The Renault G9T 742 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 its primary application, it delivered 110 kW (150 PS) and 340 Nm of torque, offering a balance of efficiency and pulling power for medium-duty commercial use.
Fitted primarily to the Renault Master van and its badge-engineered variants like the Nissan NV400 and Opel/Vauxhall Movano B, the G9T 742 was engineered for dependable daily operation with an emphasis on fuel economy. Emissions compliance for its production run was achieved through a combination of exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), meeting Euro 6 standards.
One documented concern involves potential failures of the Denso HP4 high-pressure fuel pump, particularly in vehicles subjected to inconsistent fuel quality. This issue, referenced in Renault's technical service bulletins, can manifest as hard starting or sudden power loss. Later production runs incorporated revised pump calibration and filtration protocols to mitigate this risk.
Production years 2015–2021 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault G9T 742 is a 2,299 cc inline‑four turbo‑diesel engineered for large commercial vehicles (2015-2021). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver accessible torque for urban and highway driving. Designed to meet Euro 6 standards, it prioritizes operational economy and emissions 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 | Denso HP4 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 | 225 kg |
The engine's torque curve is optimized for load-carrying but demands strict 20,000 km or 12-month service intervals using RN0720 specification oil to protect the turbo and emissions systems. Ultra-low-sulfur diesel (ULSD) meeting EN 590 standards is mandatory to prevent damage to the high-pressure fuel system. DPF regeneration is frequent in stop-start traffic; regular highway driving is recommended. Vehicles built before 2018 may benefit from updated fuel pump software per Renault SIB G9T-03.
Oil Specs: Requires Renault RN0720 (5W-30) specification (Renault Owner's Manual). Compatible with ACEA C4.
Emissions: Euro 6 certification applies to all production years (2015-2021) (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across specified fuel quality (Renault TIS Doc. G9T-005).
Renault Technical Information System (TIS): Docs G9T-001, G9T-005
Renault Service Information Bulletins (SIB): G9T-03
VCA Type Approval Database (VCA/EMS/5678)
The Renault G9T 742 was used exclusively in Renault's large van platform with longitudinal mounting. This engine received platform-specific adaptations for the Master's chassis and cooling system. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the gearbox bellhousing (Renault TIS G9T-002). The 8th VIN digit for Renault Master models typically indicates engine displacement ('3' for 2.3L). Visually, the engine is identifiable by its large, top-mounted intercooler and the Denso HP4 fuel pump located on the rear of the cylinder head. Differentiation from the higher-powered G9T 645 variant is confirmed by the engine code and specific ECU calibration. Service parts for the fuel system are specific to the G9T 742 and not interchangeable with other 2.3L dCi engines.
The G9T 742's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or with neglected filter changes. Renault internal service data indicates this as a leading cause of roadside recovery for this engine variant, while adherence to the RN0720 oil specification is critical for long-term turbocharger health.
Analysis derived from Renault technical bulletins (2015-2021) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT G9T-742.
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Regulation (EC) No 715/2007
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