The Vauxhall G9U 730 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2010 and 2019 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 95 kW (130 PS) at 4,000 rpm and 320 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 A and Zafira Tourer, the G9U 730 was enginee…
All production years 2010–2019 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7103).
The Vauxhall G9U 730 is a 2,188 cc inline‑four turbo‑diesel engine engineered for light commercial and MPV applications (2010–2019). It combines DOHC 16-valve architecture with a variable geometry turbocharger to deliver robust low-RPM torque and highway refinement. Designed to meet Euro 5 emissions standards, it balances load-carrying capability with fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,188 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (VGT) | |
Bore × stroke | 84.0 mm × 99.0 mm | |
Power output | 95 kW (130 PS) @ 4,000 rpm | |
Torque | 320 Nm @ 1,750 rpm | |
Fuel system | Bosch CP4.2 common-rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable geometry turbo (Garrett VNT17) | |
Timing system | Chain (maintenance-free design) | |
Oil type | ACEA B4 (SAE 5W‑30) | |
Dry weight | 168 kg |
The Vauxhall G9U 730 was used across Vauxhall's Vivaro A and Zafira Tourer platforms with longitudinal mounting and licensed from Renault. This engine received platform-specific adaptations—reinforced engine mounts in the Vivaro for payload stability and revised cooling ducts in the Zafira Tourer—and from 2015 the clutch and flywheel assembly was upgraded to address driveline shudder, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
The G9U 730's primary reliability risk is dual-mass flywheel degradation, with elevated incidence in stop-start urban and heavy-load use. Vauxhall internal data from 2016 noted increased driveline shudder complaints on Vivaro vans under 100,000 km in delivery fleets, while UK DVSA MOT records show EGR-related emissions failures as a recurring cause in light commercial vehicles. Frequent short trips and delayed oil changes accelerate mechanical wear, making scheduled maintenance critical.
Analysis derived from Vauxhall technical bulletins (2010–2018) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The G9U 730 is robust for commercial and family use but requires disciplined maintenance. Its chain-driven valvetrain avoids timing belt costs, but the dual-mass flywheel is prone to wear under heavy loads. Using ACEA B4 oil and servicing every 15,000 km or annually helps prevent most issues. Post-2015 revisions improved flywheel longevity.
Top issues include dual-mass flywheel failure, EGR cooler leaks, Bosch CP4.2 pump wear, and turbo actuator faults. These are well-documented in Vauxhall service bulletins, especially TIS-13-06-18. Most are preventable with quality diesel, correct oil, and regular servicing.
It was used in the Vivaro A (2010–2019) and Zafira Tourer (2011–2018), both with 130 PS output. This is a licensed Renault G9U variant. All variants meet Euro 5 emissions standards per VCA approval.
Modest gains are possible via ECU remap (+10–15 kW), but the CP4.2 pump and VGT turbo limit potential. Over-tuning risks premature pump or flywheel failure. Most fleet operators prioritise reliability over tuning due to the engine’s commercial orientation.
In a Vivaro 2.2 CDTI, typical consumption is ~7.5 L/100km (city) and ~5.8 L/100km (highway), or about 42 mpg UK combined. Real-world figures range 38–46 mpg (UK) depending on load and driving style.
Yes. The G9U 730 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 B4 (SAE 5W‑30) diesel-rated oil. This is critical for protecting the Bosch CP4.2 high-pressure pump. 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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VAUXHALL Official Site
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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
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