Mitsubishi ASX GA

PSA-Renault diesel engine (R9M/DV6) in the ASX facelift. Compact 1.6-litre diesel with 84 kW. Known DPF problems with short-trip use, EGR valve prone to fouling. Replace timing belt every 100,000 km.

• !! DPF clogging (short-trip use) from 100,000 km

  The diesel particulate filter on the 9HD/R9M clogs with predominantly short-trip use. This engine is not suited to SUV operation in urban traffic. Regeneration requires at least 30 minutes of motorway driving.

  Symptoms: DPF warning light, power loss, unusually high oil level (fuel dilution), smoke from exhaust
  600–2,200 $
  Ad particulate filter 9HD ASXDPF 1.6 DI-D ASXDieselparticulate filter R9M Mitsubishi
• !! Timing belt failure from 100,000 km

  The R9M/9HD uses a timing belt drive with a 100,000 km or 6-year replacement interval. Exceeding it risks engine damage. Replace water pump, tensioner, and idler rollers at the same time.

  Symptoms: Engine cranks without firing, loud metallic noise, engine damage
  400–1,500 $
  Ad timing belt 9HD ASXtiming belt kit 1.6 DI-D ASXtiming belt R9M Mitsubishi
• !! EGR valve fouling from 90,000 km

  The EGR valve on the R9M 1.6 DI-D cokes up with typical urban stop-and-go use. The ASX with frequent start-stop operation is particularly vulnerable. Cleaning costs 100–300 EUR, replacement 200–500 EUR.

  Symptoms: Limp mode, power loss, check engine light, stumbling under acceleration
  100–500 $
  Ad EGR valve 9HD ASXEGR valve 1.6 DI-D ASXEGR R9M Mitsubishi ASX

+ 1 more engine weaknesses + vehicle weaknesses

Compact 1.8L diesel for the ASX and Outlander II. Economical but prone to DPF problems with short-trip use and oil dilution from DPF regeneration. EGR fouling is a recurring topic.

• !! Oil dilution from DPF regeneration from 80,000 km

  During DPF regeneration diesel fuel enters the engine oil. Oil level rises instead of dropping. Diluted oil loses its lubricating properties. Early model years particularly affected; Mitsubishi revised the software later.

  Symptoms: Oil level rises above maximum, engine oil smells of diesel, DPF warning light, increased engine noise
  200–800 $
  Ad Ölverdünnung 4N13 ASXDPF Regeneration Mitsubishi ASX 1.8
• !! Injectors failed from 140,000 km

  Common-rail injectors clog or lose sealing at higher mileages. Return-flow rate increases, leading to starting problems and rough running.

  Symptoms: Difficult cold start, rough idle, power loss, check engine light
  600–2,800 $
  Ad fuel injector 4N13 ASXfuel injector Mitsubishi ASX 1.8 DIDCommon Rail fuel injector 4N13
• !! Turbocharger failed from 160,000 km

  The turbocharger loses performance through blocked oil lines or bearing wear. Oil lines clogged by DPF-related oil dilution accelerate wear further.

  Symptoms: Whistling from turbo, power loss, blue smoke, oil in the charge air pipe
  800–2,200 $
  Ad turbocharger 4N13Turbo ASX 1.8 DIDturbocharger Mitsubishi ASX Diesel

+ 2 more engine weaknesses + vehicle weaknesses

Strong 2.2-litre diesel with common-rail injection. Good torque for SUV use, but EGR and DPF are maintenance-intensive. Timing chain instead of belt.

• !! Piezo injectors failed from 150,000 km

  Piezo common-rail injectors are sensitive to fuel quality. Removing and refitting all 4 injectors costs around 500 EUR in labour plus 700 EUR per failed injector for Bosch reconditioning.

  Symptoms: Rough idle, stumbling under acceleration, overconsumption, starting difficulties
  700–3,300 $
  Ad fuel injector 4N14Piezo fuel injector ASX 2.2 DIDCommon Rail fuel injector Outlander 2.2
• !! Oil dilution from DPF regeneration from 80,000 km

  Diesel fuel enters the engine oil during DPF post-injection. Oil level can rise rapidly (up to 1 litre per 1,000 km). Diluted oil loses its lubricating properties and endangers the engine.

  Symptoms: Engine oil smells strongly of diesel, oil level rises instead of dropping, increased engine noise
  200–800 $
  Ad Ölverdünnung 4N14DPF Regeneration Kraftstoff Öl Outlander
• !! EGR valve and intake tract blocked from 100,000 km

  The EGR valve and intake swirl flaps block with soot deposits from the exhaust system. Short-trip driving accelerates the process considerably.

  Symptoms: Check engine light, power loss, rough idle, increased fuel consumption
  250–800 $
  Ad EGR valve 4N14EGR valve ASX 2.2 DIDintake manifold Mitsubishi 2.2 Diesel

+ 1 more engine weaknesses + vehicle weaknesses

Solid 4-cylinder naturally aspirated engine with port injection and MIVEC variable valve timing. No turbo, no direct injection — mechanically simple and long-lived. Known weaknesses are oil leaks at the intake manifold and a KBA recall for piston rings on 2011/2012 vehicles.

• !! Recall: piston ring deposits

  KBA recall for ASX models from 2011 and 2012: deposits and sticking on the piston rings lead to loud, rough engine operation and power loss.

  0–0 $
• !! Elevated oil consumption from worn piston rings from 120,000 km

  Worn piston rings and failed valve stem seals cause creeping oil consumption. Particularly on vehicles above 100,000 km with neglected maintenance. Threshold: above 300 ml per 1,000 km.

  Symptoms: Blue smoke from exhaust especially on cold start or overrun, rising oil consumption, faint engine oil smell
  600–2,000 $
  Ad piston ringsatz 4A92piston ring ASX 1.6 MIVECvalve stem seal 4A92
• ! Oil leak at the intake manifold from 95,000 km

  The gasket between the intake manifold and cylinder head frequently develops oil leaks. The gasket hardens and loses elasticity. Typically occurs in the 80,000–120,000 km range.

  Symptoms: Oil trail on the engine block below the intake manifold, oil smell in the engine bay, dropping oil level
  100–300 $
  Ad gasket intake manifold 4A92Einlassgasket ASX 1.6intake manifold seal kit Mitsubishi

+ 1 more engine weaknesses + vehicle weaknesses

Versatile 2.0-litre DOHC MIVEC with timing chain. Reliable as a naturally aspirated unit in the Outlander and ASX. Monitor oil consumption at high mileage.

• !! Timing chain elongation from 160,000 km

  The timing chain tends to stretch with neglected oil changes. The engine control unit monitors chain position and logs a fault when wear becomes excessive.

  Symptoms: Check engine light, rattling from the timing cover on cold start, fault code in the ECU
  400–1,200 $
  Ad timing chain 4B11timing chain Outlander 2.0 MIVECtiming chain kit 4B11
• !! Piston ring wear and oil consumption from 150,000 km

  Piston rings wear prematurely with hard driving or extended oil change intervals. Crumbling piston ring fragments can scratch cylinder walls.

  Symptoms: Blue-grey smoke from exhaust on cold start and under load, elevated oil consumption
  800–2,500 $
  Ad piston rings 4B11pisto kit 4B11 Outlander
• ! Valve clearance adjustment neglected from 100,000 km

  Mitsubishi specifies a valve clearance inspection every 100,000 km. Workshops frequently skip this, leading to increased wear on camshafts and bucket tappets.

  Symptoms: Ticking from the valvetrain, increased fuel consumption, slight power loss
  150–500 $
  Ad bucket tappet 4B11valvespiel Outlander 2.0camshaft 4B11

Robust 2.0-litre MIVEC naturally aspirated engine without direct injection and without a turbo — both significantly reduce failure risk. The timing chain is prone to stretch with neglected oil changes. Replace spark plugs per manufacturer specification (90,000 km at the latest).

• !! Timing chain stretch and rattle from 140,000 km

  The 4J11 belongs to the same engine family as the 4B12 and 4B40 — all three are recognised timing chain problem cases at Mitsubishi. Chain stretch occurs with long oil change intervals and can lead to engine damage.

  Symptoms: Rattling or ticking from the engine on cold start, settling after warm-up; unstable idle; fault codes in the engine management system
  800–1,300 $
  Ad timing chain 4J11Steuerchain tensioner Mitsubishi 2.0 MIVECtiming chain kit ASX 2.0
• ! Spark plug wear causes cold-start problems from 90,000 km

  The 4J11 is sensitive to worn spark plugs. If plugs are not replaced by 90,000 km at the latest, cold-start problems and rough idle develop.

  Symptoms: Difficult cold start especially below 5°C, rough idle after start, slight hesitation on pull-away
  60–180 $
  Ad spark plugs 4J11spark plug Mitsubishi ASX 2.0 MIVECNGK spark plug 4J11
• ! Valve stem seals leaking at high mileage from 170,000 km

  MIVEC naturally aspirated engines develop leaking valve stem seals at higher mileages, causing oil consumption and blue smoke. The 4J11 is also affected.

  Symptoms: Blue smoke especially on throttle application after prolonged idle or on cold start, dropping oil level, oil smell inside through ventilation
  350–800 $
  Ad valve stem seals 4J11valve stem seal Mitsubishi 2.0 MIVECseal kit cylinder head 4J11