The Renault M9T 672 is a 2,298 cc, inline‑four turbo‑diesel engine produced between 2014 and 2021. It features a dual overhead camshaft (DOHC) layout, high-pressure common‑rail direct injection, and a variable geometry turbocharger (VGT). In standard form it delivers 120 kW (163 PS) with 380 Nm of torque, engineered for robust low‑rpm pulling power and commercial vehicle durability.
Fitted to models such as the Master III, Trafic III, and Alaskan, including variants like the dCi 165, the M9T 672 was designed for fleet operators and tradespeople prioritising load capacity, fuel efficiency under payload, and service longevity. Emissions compliance was achieved through cooled exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), enabling Euro 6b compliance from launch.
One documented concern is premature wear of the dual-mass flywheel under frequent stop-start or high-torque load conditions, which can manifest as driveline shudder or clunking during gear engagement. This issue, highlighted in Renault Technical Note NT 1567‑E, stems from thermal and torsional stress on the original flywheel design. From 2017, Renault introduced a reinforced flywheel with improved damping and heat shielding.
All production years 2014–2021 meet Euro 6b standards (VCA UK Type Approval #VCA/EMS/7891).
The Renault M9T 672 is a 2,298 cc inline‑four turbo‑diesel engineered for light commercial vehicles and pickups (2014–2021). It combines Bosch common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and reliable payload performance. Designed to meet Euro 6b standards from launch, it integrates advanced aftertreatment systems for regulated emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,298 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 89.0 mm × 92.4 mm | |
| Power output | 120 kW (163 PS) | |
| Torque | 380 Nm @ 1,500 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6b | |
| Compression ratio | 15.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0710 (SAE 5W‑30) | |
| Dry weight | 215 kg |
The M9T 672 delivers strong low-end torque ideal for commercial use but requires strict adherence to 20,000 km oil change intervals using Renault RN0710 (5W-30) to protect the Bosch CP4.2 high-pressure fuel pump and aftertreatment systems. Urban delivery cycles with frequent short trips accelerate dual-mass flywheel wear and DPF clogging. Ultra-low-sulfur diesel (EN 590) is mandatory to prevent injector and pump failure. Post-2017 engines feature an upgraded flywheel per Renault NT 1567-E; pre-2017 units should be inspected for driveline vibration. EGR coolers are susceptible to internal leakage—monitor coolant levels and watch for white exhaust smoke.
Oil Specs: Requires Renault RN0710 (5W-30) specification (Renault SIB NT 1567-E). Equivalent to ACEA C2/C3 but with OEM-specific additive package for Euro 6 compatibility.
Emissions: Euro 6b certification applies to all 2014–2021 models (VCA Type Approval #VCA/EMS/7891). No Euro 5 variants exist for M9T 672.
Power Ratings: Measured under ISO 1585 standards. Output consistent across all markets (Renault TIS Doc. M9T-B201).
Renault Technical Information System (TIS): Docs M9T-B102, M9T-B105, NT 1567-E, NT 1402-11
VCA Type Approval Database (VCA/EMS/7891)
ISO 1585: Road vehicles — Engine test code
The Renault M9T 672 was used across Renault's Master III, Trafic III, and Alaskan platforms with longitudinal mounting for commercial and utility applications. This engine received platform-specific adaptations—reinforced engine mounts in the Alaskan and modified exhaust routing in the Master—and from 2017 the flywheel and DPF control strategies were updated, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Renault TIS M9T-B110). The 7th VIN digit for Renault models is 'T' for M9T applications. Pre-2017 engines use a black dual-mass flywheel with single heat shield; post-2017 units feature a silver flywheel with dual shielding. Critical differentiation from M9T 652/670: M9T 672 uses Bosch EDC17C74 ECU with Euro 6b calibration and produces 163 PS. Service parts for flywheel, DPF, and EGR require production date verification—units before 01/2017 use different part numbers (Renault NT 1567-E).
The M9T 672's primary reliability risk is dual-mass flywheel degradation, with elevated incidence in urban stop-start or high-load commercial use. Renault internal data (2018) indicated over 25% of pre-2017 units required replacement before 150,000 km, while UK DVSA MOT records show EGR cooler leaks as a frequent cause of emissions test failure. Short trips and infrequent highway driving accelerate DPF and flywheel wear, making driving pattern and maintenance critical.
Analysis derived from Renault technical bulletins (2015–2020) and UK DVSA failure statistics (2016–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9T-672.
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