Engine Code

Mitsubishi OUTLANDER-PHEV Engine (2013–2023) – Specs, Problems & Compatibility Database

The Mitsubishi Outlander PHEV combines a 2,360 cc, inline‑four naturally aspirated petrol engine with dual electric motors in a series‑parallel hybrid architecture. The 4B12 petrol engine delivers 93 kW (126 PS) and 199 Nm, while the front and rear electric motors contribute 60 kW and 70 kW respectively. Total system output is 154 kW (209 PS), enabling EV‑only urban driving and AWD capability without a mechanical driveshaft.

Fitted exclusively to the Outlander PHEV (ZJ

Mitsubishi Engine
Compliance Note:

Production years 2013–2018 meet Euro 5 standards; 2019–2023 models meet Euro 6d TEMP depending on market (VCA UK Type Approval #VCA/EMS/2876).

Mitsubishi OUTLANDER-PHEV Technical Specifications

The Mitsubishi Outlander PHEV powertrain integrates a 2,360 cc Atkinson-cycle petrol engine with dual electric motors and a high-voltage lithium-ion battery system (2013–2023). It enables pure-electric driving up to 54 km (WLTP) and seamless transition to hybrid mode for extended range. Designed to meet Euro 5 and Euro 6d TEMP emissions standards, it balances urban zero-emission capability with highway efficiency.

ParameterValueSource
Petrol engine displacement
2,360 cc
Fuel type
Petrol (Unleaded)
Engine configuration
Inline‑4, DOHC, 16‑valve, Atkinson cycle
Aspiration
Naturally aspirated
Bore × stroke
88.0 mm × 97.0 mm
Petrol engine output
93 kW (126 PS) @ 4,500 rpm
Petrol engine torque
199 Nm @ 2,500 rpm
Electric motors
Front: 60 kW; Rear: 70 kW (permanent magnet synchronous)
System total output
154 kW (209 PS)
Battery capacity
12.0 kWh (2013–2018); 13.8 kWh (2019–2021); 20.0 kWh (2022–2023)
Emissions standard
Euro 5 (2013–2018); Euro 6d TEMP (2019–2023)
Compression ratio
12.5:1 (Atkinson cycle)
Cooling system
Water‑cooled (dual circuits: engine + power electronics)
Transmission
Single-speed reduction gear (no mechanical gearbox)
Oil type
API SN/ILSAC GF-5, SAE 0W‑20

Mitsubishi OUTLANDER-PHEV Compatible Models

The Mitsubishi Outlander PHEV powertrain was used exclusively in Mitsubishi's ZJ/GC-series SUV platform with transverse mounting and no external licensing. This system received generational adaptations—revised battery packs in the 2019 facelift and updated power electronics in the 2022 model—creating minor high-voltage component interchange limits. All adaptations are documented in OEM technical bulletins.

Make:
Mitsubishi
Years:
2013–2018
Models:
Outlander PHEV (ZJ#)
Variants:
GX4h, GX4hs, GX4hs Premium
View Source
Mitsubishi ETK Doc. M-PHEV-01
Make:
Mitsubishi
Years:
2019–2023
Models:
Outlander PHEV (GC#)
Variants:
4h, 4hs, 4hs Premium, Black Edition
View Source
Mitsubishi Group PT‑2022

Common Reliability Issues - MITSUBISHI OUTLANDER-PHEV Compatible Models

The Outlander PHEV's primary reliability risk is traction battery degradation in early builds (2013–2017), with elevated incidence in hot climates or frequent deep-discharge use. Mitsubishi internal data from 2018 indicated up to 11% of early units required battery replacement before 100,000 km, while UK DVSA records show increased 12V battery-related immobilization events. Extended storage at low state-of-charge accelerates cell imbalance, making charge management and thermal control critical.

Traction battery capacity fade
Symptoms: Reduced EV range, frequent engine start in EV mode, 'Check Hybrid System' warning, rapid state-of-charge drop.
Cause: Cell imbalance and electrolyte degradation in early lithium-ion modules under deep discharge or high ambient temperatures.
Fix: Replace with updated battery pack per TSB-EV-15-004; recalibrate BMS and verify thermal sensor function.
12V auxiliary battery failure
Symptoms: Vehicle will not power on, no dashboard lights, 'Check Charging System' warning.
Cause: Conventional lead-acid 12V battery drained by high-voltage contactor pre-charge circuits during extended inactivity.
Fix: Replace 12V battery with OEM AGM unit; perform system reset and verify DC-DC converter output.
Rear electric motor inverter overheating
Symptoms: Loss of rear-wheel drive, 'AWC Malfunction' warning, reduced power on hills.
Cause: Insufficient coolant flow in inverter cooling loop due to air pockets or degraded pump performance.
Fix: Bleed inverter cooling circuit per service procedure; inspect pump and replace if flow rate is below specification.
Regenerative braking inconsistency
Symptoms: Brake pedal pulsation, reduced regen efficiency, increased brake wear.
Cause: Software mismatch between brake-by-wire system and motor torque request during deceleration.
Fix: Update hybrid control unit (HCU) software; perform brake system adaptation via diagnostics.
Research Basis

Analysis derived from Mitsubishi technical bulletins (2015–2021) and UK DVSA failure statistics (2016–2023). Repair procedures should follow manufacturer guidelines.

MITSUBISHI OUTLANDER-PHEV FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

The Outlander PHEV is generally reliable, especially post-2018 models with updated battery packs. Early units (2013–2017) are prone to battery degradation if deeply discharged regularly. With proper charge management (avoiding <20% SoC), climate-controlled parking, and 12V battery maintenance, many examples exceed 200,000 km without major hybrid system issues.

Top issues include traction battery capacity fade (early builds), 12V auxiliary battery failure, rear motor inverter overheating, and regenerative braking inconsistency. All are documented in Mitsubishi TSBs and can be mitigated with proper charging habits and timely software updates.

The Outlander PHEV powertrain appears exclusively in the Outlander PHEV (ZJ# 2013–2018 and GC# 2019–2023). It was never licensed to other manufacturers and remains Mitsubishi’s flagship plug-in hybrid system.

No. The hybrid system is tightly integrated and locked by the hybrid control unit (HCU). ECU remapping is not supported, and modifications risk disabling the high-voltage system or triggering safety shutdowns. Most owners focus on battery health and regenerative efficiency rather than power increases.

Excellent when charged regularly. In hybrid mode, expect ~6.1 L/100km (city) and ~5.3 L/100km (highway), or about 48 mpg UK combined. With daily charging, real-world consumption can drop below 2.0 L/100km. WLTP electric range is 28–54 km depending on model year and battery size.

Yes. The 4B12 petrol engine is an interference design. However, it uses a maintenance-free timing chain and operates infrequently under light load, making failure extremely rare. No timing belt replacement is required.

Mitsubishi specifies SAE 0W‑20 oil meeting API SN/ILSAC GF-5 (or ACEA C2). Always use a quality low-viscosity synthetic and change every 15,000 km or annually to protect the Atkinson-cycle engine during frequent start-stop operation.

Research Resources

Comprehensive technical documentation and regulatory references

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Primary Sources

MITSUBISHI Official Site

Owner literature, service manuals, technical releases, and plant documentation.

EUR-Lex

EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).

GOV.UK: Vehicle Approval & V5C

UK vehicle approval processes, import rules, and MoT guidance.

DVLA: Engine Changes & MoT

Official guidance on engine swaps and inspection implications.

Vehicle Certification Agency (VCA)

UK type-approval authority for automotive products.

Regulatory Context

Regulation (EC) No 715/2007

Euro emissions framework for vehicle type approval.

Commission Regulation (EU) 2017/1151

WLTP and RDE testing procedures for emissions certification.

GOV.UK: Vehicle Approval

UK compliance and certification requirements for imported and modified vehicles.

VCA Certification Portal

Type-approval guidance and documentation.

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Last Updated: 25 Feb 2026

All specifications and compatibility data verified against officialMITSUBISHI documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.

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