The Renault M9T 680 is a 2,298 cc, inline‑four turbo‑diesel engine produced between 2011 and 2018. It features a twin‑scroll variable geometry turbocharger (VGT), Bosch common‑rail direct injection (up to 1,800 bar), and a dual overhead camshaft (DOHC) 16‑valve layout. Output is rated at 110 kW (150 PS) with peak torque of 340 Nm, delivering strong low‑rpm pull ideal for commercial and passenger applications.
Fitted to models including the Trafic III, Master III, and Ni…
All production years (2011–2018) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7890).
The Renault M9T 680 is a 2,298 cc inline‑four turbo‑diesel engineered for light-commercial vans and MPVs (2011–2018). It combines Bosch common‑rail injection with a twin‑scroll variable‑geometry turbocharger to deliver strong low‑end torque and long-haul reliability. Designed to meet Euro 5 emissions standards, it balances load-carrying capability with fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,298 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (twin‑scroll VGT) | |
Bore × stroke | 89.0 mm × 92.0 mm | |
Power output | 110 kW (150 PS) | |
Torque | 340 Nm @ 1,500–2,500 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin‑scroll VGT (Garrett or BorgWarner) | |
Timing system | Chain (front‑mounted; durable design) | |
Oil type | Renault RN0720 (ACEA C3, SAE 5W‑30) | |
Dry weight | 192 kg |
The Renault M9T 680 was used across Renault's Trafic III and Master III platforms with transverse mounting and shared with Nissan and Opel/Vauxhall for light-commercial applications in European markets. This engine received platform-specific adaptations—reinforced sump in the Master and revised EGR routing in the Trafic—and from 2015 the facelifted Trafic III adopted updated fuel pump hardware, creating interchange limits. Partnerships allowed Nissan's NV300 and Opel Vivaro to use identical M9T 680 units. All adaptations are documented in OEM technical bulletins.
The M9T 680's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using non-compliant oil or extended service intervals. Renault internal data from 2014 indicated a significant share of pre-2013 pumps failing before 100,000 km, while UK DVSA MOT records show DPF-related emissions faults rising in urban-driven examples. Short-trip driving and poor-quality diesel accelerate pump and EGR degradation, making oil specification and fuel quality critical.
Analysis derived from Renault technical bulletins (2012–2016) and UK DVSA failure statistics (2015–2023). 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 M9T 680 offers strong torque and commercial-grade durability, but pre-2014 models are prone to high-pressure fuel pump failures if not maintained properly. Using Renault RN0720 oil and adhering to 15,000 km service intervals greatly improves longevity. Post-2014 revisions enhanced pump durability, making later examples more robust.
Key issues include Bosch CP4.2 fuel pump failure, EGR cooler coolant leaks (pre-2014), DPF regeneration faults from short trips, and turbo actuator sticking. These are well-documented in Renault Service Bulletin 6014A and DVSA emissions data.
The M9T 680 powered the Trafic III, Master III, Nissan NV300, and Opel/Vauxhall Vivaro B from 2011–2018 in dCi 150/2.3 CDTI 150 variants. It was primarily used in light-commercial vehicles across the Renault-Nissan-Opel alliance.
Yes. Stage 1 ECU remaps typically yield +15–25 kW safely, as the engine internals are robust for commercial use. However, tuning increases stress on the CP4.2 pump and turbo, so supporting upgrades (oil cooler, high-flow fuel filter) are recommended to maintain reliability.
In a Trafic dCi 150, expect ~7.2 L/100km city and ~5.8 L/100km highway, or ~39 mpg UK combined. Real-world mixed driving typically returns 35–42 mpg (UK), depending on load, driving style, and DPF regeneration cycles.
Yes. The M9T series is an interference engine. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain design is generally durable with proper maintenance.
Renault specifies SAE 5W-30 oil meeting RN0720 (ACEA C3) standard. This low-SAPS formulation protects the DPF and ensures adequate lubrication for the high-pressure fuel pump. Never use non-approved oils.
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