The Renault S8U 752 is a 1,749 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. 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 300 Nm of torque, engineered for responsive low‑rpm performance and compliance with Euro 6d TEMP emissions.
Fitted to models such as the Kadjar, Captur, and Mégane IV—including the dCi 130 variants—the S8U 752…
All production years 2018–2023 meet Euro 6d TEMP (RDE Step 1) standards .
The Renault S8U 752 is a 1,749 cc inline‑four turbo‑diesel engineered for compact and crossover models (2018–2023). 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 6d TEMP (RDE Step 1), it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,749 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 80.0 mm × 87.5 mm | |
Power output | 96 kW (130 PS) | |
Torque | 300 Nm @ 1,750 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
Emissions standard | Euro 6d TEMP (RDE Step 1) | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell) | |
Timing system | Chain (front‑mounted) | |
Oil type | Renault RN0720 (SAE 5W‑30) | |
Dry weight | 148 kg |
The Renault S8U 752 was used across Renault's CMF-CD platform with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the Kadjar and revised intake routing in the Captur II—and from 2020 the Mégane IV facelift adopted updated fuel system components, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The S8U 752 offers good efficiency and drivability, but early units (2018–2020) had high-pressure fuel pump reliability concerns. Post-2020 revisions improved durability. Longevity heavily depends on using EN 590 diesel, adhering to 20,000 km oil changes with RN0720 oil, and completing regular DPF regenerations.
Top issues include CP4.2 high-pressure fuel pump failure, AdBlue/SCR system faults, DPF regeneration problems, and VGT turbo actuator sticking. These are documented in Renault service bulletins and correlate with DVSA MOT failure data for Euro 6 diesels.
The S8U 752 powers the Kadjar (2018–2023), Mégane IV (2018–2023), and Captur II (2019–2023), all in dCi 130 form. It is exclusive to Renault and not shared with Nissan or other alliance brands in this configuration.
Aftermarket ECU tuning is common on the S8U-752 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Official WLTP combined figures range from 4.8–5.2 L/100km (55–59 mpg UK). Real-world mixed driving typically yields 5.0–6.0 L/100km (47–56 mpg UK), depending on model, driving style, and AdBlue/DPF activity cycles.
Yes. The S8U 752 is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic internal damage. However, the front-mounted chain design is generally robust with proper maintenance.
Renault specifies RN0720-compliant 5W-30 low-SAPS synthetic oil. This is critical for DPF/SCR compatibility and fuel pump protection. Change intervals should not exceed 20,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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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.
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