The Renault G9U 720 is a 2,299 cc, inline‑four turbo‑diesel engine produced between 2015 and 2020. It features common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). This engine was designed to offer a blend of high torque output and improved fuel efficiency for Renault's larger vehicles and commercial applications.
Fitted primarily to the Renault Master van and its badge — engineered counterparts like the Nissan NV4…
Production years 2015–2020 meet Euro 6 standards as per EU Regulation (EC) No 715/2007 and subsequent amendments.
The Renault G9U 720 is a 2,299 cc inline‑four turbo‑diesel engineered for light commercial vehicles (2015-2020). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver high torque for load carrying and towing. Designed to meet Euro 6 emissions standards, it balances commercial utility with regulatory compliance.
| 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 | 110 kW (150 PS) | |
Torque | 340 Nm @ 1,500 rpm | |
Fuel system | Bosch CP4 common‑rail (up to 1,800 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 | 220 kg |
The Renault G9U 720 was used primarily in Renault's Master platform with longitudinal mounting. This engine received specific adaptations for the commercial vehicle environment, including reinforced ancillaries and a specific exhaust aftertreatment layout. All adaptations are documented in OEM technical bulletins.
The G9U 720's primary reliability focus is on its high-pressure fuel system and emissions aftertreatment. Renault service data indicates the CP4 fuel pump and DPF are the most frequent sources of major repair. Vehicles used for predominantly short urban trips are at higher risk for DPF-related issues, while those using poor-quality fuel face elevated fuel system failure rates.
Analysis derived from Renault technical bulletins (2015-2020) and EU regulatory compliance data. Repair procedures should follow manufacturer guidelines.
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The G9U 720 is generally robust for commercial use when maintained correctly. Its main long-term risks are the CP4 fuel pump and DPF system. Adhering strictly to service schedules, using the correct oil and high-quality diesel, and ensuring the DPF regenerates properly are key to achieving high mileage without major issues.
The most frequent issues are failures of the Bosch CP4 high-pressure fuel pump, clogging of the Diesel Particulate Filter (DPF), faults in the AdBlue injection system, and carbon buildup in the EGR valve and cooler. These are well-documented in Renault service information.
The G9U 720 engine was used almost exclusively in the third-generation Renault Master (Phase 2, 2015-2020) van, badged as the dCi 150. It was also used in its platform-sharing siblings: the Nissan NV400 and the Opel/Vauxhall Movano B.
Yes, ECU remapping is common and can yield significant power and torque gains. However, increasing output puts additional stress on the CP4 fuel pump and turbocharger. A stage 1 remap is generally considered safe, but supporting modifications like an upgraded intercooler are recommended for higher stages to ensure reliability.
Fuel economy varies greatly based on vehicle weight, load, and driving conditions. In a Renault Master panel van, expect figures between 8.5 - 11.0 L/100km (26 - 33 mpg UK) for mixed driving. Highway cruising can yield better results, while constant urban stop-start driving will be less efficient.
Yes. Like virtually all modern diesel engines, the G9U 720 is an interference design. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the timing chain is very durable on this engine.
Renault mandates the use of RN0720 specification oil, typically a 5W-30 synthetic low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oil. This is crucial for protecting the emissions aftertreatment systems (DPF, SCR). Using the wrong oil can lead to rapid DPF clogging and system failure.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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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