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 s…
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 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.
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.
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The e-Energy PHEV is mechanically robust when maintained properly. Its DOHC 12-valve design and hybrid integration deliver strong performance and efficiency. However, strict adherence to the 150,000 km or 7-year timing belt replacement is essential to prevent engine damage. Battery health depends on charging habits—avoiding full charges and DC fast charging preserves longevity. With regular oil changes and software updates, these systems can exceed 150,000 km.
Key issues include high-voltage battery degradation, timing belt failure if intervals are missed, electric coolant pump failure, and regenerative braking inconsistencies. These are well-documented in Stellantis service bulletins. Using incorrect oil or extended service intervals increases risk of premature turbo and valve train failure. Proper charging practices are critical for battery longevity.
The e-Energy PHEV 225 PS was used in the Citroën C4 (2021–2025) and C5 Aircross (2020–2025). It was also shared with the Peugeot 3008 and DS 7 Crossback. All applications meet Euro 6d emissions standards. The engine is identifiable by its hybrid powertrain and high-voltage cabling. It replaced the older 1.6i naturally aspirated units in performance trims.
Limited tuning potential exists due to hybrid control logic. ECU remaps can increase petrol engine output to around 180 PS safely, but electric motor output is locked by BMS. Combined gains are typically +20–30 PS. Supporting mods like upgraded intercooler and exhaust improve results. Tuning should use reputable firms familiar with hybrid systems to avoid BMS conflicts.
Excellent when charged regularly. In a Citroën C5 Aircross PHEV, expect ~2.0 L/100km (combined hybrid), ~6.8 L/100km (engine-only), or approximately 140 mpg UK when driven in EV mode. Real-world consumption typically ranges from 3.0–4.5 L/100km depending on charging frequency. Its 50 km EV range makes it ideal for urban commuting.
Yes. The petrol engine in the e-Energy PHEV is an interference engine. If the timing belt fails or jumps, the pistons can collide with open valves, causing bent valves or piston damage. This makes strict adherence to the 150,000 km or 7-year replacement interval absolutely critical. Any signs of belt wear or tensioner failure should be addressed immediately.
Stellantis specifies a low-SAPS 5W-30 oil meeting ACEA C3 standards, such as Total Quartz INEO Long Life 5W-30. This protects the turbo, catalytic converter, and hydraulic tappets from ash buildup. Oil must be changed every 15,000 km or 12 months to ensure proper lubrication and prevent sludge-related wear. Using non-C3 oil can lead to turbo and emissions system damage.
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