The Citroën ZMZ, also known as the EB0, is a 998 cc, inline — three petrol engine produced between 2005 and 2012. It features a DOHC 12 — valve configuration with multi — point fuel injection (MPFI), delivering 48 kW (65 PS) and 93 Nm of torque. Its compact dimensions and lightweight construction made it ideal for urban microcars, offering excellent fuel economy and low emissions.
Fitted to models such as the Citroën C1, Peugeot 107, and Toyota Aygo, the ZMZ (EB0) was engineered…
All production years (2005–2012) meet Euro 4 standards .
The Citroën ZMZ (EB0) is a 998 cc inline-three petrol engine engineered for urban microcars (2005–2012). It combines DOHC 12-valve architecture with multi-point fuel injection to deliver responsive low-end performance and exceptional fuel economy. Designed to meet Euro 4 emissions standards, it balances efficiency with city drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 998 cc | |
Fuel type | Petrol | |
Configuration | Inline-3, DOHC, 12-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 73.0 mm × 79.5 mm | |
Power output | 48 kW (65 PS) @ 6,000 rpm | |
Torque | 93 Nm @ 3,000 rpm | |
Fuel system | Bosch ME7.9.1 MPFI | |
Emissions standard | Euro 4 | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing belt (interval: 90,000 km or 6 years) | |
Oil type | SAE 5W-30, API SM | |
Dry weight | 84 kg |
The Citroën ZMZ (EB0) was used across Citroën's C1 platform with transverse mounting and shared within the PSA Group and with Toyota for A-segment applications. This engine received platform-specific adaptations-shorter intake manifolds in the C1 and revised exhaust manifolds in the 107-and featured consistent Euro 4 emissions compliance throughout production. 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 ZMZ delivers excellent fuel economy and simple operation, but early models (2005–2007) had reliability concerns, particularly timing belt wear. Later revisions (post-2008) improved tensioner design, so well-maintained examples can be durable. Regular servicing, timely timing belt replacement, and using high-quality oil (5W-30 API SM) greatly enhance longevity.
The most documented issues are timing belt failure (especially pre-2008), camshaft wear due to deferred maintenance, intake carbon buildup, and catalytic converter clogging. These are well-documented in PSA service bulletins and technical reports. Proper maintenance significantly reduces failure risk.
The ZMZ (EB0) was primarily used in the Citroën C1 (2005–2012). It was also shared with Peugeot 107 and Toyota Aygo as part of the joint A-segment platform. All units are Euro 4 compliant, with post-2008 builds featuring improved timing belt durability.
Limited tuning potential. The DOHC 12V architecture and MPFI system allow modest ECU remapping. Minor gains can be achieved with exhaust upgrades and air intake improvements, but power increases are limited. Over-revving without maintenance increases wear risk and is not recommended.
Excellent. In a Citroën C1 1.0i, typical consumption is ~5.8 L/100km (city) and ~4.3 L/100km (highway), or about 49–65 mpg UK. Real-world figures depend on driving style, but expect 55–60 mpg (UK) on mixed roads for a healthy engine.
Yes. The ZMZ is an interference engine. If the timing belt fails, pistons can contact open valves, causing severe internal damage. Adhering to the 90,000 km or 6-year replacement interval is essential to prevent costly engine repairs.
PSA specifies SAE 5W-30 oil meeting API SM standards. Use a high-quality synthetic oil suitable for small petrol engines. Change oil every 15,000 km or annually to ensure proper lubrication, especially for valve train protection.
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.