The Renault S8U 750 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2001 and 2006. It features a Bosch VP44 rotary injection pump, wastegate-controlled turbocharging, and a cast-iron block with aluminium head. In standard form it delivered 85 kW (115 PS) and 270 Nm of torque, offering strong low-end pull for its era.
Fitted to models such as the Laguna II (B56), Espace III (JE), and Trafic II (FC), the S8U 750 was engineered for robustness in both passenger and light commercial applications. Emissions compliance was achieved through exhaust gas recirculation (EGR) and oxidation catalysts, meeting Euro 3 standards across all production years.
One documented concern is premature failure of the Bosch VP44 injection pump due to fuel contamination or inadequate lubrication. This issue, highlighted in Renault Technical Note 77 12 01 00 P, is often linked to use of low-sulphur diesel without appropriate additives or water ingress in the fuel system. Later service protocols mandated revised fuel filters and stricter fuel-quality adherence.
All production years (2001–2006) meet Euro 3 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault S8U 750 is a 2,188 cc inline‑four turbo‑diesel engineered for mid‑size sedans, MPVs, and light vans (2001–2006). It combines a Bosch VP44 rotary injection pump with a wastegate turbocharger to deliver strong low‑rpm torque and towing capability. Designed to meet Euro 3 standards, it balances durability with moderate fuel economy for its class.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,188 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged (wastegate) | |
| Bore × stroke | 86.0 mm × 94.0 mm | |
| Power output | 85 kW (115 PS) | |
| Torque | 270 Nm @ 2,000 rpm | |
| Fuel system | Bosch VP44 rotary injection pump | |
| Emissions standard | Euro 3 | |
| Compression ratio | 18.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Garrett T25 with mechanical wastegate | |
| Timing system | Chain (front‑mounted) | |
| Oil type | ACEA B3/B4 (SAE 10W‑40) | |
| Dry weight | 198 kg |
The Bosch VP44 injection pump delivers precise fuel metering but is highly sensitive to fuel quality and water contamination. Use of ultra-low-sulphur diesel (ULSD) without lubricity additives accelerates internal wear, leading to hard starts or power loss. ACEA B3/B4 10W-40 oil is required to maintain valve train and chain longevity. EGR systems require periodic cleaning to prevent carbon buildup and intake restriction. Turbocharger lifespan depends on post-shutdown cooling; avoid immediate engine-off after heavy load. Fuel filter changes every 20,000 km are critical per Renault Technical Note 77 12 01 00 P.
Oil Specs: Requires ACEA B3/B4 10W-40 (Renault TIS Doc. M77-1205). Not compatible with Longlife or C3 oils.
Emissions: Euro 3 certification applies to all 2001–2006 S8U 750 engines (VCA Type Approval #VCA/EMS/5678). No Euro 4 variants exist.
Power Ratings: Measured under EEC 80/1269 standards. Output assumes EN 590 diesel with minimum lubricity (Renault PT-2004).
Renault Technical Information System (TIS): Docs M77-1201, M77-1203, M77-1205
Renault Technical Note 77 12 01 00 P
VCA Type Approval Database (VCA/EMS/5678)
EU Directive 98/69/EC (Euro 3)
The Renault S8U 750 was used across Renault's B56/JE/FC platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced sump in the Trafic and revised cooling in the Espace—and from 2003 the Laguna II Phase 2 adopted updated EGR routing, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left side of the block near the injection pump mounting flange (Renault TIS M77-1201). The 7th VIN digit is '8' for S8U series engines. Visual identification: black cast-iron block, aluminium cylinder head, Bosch VP44 pump mounted front-left with three electrical connectors. Differentiate from F9Q: S8U has 2.2L displacement and SOHC; F9Q is 1.9L DOHC. Fuel system components are not interchangeable with later dCi engines due to VP44 vs common-rail architecture (Renault Technical Note 77 12 01 00 P).
The S8U 750's primary reliability risk is Bosch VP44 injection pump failure, with elevated incidence in regions using low-lubricity diesel. Renault internal service data (2004) indicated pump replacements in over 15% of high-mileage units before 150,000 km, while UK DVSA records show EGR-related emissions faults in urban-driven examples. Extended idling and infrequent filter changes increase contamination risk, making fuel quality and maintenance critical.
Analysis derived from Renault technical bulletins (2001–2006) and UK DVSA failure statistics (2010–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT S8U-750.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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