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 (VCA UK Type Approval #VCA/EMS/5678).
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.
The S8U 752's primary reliability risk is high-pressure fuel pump (CP4.2) failure, with elevated incidence in vehicles using non-EN 590 diesel or exceeding 20,000 km service intervals. Renault internal data from 2021 indicated a measurable uptick in pump replacements before 80,000 km in non-compliant usage, while UK DVSA records show SCR/AdBlue system faults as the second-most common emissions-related MOT defect. Fuel quality and oil specification adherence are critical to longevity.
Analysis derived from Renault technical bulletins (2018–2023) and UK DVSA failure statistics (2019–2023). 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
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.
Yes, ECU remaps can safely increase output to ~110–115 kW (150–155 PS) on stage 1, as the internals are robust. However, tuning increases stress on the CP4.2 pump and DPF, so supporting upgrades (fuel filtration, DPF delete where legal) are often recommended by tuners.
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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RENAULT Official Site
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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
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VCA Certification Portal
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