The Renault S8U 763 is a 1,995 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a high-pressure common-rail fuel system, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivers 110 kW (150 PS) and 380 Nm of torque, engineered for responsive low-end performance and compliance with Euro 6d TEMP emissions.
Fitted to models such as the Renault Talisman, Espace, and Koleos, the S8U 763 was designed for refined cruising, strong towing capability, and urban efficiency. Emissions compliance was achieved through a combination of cooled exhaust gas recirculation (EGR), a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, meeting Euro 6d TEMP standards across all markets.
One documented concern is premature failure of the high-pressure fuel pump (HPFP), noted in Renault Service Bulletin 77 12 01. This issue is linked to fuel contamination or inadequate lubricity in low-sulfur diesel, leading to internal wear. From mid-2020, Renault implemented revised HPFP seals and updated calibration to mitigate injector and pump stress.
All production years 2018–2023 meet Euro 6d TEMP standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault S8U 763 is a 1,995 cc inline‑four turbo‑diesel engineered for mid‑size and large SUV/sedan applications (2018–2023). It combines Bosch common‑rail injection with a single variable‑geometry turbocharger and AdBlue SCR aftertreatment to deliver strong low‑rpm torque and strict Euro 6d TEMP compliance. Designed for refined daily driving and towing, it balances performance with stringent emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Diesel (EN 590 ULSD) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 380 Nm @ 1,750–2,750 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,500 bar) | |
| Emissions standard | Euro 6d TEMP | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0720 (ACEA C2/C3, SAE 5W‑30) | |
| Dry weight | 168 kg |
The S8U 763 delivers smooth torque and refined operation but requires strict use of EN 590 ultra-low-sulfur diesel (ULSD) to protect the Bosch CP4.2 high-pressure fuel pump. Renault RN0720 (5W-30) oil is mandatory to maintain DPF/SCR compatibility and prevent aftertreatment clogging. Extended idling or short urban trips increase DPF regeneration frequency and AdBlue consumption. HPFP failures—linked to fuel lubricity—are mitigated by post-2020 pump revisions per Renault SIB 77 12 01. Timing chain durability is generally robust, but oil degradation accelerates wear; 20,000 km service intervals are critical.
Oil Specs: Requires Renault RN0720 (5W-30), ACEA C2/C3 compliant (Renault SIB 77 12 01). Not interchangeable with older RN0700.
Emissions: Euro 6d TEMP certification applies to all 2018–2023 models (VCA Type Approval #VCA/EMS/5678). No market exceptions.
Power Ratings: Measured under UN ECE R85. Output stable only with EN 590 diesel and OEM AdBlue (Renault TIS Doc. M8U‑763‑C).
Renault Technical Information System (TIS): Docs M8U‑763‑A, M8U‑763‑B, SIB 77 12 01
VCA Type Approval Database (VCA/EMS/5678)
EU Regulation (EU) 2017/1151 – WLTP and RDE testing
The Renault S8U 763 was used across Renault's CMF-CD and CMF-EV platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the Espace and modified exhaust routing in the Koleos—and from 2020 the Talisman facelift adopted updated ECU calibration for improved cold-start emissions, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the alternator bracket (Renault TIS M8U‑763‑E). The 7th and 8th VIN digits identify engine family ('8U' for S8U series). All S8U 763 units feature a black plastic valve cover with 'dCi 150' branding and a visible AdBlue tank (17L) under the spare wheel. Critical differentiation from earlier M9R: S8U uses Bosch EDC17C74 ECU with OBD2 port under dash and SCR catalyst downstream of DPF. Pre-2020 HPFP units (Bosch 0445020125) differ from post-2020 (0445020257) in seal design—interchange not advised per Renault SIB 77 12 01.
The S8U 763's primary reliability risk is high-pressure fuel pump (HPFP) wear, with elevated incidence in regions with marginal diesel quality. Renault internal field data (2021) indicated a measurable uptick in HPFP replacements before 80,000 km in non-EN 590 fuel zones, while UK DVSA records show SCR/AdBlue system faults as the second-most common emissions-related MOT defect. Short-trip driving and fuel contamination make strict adherence to OEM oil and fuel specs critical.
Analysis derived from Renault technical bulletins (2018–2023) and UK DVSA failure statistics (2019–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT S8U-763.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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