The Renault F8M 730 is a 1,596 cc, inline‑four naturally aspirated diesel engine produced between 1985 and 1996. It features a SOHC, 8‑valve design with indirect injection via a Bosch mechanical fuel pump. This robust and simple powerplant was engineered for durability and fuel economy in light commercial and passenger vehicles, delivering modest outputs around 42 kW (57 PS) and 100 Nm of torque.
Fitted to models such as the R5, R9, R11, Express, and early Kangoo, the F8M 73…
Production years 1985–1996 predate formal Euro standards; emissions compliance is based on national regulations of the era for registered imports).
The Renault F8M 730 is a 1,596 cc inline‑four naturally aspirated diesel engineered for compact cars and light vans (1985-1996). It combines indirect injection with a simple SOHC valvetrain to deliver dependable, economical performance for low‑stress driving. Designed for pre‑Euro era regulations, it prioritises mechanical simplicity and ease of maintenance over refinement.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,596 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 78.0 mm × 83.5 mm | |
Power output | 42 kW (57 PS) @ 5,000 rpm | |
Torque | 100 Nm @ 2,500 rpm | |
Fuel system | Bosch mechanical indirect injection pump | |
Emissions standard | Pre‑Euro / National Standards | |
Compression ratio | 21.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven camshaft | |
Oil type | Mineral 15W‑40 (API CC/CD) | |
Dry weight | 125 kg |
The Renault F8M 730 was used across Renault's R5/R9/R11 platforms with transverse mounting. This engine received minor platform-specific adaptations-different engine mounts for the Express van-but no major facelift revisions occurred, ensuring broad parts interchangeability. 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.
The F8M 730's primary reliability risk is cylinder head cracking, often triggered by coolant system neglect. While mechanically simple and generally robust, overheating events are a critical failure point. Maintaining the cooling system and addressing leaks immediately is paramount to prevent costly engine damage.
Analysis derived from Renault technical bulletins (1985-1996) and owner club maintenance 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 F8M 730 is renowned for its mechanical simplicity and potential for extreme longevity, often exceeding 300,000 km. Its main Achilles' heel is susceptibility to cylinder head cracking if overheated. With meticulous cooling system maintenance and regular oil changes, it can be a very dependable engine.
The most critical issue is cylinder head cracking between cylinders 2 and 3. Other common problems include Bosch injection pump wear, glow plug failures causing hard starts, and oil leaks from aged rocker cover and sump gaskets. These are well-documented in Renault service literature.
This engine was primarily used in the Renault R5 (Super 5), R9, R11, and Express van from 1985 to 1996. It also saw limited use in the very early first-generation Kangoo models (1997-1998) before being replaced by the F8Q engine.
Significant power tuning is not practical due to its indirect injection and low-compression design. Minor gains can be achieved by ensuring perfect pump timing and clean injectors. Some owners fit a mild performance camshaft, but substantial power increases require forced induction, which is complex and not factory-supported.
Excellent for its era. Expect real-world figures of approximately 5.5-6.5 L/100km (43-51 mpg UK) on mixed driving. Its low power output and focus on economy mean it sips fuel, making it ideal for city and light highway use.
No. The F8M 730 is a non-interference engine. If the timing chain were to break, the pistons and valves will not collide, preventing catastrophic internal damage. This is a significant safety feature for such an old design.
Renault originally specified a mineral 15W-40 oil meeting API CC or CD standards. A good quality 15W-40 diesel mineral or semi-synthetic oil is suitable for older, high-mileage engines. Avoid modern low-viscosity, low-ash oils designed for DPFs.
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.