2.2 DI-D (4N14, PSA-derived)
2015–2020 · diesel · 2268cc · 150hp
Engine codes: 4N14, DW12
Reliability, common problems and owner reviews for the Mitsubishi ASX 2.2 DI-D (4N14, PSA-derived). Check this before you buy used.
The 2.2 DI-D (4N14) is the PSA-derived DW12 diesel — the same family as the Outlander 2.2 and PSA's 2.2 HDi. Torquey and better-matched to the ASX with the AWD/auto drivetrain than the 1.8. Standard modern-diesel cautions apply: DPF and EGR on short trips, plus the usual turbo/injection attention. Strong on a serviced, motorway-driven example; check the DPF history and auto box.
Same engine, other cars
This is the same physical engine (4N14) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
DPF clogs and EGR soots on urban use.
Fix / Workaround: Motorway regens; clean/replace EGR + DPF.
Repair cost: €300–€1200
Typically appears after: 130,000 km
Turbo and injection want clean oil/fuel; wear on neglect.
Fix / Workaround: Oil discipline; injector test; check turbo.
Repair cost: €300–€1400
Typically appears after: 160,000 km
Mileage Thresholds
After 150,000 km: DPF + turbo watch.
Pre-Purchase Checklist
- ☐DPF history (city cars)
- ☐Better-matched than 1.8 for AWD/auto
- ☐Oil + injector history
Frequently asked questions
Is the Mitsubishi ASX 2.2 DI-D (4N14, PSA-derived) reliable?
Maint. Sensitive — The 2.2 DI-D (4N14) is the PSA-derived DW12 diesel — the same family as the Outlander 2.2 and PSA's 2.2 HDi. Torquey and better-matched to the ASX with the AWD/auto drivetrain than the 1.8. Standard modern-diesel cautions apply: DPF and EGR on short trips, plus the usual turbo/injection attention. Strong on a serviced, motorway-driven example; check the DPF history and auto box.
What are the common problems and reviews for the Mitsubishi ASX 2.2 DI-D (4N14, PSA-derived)?
The most commonly reported problems: DPF / EGR (short trips), Turbo / injection.
Is a used Mitsubishi ASX 2.2 DI-D (4N14, PSA-derived) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.