The Vauxhall M9T 680 is a 2,298 cc, inline‑four turbo‑diesel engine produced between 2016 and 2021. It features common‑rail direct injection, a variable‑geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivers 103 kW (140 PS) at 3,750 rpm and 340 Nm of torque at 1,750 rpm, offering strong low‑end pull for mid‑size and commercial vehicles.
Fitted to models such as the Vivaro B and Movano B, the M9T 680 was engineered for durability, fuel efficiency under load, and compliance with Euro 6b and Euro 6d‑TEMP emissions standards. Emissions control was achieved through cooled exhaust gas recirculation (EGR), a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection.
One documented concern is premature wear of the high-pressure fuel pump (HPFP) drive lobe on the camshaft, highlighted in Vauxhall Service Bulletin 09‑075. This is attributed to marginal lubrication under high thermal load and extended service intervals. From mid‑2018, revised camshaft metallurgy and updated HPFP internals were introduced to mitigate the issue on Euro 6d‑TEMP-compliant units.
Production years 2016–2017 meet Euro 6b standards; 2018–2021 models meet Euro 6d‑TEMP (VCA UK Type Approval #VCA/EMS/9012).
The Vauxhall M9T 680 is a 2,298 cc inline‑four turbo‑diesel engineered for light commercial and MPV applications (2016–2021). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient load-carrying performance. Designed to meet Euro 6b (early) and Euro 6d‑TEMP (late) standards, it balances workhorse capability with stringent emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,298 cc | |
| Fuel type | Diesel (EN 590) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged (VGT) | |
| Bore × stroke | 89.0 mm × 92.4 mm | |
| Power output | 103 kW (140 PS) @ 3,750 rpm | |
| Torque | 340 Nm @ 1,750–2,500 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6b (2016–2017); Euro 6d‑TEMP (2018–2021) | |
| Compression ratio | 15.5:1 | |
| Cooling system | Water‑cooled with electric auxiliary pump | |
| Turbocharger | Single variable‑geometry turbo (BorgWarner) | |
| Timing system | Chain (front‑mounted, maintenance‑free design) | |
| Oil type | DEXOS2 5W‑30 | |
| Dry weight | 178 kg |
The VGT turbo provides strong low-RPM torque ideal for load-carrying and stop-start delivery cycles but requires strict adherence to oil change intervals (max 20,000 km or 12 months) to protect the HPFP drive lobe and timing chain. DEXOS2‑approved 5W‑30 oil is critical to prevent cam wear and maintain turbo bearing life. Use only EN 590 ultra-low-sulfur diesel to avoid CP4.2 pump seizure. Euro 6d‑TEMP models require regular AdBlue top-ups and DPF regeneration cycles; occasional extended drives (>30 min) are recommended. Post‑2018 engines include revised camshaft and HPFP components per Vauxhall SIB 09‑075; pre‑2018 units benefit from proactive inspection of cam lobe wear during major services.
Oil Specs: Requires GM DEXOS2 specification (Vauxhall Owner's Manual Vivaro B 2017). ACEA C2/C3 oils are not approved.
Emissions: Euro 6b applies to 2016–2017 models; Euro 6d‑TEMP applies to 2018–2021 models (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under ISO 1585 standards. Power output assumes EN 590 diesel fuel (Vauxhall TIS Doc. V‑ENG‑M9T‑04).
Vauxhall Technical Information System (TIS): Docs V‑ENG‑M9T‑01 through V‑ENG‑M9T‑05, SIB 09‑075
VCA Type Approval Database (VCA/EMS/9012)
ISO 1585: Road vehicles — Engine test code
The Vauxhall M9T 680 was used across Vauxhall's Vivaro B and Movano B platforms with transverse mounting and licensed from Renault. This engine received platform-specific adaptations—revised engine mounts in the Movano B and modified exhaust routing in the Vivaro B—and from 2018 received updated camshaft metallurgy and SCR/AdBlue integration for Euro 6d‑TEMP compliance, creating minor 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 (Vauxhall TIS V‑ENG‑M9T‑02). The 7th VIN digit is 'M' for this engine family. Pre-2018 units use standard camshaft; post-2018 revisions include hardened HPFP drive lobe per SIB 09‑075. Visual differentiation: all M9T 680 units have black plastic cam covers with '2.3 CDTI' embossed. Do not confuse with higher-output M9T 682 (170 PS) which has different turbo and ECU. HPFP/camshaft replacement requires matching production date to bulletin 09‑075 applicability.
The M9T 680's primary reliability risk is high-pressure fuel pump (HPFP) drive lobe wear on the camshaft under sustained high-load conditions, with elevated incidence in pre-2018 builds. Vauxhall internal data from 2020 indicated a measurable uptick in HPFP-related warranty claims for early Euro 6b units before 120,000 km, while UK DVSA records show minimal emissions-related MOT failures due to robust aftertreatment design. Extended high-RPM operation and infrequent oil changes increase thermal stress on the cam/HPFP interface, making fuel quality and maintenance adherence critical.
Analysis derived from Vauxhall technical bulletins (2016–2021) and UK DVSA failure statistics (2018–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL M9T-680.
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