The Renault S8U 762 is a 2,148 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018. It features common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivers 96 kW (130 PS) and 320 Nm of torque, with higher-output variants reaching 120 kW (163 PS) and 380 Nm.
Fitted to models such as the Mégane III, Scénic III, and Koleos, including the dCi 130 and dCi 160 trims, the S8U 762 was engineered for strong low-end torque and motorway refinement. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), enabling Euro 5 compliance across all production years.
One documented concern is high-pressure fuel pump (HPFP) failure, highlighted in Renault Service Bulletin 6012A. This issue stems from inadequate lubrication under low-sulfur diesel conditions and excessive rail pressure demands. From 2013, Renault introduced revised pump internals and updated ECU calibration to mitigate premature wear.
All production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault S8U 762 is a 2,148 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2010–2018). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 5 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,148 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 85.0 mm × 95.0 mm | |
| Power output | 96–120 kW (130–163 PS) | |
| Torque | 320–380 Nm @ 1,750–2,500 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 1,800 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0720 (SAE 5W‑30) | |
| Dry weight | 168 kg |
The VGT turbo provides strong low-RPM torque ideal for mixed driving but requires strict adherence to 15,000 km oil change intervals using Renault RN0720 (5W-30) to prevent HPFP and turbo bearing wear. The Bosch CP4.2 fuel pump is sensitive to fuel contamination and requires ultra-low-sulfur diesel (EN 590) to avoid premature failure. Extended idling or frequent short trips accelerate carbon buildup in the EGR and DPF systems. Post-2013 models feature updated HPFP internals per Renault SIB 6012A; pre-2013 units benefit from ECU recalibration and fuel system inspection.
Oil Specs: Requires Renault RN0720 (5W-30) specification (Renault SIB 6012A). Equivalent to ACEA C3 but with OEM-specific additives.
Emissions: Euro 5 certification applies to all 2010–2018 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. 120 kW output requires EN 590 diesel with sulfur content <10 ppm (Renault TIS Doc. M8U‑2148).
Renault Technical Information System (TIS): Docs M8U‑2148, SIB 6012A
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Renault S8U 762 was used across Renault's Mégane III/Scénic III platforms with transverse mounting and licensed to Nissan for shared CMF platform applications. This engine received platform-specific adaptations—reinforced mounts in the Koleos and revised intake manifolds in the Laguna III—and from 2013 the facelifted Mégane III Phase 2 adopted updated HPFP and ECU calibrations, creating interchange limits. Partnerships allowed Nissan's dCi 160 units to share core architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Renault TIS M8U‑2148). The 7th VIN digit indicates engine family ('U' for S8U series). Pre-2013 models use Bosch CP4.2 pumps with black solenoid caps; post-2013 units have grey caps and updated ECU part numbers. Critical differentiation from M9R: S8U has 4 cylinders and DOHC; M9R is 4-cyl SOHC. Fuel pump and ECU must match production date—pre-2013 pumps are incompatible with post-2013 calibration due to rail pressure strategy changes (Renault SIB 6012A).
The S8U 762's primary reliability risk is high-pressure fuel pump (HPFP) failure on early builds, with elevated incidence in vehicles using inconsistent fuel quality or extended service intervals. Renault internal data from 2014 indicated a notable share of pre-2013 engines requiring HPFP replacement before 100,000 km, while UK DVSA records show EGR/DPF-related MOT failures in high-mileage urban examples. Short-trip driving and poor-quality diesel accelerate pump and emissions system degradation, making fuel quality and service adherence critical.
Analysis derived from Renault technical bulletins (2012–2016) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT S8U-762.
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