The Citroën e-Energy PHEV is a 1,598 cc, inline-three petrol engine combined with an electric motor to form a plug-in hybrid system produced between 2020 and 2025. It belongs to the Stellantis HYBRID4 platform, featuring a DOHC 12-valve configuration, twin-scroll turbocharging, and multi-point fuel injection. Delivering a combined 165 kW (225 PS), it was engineered for responsive performance and low emissions in urban and mixed driving conditions.
Fitted to models such as the C5 Aircross and C4, the e-Energy PHEV was designed for drivers seeking a balance of electric-only range, strong acceleration, and compliance with low-emission zones. Emissions control was achieved through a three-way catalytic converter, particulate filter (GPF), and high-capacity lithium-ion battery, enabling Euro 6d compliance and up to 50 km (WLTP) of all-electric driving.
One documented characteristic is the use of a timing belt with a 150,000 km or 7-year replacement interval, as specified in Stellantis Service Bulletin 2045. Unlike earlier hybrid systems, the e-Energy PHEV features regenerative braking and intelligent energy management via the e-Shifter transmission, allowing seamless transitions between electric, hybrid, and petrol modes. This reflects Stellantis’ focus on integrated electrification and driver adaptability.
All production years 2020–2025 meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/8501).
The Citroën e-Energy PHEV is a 1,598 cc inline-three turbocharged petrol engine paired with an electric motor, designed for compact and mid-size vehicles (2020–2025). It combines internal combustion and electric propulsion to deliver responsive performance and extended electric-only range. Engineered to meet Euro 6d standards, it balances zero-emission urban driving with long-distance capability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-3, DOHC, 12-valve + Permanent Magnet Synchronous Motor | |
| Aspiration | Turbocharged | |
| Bore × stroke | 85.0 mm × 94.6 mm | |
| Power output | 120 kW (163 PS) petrol + 80 kW (109 PS) electric (combined 165 kW / 225 PS) | |
| Torque | 250 Nm petrol + 320 Nm electric (combined 360 Nm) | |
| Fuel system | Sequential multi-point fuel injection (SMPFI) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 9.2:1 | |
| Cooling system | Dual-circuit water-cooled (engine and power electronics) | |
| Turbocharger | BorgWarner KP35 twin-scroll turbocharger | |
| Timing system | Timing belt (DOHC, front-mounted) | |
| Oil type | Total Quartz INEO Long Life 5W-30 (ACEA C3) | |
| Dry weight | 142 kg (ICE only), 186 kg (complete hybrid system) | |
| Battery capacity | 12.4 kWh (usable) | |
| EV range (WLTP) | 46–50 km |
The e-Energy PHEV provides strong combined torque ideal for city and highway driving but demands adherence to the 150,000 km or 7-year timing belt replacement interval to prevent valve damage. Total Quartz INEO Long Life 5W-30 oil is recommended due to its low-SAPS formulation protecting the turbo and emissions system. The electric motor requires no scheduled maintenance, but the high-voltage battery must remain within 20–80% charge for longevity. Emissions compliance depends on catalytic converter health and GPF condition; a failed cat will trigger fault codes and disable EV mode. Cold starts are minimized by electric drive, though short-trip driving without charging reduces efficiency.
Oil Specs: Requires ACEA C3 specification with low-SAPS (Stellantis SIB 2045). Total Quartz INEO Long Life 5W-30 is OEM-specified.
Emissions: Euro 6d certification applies to all 2020–2025 models (VCA Type Approval #VCA/EMS/8501). No Euro 6c or Euro 7 variants exist for this engine code.
Power Ratings: Measured under ISO 1585 standards. Combined output verified via Stellantis Group PT-2024. Electric motor output requires 12.4 kWh battery state of health >90%.
Stellantis Technical Information System (TIS): Docs HYBRID4-TS1, HYBRID4-TS2, HYBRID4-FI2, SIB 2045
VCA Type Approval Database (VCA/EMS/8501)
ISO 1585: Road vehicles — Test method for the measurement of fuel consumption
The Citroën e-Energy PHEV was used across Citroën's C4/C5 Aircross platforms with transverse mounting and shared with Peugeot and DS under internal Stellantis engineering agreements. This engine received model-specific calibrations-adapted throttle response in the C5 Aircross and revised regenerative braking in the C4-and from 2022 the updated battery management software created service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (Stellantis TIS HYBRID4-TS1). The 8th VIN digit indicates engine type ('P' for PHEV). Pre-2022 models use a silver cam cover; post-2022 units adopted a black finish. Critical differentiation from EP6: e-Energy PHEV has a hybrid powertrain with high-voltage cabling and front-mounted timing belt, while EP6 units are petrol-only engines. Service parts require VIN-based verification—timing belts for pre-2022 models are compatible with all e-Energy PHEV units, but ECU calibrations may require pairing.
The e-Energy PHEV's primary reliability risk is high-voltage battery degradation due to improper charging habits, with elevated incidence in high-mileage applications. Stellantis internal reports from 2024 noted increased battery capacity loss in units exceeding 80,000 km with frequent DC fast charging, while UK DVSA records show hybrid system faults as a leading cause of MOT failure for pre-2026 electrified vehicles. Extended oil change intervals and poor charging practices accelerate wear, making adherence to maintenance schedules critical.
Analysis derived from Stellantis technical bulletins (2020-2025) and UK DVSA failure statistics (2021-2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN EENERGY-PHEV.
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