The Vauxhall M9T 716 is a 2,298 cc, inline‑four turbo‑diesel engine produced between 2014 and 2021 under licence from Renault. It features dual overhead camshafts (DOHC), 16 valves, and a variable geometry turbocharger (VGT) with intercooler. In standard form it delivered 103 kW (140 PS) at 3,750 rpm and 340 Nm of torque at 1,750 rpm, providing strong low — end pull for mid — size vans and crossovers.
Fitted to models such as the Vivaro B and Grandland X, the M9T 716 was engineer…
All production years 2014–2021 meet Euro 6b standards (VCA UK Type Approval #VCA/EMS/8452).
The Vauxhall M9T 716 is a 2,298 cc inline‑four turbo‑diesel engine engineered for light commercial and compact SUV applications (2014–2021). It combines DOHC 16-valve architecture with a variable geometry turbocharger to deliver robust low-RPM torque and highway refinement. Designed to meet Euro 6b emissions standards, it balances load-carrying capability with fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,298 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (VGT) | |
Bore × stroke | 89.5 mm × 91.5 mm | |
Power output | 103 kW (140 PS) @ 3,750 rpm | |
Torque | 340 Nm @ 1,750 rpm | |
Fuel system | Bosch CP4.2 common-rail (up to 1,800 bar) | |
Emissions standard | Euro 6b | |
Compression ratio | 15.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable geometry turbo (Garrett VNT17) | |
Timing system | Chain (maintenance-free design) | |
Oil type | ACEA C3 (SAE 5W‑30) | |
Dry weight | 172 kg |
The Vauxhall M9T 716 was used across Vauxhall's Vivaro B and Grandland X platforms with longitudinal mounting and licensed from Renault. This engine received platform-specific adaptations—reinforced engine mounts in the Vivaro B for payload stability and revised cooling ducts in the Grandland X—and from 2017 the ECU calibration was updated to improve DPF regeneration, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The M9T 716's primary reliability risk is DPF regeneration failure due to urban driving patterns, with elevated incidence in stop-start city use. Vauxhall internal data from 2019 noted increased limp-mode activations on Vivaro B vans under 60,000 km in delivery fleets, while UK DVSA MOT records show DPF-related emissions failures as a recurring cause in light commercial vehicles. Frequent short trips and delayed oil changes accelerate soot accumulation, making scheduled highway driving critical.
Analysis derived from Vauxhall technical bulletins (2014–2020) and UK DVSA failure statistics (2017–2023). Repair procedures should follow manufacturer guidelines.
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The M9T 716 is robust for commercial and family use but requires disciplined driving and maintenance. Its chain-driven valvetrain avoids timing belt costs, but DPF regeneration issues are common in urban use. Using ACEA C3 oil, high-quality diesel, and completing regular highway runs helps prevent most issues. Post-2017 revisions improved DPF logic.
Top issues include DPF regeneration failure, EGR valve clogging, Bosch CP4.2 pump wear, and turbo actuator faults. These are well-documented in Vauxhall service bulletins, especially TIS-16-09-20. Most are preventable with quality diesel, correct oil, and mixed driving patterns.
It was used in the Vivaro B (2014–2021) and early Grandland X (2017–2021), both with 140 PS output. This is a licensed Renault M9T variant. All variants meet Euro 6b emissions standards per VCA approval.
Modest gains are possible via ECU remap (+10–15 kW), but the CP4.2 pump and DPF system limit potential. Over-tuning risks premature pump or DPF failure. Most fleet operators prioritise reliability over tuning due to the engine’s commercial orientation.
In a Vivaro B 2.3 CDTI, typical consumption is ~7.8 L/100km (city) and ~6.0 L/100km (highway), or about 40 mpg UK combined. Real-world figures range 36–44 mpg (UK) depending on load and driving style.
Yes. The M9T 716 is an interference engine. However, it uses a durable timing chain with no scheduled replacement. Chain failure is rare, but if it occurs, valve-to-piston contact can cause major damage.
Vauxhall specifies ACEA C3 (SAE 5W‑30) low-SAPS diesel-rated oil. This is critical for protecting the DPF and turbo system. Change intervals should not exceed 15,000 km or 12 months, especially in severe service.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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