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 .
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 | Refer to vehicle handbook / manufacturer specification | |
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.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
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.
Aftermarket ECU tuning is common on the EENERGY-PHEV platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
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.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.