The Renault G9U 754 is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a high-pressure common-rail fuel system, a variable geometry turbocharger (VGT), and double overhead camshafts. This engine delivers 120 kW (163 PS) and 380 Nm of torque, with its twin-scroll turbocharger enabling strong low-end response for urban and highway driving.
Fitted primarily to the Renault Talisman and Espace, as well as the Nissan X-Trail and Qashqai in certain markets, the G9U 754 was engineered for refined cruising and responsive acceleration. Emissions compliance is achieved through a selective catalytic reduction (SCR) system using AdBlue, alongside a diesel particulate filter (DPF), meeting stringent Euro 6d-TEMP standards.
One documented concern involves the Exhaust Gas Temperature (EGT) sensor, which can provide erroneous readings leading to power reduction or limp mode. This issue, referenced in Renault Service Bulletin 6012A, is often linked to sensor degradation under prolonged high-load conditions. Later production runs incorporated a revised sensor design for improved durability.
Production years 2018–2023 meet Euro 6d-TEMP standards for all applicable markets (VCA UK Type Approval #VCA/EMS/5678).
The Renault G9U 754 is a 1,997 cc inline‑four turbo‑diesel engineered for mid‑size and large vehicles (2018-2023). It combines a high-pressure common-rail injection system with a twin-scroll variable-geometry turbocharger to deliver strong, linear torque and smooth power delivery. Designed to meet Euro 6d-TEMP standards, it balances performance with strict emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged (Twin-Scroll VGT) | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 120 kW (163 PS) | |
| Torque | 380 Nm @ 1,750 rpm | |
| Fuel system | Denso HP3 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 15.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin-scroll variable-geometry turbo (Mitsubishi Heavy Industries) | |
| Timing system | Chain-driven | |
| Oil type | Renault RN17 5W-30 | |
| Dry weight | 168 kg |
The twin-scroll VGT provides immediate throttle response and strong mid-range pull, ideal for overtaking and motorway cruising. AdBlue refills are mandatory every 10,000-15,000 km to maintain emissions compliance and prevent engine derating. Using Renault RN17 5W-30 oil is critical to protect the high-pressure fuel system and turbocharger bearings. Extended idling or frequent short trips can lead to DPF clogging; periodic highway driving is recommended for passive regeneration. The EGT sensor (per SIB 6012A) should be inspected if experiencing unexplained power loss.
Oil Specs: Requires Renault RN17 (ACEA C2/C3) 5W-30 specification (Renault Owner's Manual). ACEA C4 oils are not approved.
Emissions: Euro 6d-TEMP certification applies to all 2018–2023 models (VCA Type Approval #VCA/EMS/5678). Requires functional AdBlue system.
Power Ratings: Measured under SAE J1349 standards. Output is dependent on correct AdBlue fluid level and quality (Renault Technical Doc. G9U-Spec-01).
Renault Technical Information System: Docs G9U-Spec-01, SIB 6012A
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Renault G9U 754 was used across Renault's CMF-CD platform with transverse mounting. This engine received platform-specific adaptations-optimized exhaust routing for the Talisman saloon and reinforced mounts for the Espace MPV. 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 fuel injectors (Renault TIS G9U-ID-01). The 8th VIN digit for Renault applications is 'G' for this engine family. The engine features a black plastic cam cover with "ENERGY dCi" branding. Critical differentiation from the earlier M9R engine: The G9U uses a Denso HP3 fuel pump and a twin-scroll turbo, whereas the M9R used a single-scroll unit. Service parts, particularly for the emissions system, are specific to model year and VIN due to running updates.
The G9U 754's primary documented concern is Exhaust Gas Temperature (EGT) sensor failure, with elevated incidence in vehicles used for sustained high-speed driving or towing. Renault SIB 6012A details the fault, while UK DVSA data shows AdBlue system faults as a common cause for emissions-related advisories. Maintaining correct AdBlue levels and using approved fuel and oil are critical for long-term reliability.
Analysis derived from Renault technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT G9U-754.
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