2.0 / 2.4 petrol (4B11 / 4B12)
2007–2012 · petrol · 2360cc · 170hp
Engine codes: 4B11, 4B12
Reliability, common problems and owner reviews for the Mitsubishi Outlander 2.0 / 2.4 petrol (4B11 / 4B12). Check this before you buy used.
The MIVEC petrols are reasonably tough, but the Outlander has two specific, well-known faults to check: the crankshaft seal can split and spray oil onto the clutch/flywheel (causing clutch slip), and there are reports of balance-shaft failures that are expensive (~£3,000) and have recurred even after repair. A leaking water pump (coolant on the passenger side) is also common.
Known Issues
The crankshaft seal splits and sprays oil over the clutch and flywheel, contaminating the clutch → slipping. A common, specific Outlander fault.
Fix / Workaround: Replace crank seal + clutch together once contaminated.
Repair cost: €600–€1400
Typically appears after: 120,000 km
Major balance-shaft faults reported, costing ~£3,000 and recurring even after replacement in some cases.
Fix / Workaround: Listen for abnormal vibration/noise; budget heavily if affected.
Repair cost: €1500–€3000
Typically appears after: 150,000 km
Coolant leak on the passenger side from a failing water pump.
Fix / Workaround: Replace water pump.
Repair cost: €200–€500
Mileage Thresholds
After 120,000 km: Crank seal / clutch contamination window.
Pre-Purchase Checklist
- ☐Test drive for clutch slip (crank-seal oil contamination)
- ☐Listen for balance-shaft vibration/noise
- ☐Check passenger side for coolant leak
Frequently asked questions
Is the Mitsubishi Outlander 2.0 / 2.4 petrol (4B11 / 4B12) reliable?
Maint. Sensitive — The MIVEC petrols are reasonably tough, but the Outlander has two specific, well-known faults to check: the crankshaft seal can split and spray oil onto the clutch/flywheel (causing clutch slip), and there are reports of balance-shaft failures that are expensive (~£3,000) and have recurred even after repair. A leaking water pump (coolant on the passenger side) is also common.
What are the common problems and reviews for the Mitsubishi Outlander 2.0 / 2.4 petrol (4B11 / 4B12)?
The most commonly reported problems: Crankshaft seal split → clutch slip, Balance shaft failure, Water pump leak.
Is a used Mitsubishi Outlander 2.0 / 2.4 petrol (4B11 / 4B12) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.