The Vauxhall M9T 676 is a 2,298 cc, inline‑four turbo‑diesel engine produced between 2015 and 2023. It features a high — pressure common‑rail fuel system, variable geometry turbocharger (VGT), dual overhead camshafts (DOHC), and an aluminium block with cast‑iron liners. In standard form it delivers 120 kW (163 PS) and 380 Nm of torque, with strong low‑rpm responsiveness ideal for light commercial and large MPV applications.
Fitted to models such as the Vivaro B and Movan…
Production years 2015–2018 meet Euro 6d-TEMP standards; 2019–2023 models meet Euro 6d (VCA UK Type Approval #VCA/EMS/9125).
The Vauxhall M9T 676 is a 2,298 cc inline‑four turbo‑diesel engineered for light commercial vehicles and large MPVs (2015–2023). It combines Bosch common‑rail direct injection with a single variable‑geometry turbocharger to deliver robust low-end torque and commercial-grade reliability. Designed to meet Euro 6d-TEMP (pre-2019) and Euro 6d (post-2019) standards, it integrates advanced aftertreatment systems including DPF and SCR with AdBlue.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,298 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 89.5 mm × 91.5 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 6d-TEMP (2015–2018); Euro 6d (2019–2023) | |
Compression ratio | 15.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell) | |
Timing system | Chain (front‑mounted) | |
Oil type | GM Dexos2 (SAE 5W‑30) | |
Dry weight | 172 kg |
The Vauxhall M9T 676 was used across Vauxhall's Vivaro B and Movano B platforms with transverse mounting under a supply agreement with Renault. This engine received platform-specific adaptations—reinforced engine mounts in the Movano B and revised coolant routing in the Vivaro B—but retained Renault’s core architecture and service requirements. All units are mechanically identical to the Renault M9T 676 used in the Trafic III and Master III. All adaptations are documented in OEM technical bulletins.
The M9T 676's primary reliability risk is high-pressure fuel pump drive wear, with elevated incidence in stop-start urban or delivery-cycle usage. Vauxhall internal data from 2020 indicated a measurable uptick in pump failures before 130,000 km in vehicles with frequent cold starts, while UK DVSA records show SCR/AdBlue-related MOT advisories rising in high-idle usage profiles. Incomplete warm-up cycles and incorrect oil specification accelerate wear, making adherence to Dexos2 oil and service intervals critical.
Analysis derived from Vauxhall technical bulletins (2016–2023) and UK DVSA failure statistics (2018–2023). 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 676 offers strong commercial durability but early units (2015–2018) had fuel pump drive wear concerns. Post-2018 revisions improved reliability. With strict use of GM Dexos2 oil and regular servicing, well-maintained examples can exceed 250,000 km reliably, especially in highway or mixed-use cycles.
Top issues include high-pressure fuel pump drive wear, SCR/AdBlue system faults, EGR cooler clogging, and turbo actuator sticking. These are documented in Vauxhall SIB 16 042 and DVSA emissions data. Most are preventable with correct oil, AdBlue maintenance, and appropriate driving patterns.
It was used in the Vivaro B (2015–2023) and Movano B (2015–2023) as the 2.3 CDTi 165 and 2.3 dCi 165. Mechanically identical to the Renault M9T 676, it also powered the Renault Trafic III and Master III from 2014 onward under Renault’s commercial vehicle program.
Limited tuning potential. Stage 1 remaps may yield +10–15 kW, but the CP4.2 pump and turbo are near design limits. Over-tuning risks premature pump or DPF/SCR failure. Vauxhall does not endorse performance modifications on this emissions-sensitive commercial engine.
Efficient for its class. In a Vivaro 2.3 CDTi, expect ~7.5 L/100km combined (38 mpg UK). Real-world urban driving yields ~8.8 L/100km, while highway runs can drop to ~6.3 L/100km. Euro 6d variants consume slightly more due to SCR system overhead.
Yes. Like all modern DOHC engines, it is interference-design. Timing chain failure—though rare—could cause piston-to-valve contact. However, the chain is front-mounted and generally robust if oil changes are maintained.
GM Dexos2-approved 5W-30 synthetic oil is mandatory. This low-SAPS formulation protects the DPF and SCR system. Use only oils bearing the Dexos2 logo; ACEA C2/C3 alone is insufficient per Vauxhall SIB 16 042.
Comprehensive technical documentation and regulatory references
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VAUXHALL 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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