. Less pronounced than on the THP, but still relevant. Regular oil level checks are mandatory.

  Symptoms: Oil level drops between change intervals, bluish smoke, elevated emissions at MoT/TÜV
  200–2,000 $
  Ad piston rings EP6 1.6 VTivalve stem seal EP6C
• !! Water pump leaking from 100,000 km

  The water pump on the EP6 can develop leaks and in the worst case cause overheating. Coolant loss is often noticed too late. Replacement together with the timing chain makes sense.

  Symptoms: Coolant loss, coolant warning, engine overheats, puddle under the car
  200–500 $
  Ad water pump EP6 1.6 VTiwater pump Peugeot 308 1.6

+ 3 more engine weaknesses + vehicle weaknesses