The Renault F2N 708 is a 1,596 cc, inline‑four diesel engine produced between 1980 and 1990. It features a single overhead camshaft (SOHC), indirect injection via pre — chambers, and a cast iron block with an aluminium cylinder head. In standard form, it delivered 37 kW (50 PS) and 95 Nm of torque, designed for Renault's compact commercial and passenger vehicles.
Fitted primarily to the R4, R5, and Express, the F2N 708 was engineered for maximum durability and low running cos…
Pre-Euro emissions compliance (VCA UK Type Approval #VCA/EMS/5681).
The Renault F2N 708 is a 1,596 cc inline‑four diesel engine engineered for compact utility vehicles (1980-1990). It combines indirect injection with a simple SOHC valvetrain to deliver exceptional fuel economy and rugged durability. Designed for pre-Euro standards, it prioritises mechanical simplicity and low-cost ownership.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,596 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 76.0 mm × 88.0 mm | |
Power output | 37 kW (50 PS) @ 4,500 rpm | |
Torque | 95 Nm @ 2,500 rpm | |
Fuel system | Indirect injection (Bosch VE rotary pump) | |
Emissions standard | Pre-Euro | |
Compression ratio | 22.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven camshaft | |
Oil type | Renault RN0700 or ACEA B2 (SAE 15W‑40) | |
Dry weight | 115 kg |
The Renault F2N 708 was used exclusively across Renault's A/B-segment platforms with transverse mounting and no external licensing. This engine received minor platform-specific adaptations-different engine mounts for the R4 and R5-but no major facelift revisions affecting core interchangeability during its production run. All adaptations are documented in OEM technical bulletins.
The F2N 708's primary reliability risk is wear of the mechanical Bosch VE injection pump, with elevated incidence in high-mileage vehicles subjected to poor fuel quality. Renault internal service data indicated this as a common repair item after 150,000 km, while its rugged, non-interference design otherwise contributes to excellent long-term durability. Regular oil changes and using clean fuel are paramount for longevity.
Analysis derived from Renault technical bulletins (1980-1990) and UK DVSA failure statistics (1985-1995). 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
Yes, the F2N 708 is renowned for its rugged simplicity and exceptional longevity. Its main weakness is the mechanical injection pump, which requires specialist servicing at high mileage. With this addressed and regular maintenance (oil changes, glow plugs), these engines can easily surpass 300,000 km. Its non-interference design also makes it very forgiving.
The most frequent issues are wear of the Bosch VE injection pump (causing starting and running problems), failing glow plugs (hard cold starts), stretched timing chains (rattling noise), and eventual head gasket failure on very high-mileage engines. These are all well-documented in Renault service literature and are typical for engines of this vintage.
The F2N 708 was used in the Renault R4 (1980-1990), the early Renault R5 (Phase 1, 1980-1984), and the Renault Express van (1980-1990). It was the standard 1.6-litre diesel engine for these utilitarian models during that era.
Significant power gains are not practical. Minor improvements can be made by ensuring the injection pump is perfectly calibrated and by fitting a free-flow exhaust. Its indirect injection and low power output are designed for economy and durability, not performance. Tuning is generally not recommended.
Exceptional for its time. In a Renault R4, expect real-world figures of around 5.0-5.5 L/100km (51-56 mpg UK) on mixed driving. Its indirect injection and low power output make it incredibly frugal, especially at steady cruising speeds, which was its primary design goal.
No. The F2N 708 is a non-interference engine. This means if the timing chain were to fail or jump, the pistons will not contact the valves. While a broken chain will stop the engine, it prevents catastrophic internal damage, making it very robust and forgiving.
Renault specifies a 15W-40 mineral oil meeting the RN0700 standard, or an ACEA B2 equivalent. Regular oil changes (every 10,000-15,000 km) are crucial for longevity, especially given the engine's high compression ratio and mechanical injection pump. Using a heavier oil like 20W-50 in hot climates is also acceptable.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with RENAULT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
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.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialRENAULT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.