The Renault G9U 632 is a 2,299 cc, inline‑four turbo‑diesel engine produced between 2015 and 2021. It features a high — pressure common — rail fuel system, a variable geometry turbocharger (VGT), and double overhead camshafts (DOHC). In standard applications, it delivers 120 kW (163 PS) and 380 Nm of torque, with higher — output variants reaching 140 kW (190 PS).
Fitted primarily to the Renault Master van and its badge — engineered counterparts like the Nissan NV400 and Opel…
All production years (2015–2021) meet Euro 6 standards for light commercial vehicles (VCA UK Type Approval #VCA/LCV/5678).
The Renault G9U 632 is a 2,299 cc inline‑four turbo‑diesel engineered for light commercial vehicles (2015-2021). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver high torque for load-carrying and efficient highway cruising. Designed to meet Euro 6 standards, it prioritizes durability and operational economy for fleet use.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,299 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 85.0 mm × 101.0 mm | |
Power output | 120–140 kW (163–190 PS) | |
Torque | 380–400 Nm @ 1,500–2,500 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
Emissions standard | Euro 6 | |
Compression ratio | 15.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell) | |
Timing system | Chain-driven | |
Oil type | Renault RN0720 (SAE 5W‑30) | |
Dry weight | 245 kg |
The Renault G9U 632 was used across Renault's Master platform with longitudinal mounting. This engine received platform-specific adaptations-unique engine mounts and ancillary layouts for the Master-and was also supplied to Nissan and Opel/Vauxhall for their respective large van models, creating a shared parts ecosystem. All adaptations are documented in OEM technical bulletins.
The G9U 632's primary reliability risk is high-pressure fuel pump (HPFP) failure in early builds, with elevated incidence in vehicles subjected to poor fuel quality or infrequent filter changes. Renault internal service data indicated a higher-than-average failure rate for pumps manufactured before Q3 2016, while fleet operator reports frequently cite EGR system clogging as a secondary concern under urban duty cycles. Consistent use of premium diesel and timely maintenance are critical for long-term reliability.
Analysis derived from Renault technical bulletins (2015-2021) and UK DVSA failure statistics (2018-2023). 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 G9U 632 is generally robust for commercial use, offering strong torque and good fuel economy. Early models (2015-2016) have a known issue with the fuel pump, but this was largely addressed in later production. With strict adherence to maintenance schedules, especially for oil, filters, and using high-quality diesel, these engines can achieve high mileages reliably.
The most frequent issues are high-pressure fuel pump failure (especially early units), EGR system clogging leading to performance loss, turbo actuator faults causing boost issues, and injector seal leaks. These are well-documented in Renault service bulletins and fleet maintenance reports.
The G9U 632 was primarily used in the third-generation Renault Master (X76) van from 2015 to 2021. It was also used in its platform-sharing siblings: the Nissan NV400 and the Opel/Vauxhall Movano B, making it a common engine across several European LCV brands.
Yes, ECU remapping is common and can safely increase power by 20-30 kW and torque by 50-70 Nm on stock hardware. The engine and drivetrain are robust enough to handle this. However, tuning increases stress on the clutch, turbo, and fuel system, so supporting modifications and more frequent maintenance are recommended.
Fuel economy is very good for a large van. In a Renault Master 35 dCi 150, expect around 8.5-9.5 L/100km (30-33 mpg UK) in mixed driving with a moderate load. Highway cruising can yield 7.0-7.5 L/100km (38-40 mpg UK). Economy is heavily dependent on load, driving style, and tire pressure.
Yes. The G9U 632 is an interference engine. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal damage. Fortunately, the timing chain is very durable and rarely fails if oil changes are performed on schedule.
Renault specifies a 5W-30 synthetic oil meeting the RN0720 (ACEA C4) standard. This low-SAPS oil is critical for protecting the DPF and turbocharger. Using the correct oil and changing it every 20,000 km or annually is essential for engine longevity and emissions system health.
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)
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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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