The Vauxhall G9U 720 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2010 and 2019 under licence from Renault. It features a single variable geometry turbocharger (VGT), common‑rail direct injection, and dual overhead camshafts (DOHC) with 16 valves. In standard form it delivers 96 kW (130 PS) and 320 Nm of torque, providing strong low‑end pull for mid‑size crossovers and light commercial vehicles.
Fitted to models such as the Vauxhall Vivaro A, Zafira T…
All production years (2010–2019) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Vauxhall G9U 720 is a 2,188 cc inline‑four turbo‑diesel engineered under Renault licence for mid-size passenger and light commercial vehicles (2010–2019). It combines common-rail direct injection with a variable-geometry turbocharger to deliver robust low-rpm torque and towing capability. Designed to meet Euro 5 emissions standards, it balances utility with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,188 cc | |
Fuel type | Diesel (EN 590) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (VGT) | |
Bore × stroke | 84.0 mm × 98.5 mm | |
Power output | 96 kW (130 PS) @ 4,000 rpm | |
Torque | 320 Nm @ 1,750 rpm | |
Fuel system | Bosch CP3.4 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Chain (front‑mounted, maintenance‑free design) | |
Oil type | DEXOS2 5W‑30 (ACEA C3) | |
Dry weight | 148 kg |
The Vauxhall G9U 720 was used across Vauxhall's Vivaro A, Zafira Tourer C, and Insignia A platforms with transverse mounting under licence from Renault. This engine received platform-specific adaptations—reinforced engine mounts in the Vivaro for commercial load tolerance and modified exhaust routing in the Insignia—and from 2014 minor fuel system updates were introduced to address HPFP durability, creating service part interchange limits. All adaptations are documented in OEM technical bulletins.
The G9U 720's primary reliability risk is high-pressure fuel pump (HPFP) wear in early builds, with elevated incidence in sustained high-load or hot-climate use. Vauxhall internal data from 2015 indicated a measurable uptick in HPFP replacements before 100,000 km for 2010–2013 units, while UK DVSA records show DPF-related warning lights as the second-most common emissions fault in urban-driven examples. Extended oil intervals and low-quality fuel amplify HPFP and turbo stress, making adherence to DEXOS2 oil and EN 590 diesel critical.
Analysis derived from Vauxhall technical bulletins (2012–2019) and UK DVSA failure statistics (2015–2024). Repair procedures should follow manufacturer guidelines.
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The G9U 720 is generally robust when maintained properly, but early models (2010–2013) had HPFP reliability concerns. Post-2014 revisions improved fuel system durability. Using DEXOS2 5W-30 oil, EN 590 diesel, and adhering to service intervals greatly enhances longevity.
Top issues include high-pressure fuel pump wear, DPF saturation from short trips, EGR valve coking, and turbo actuator sticking. These are documented in Vauxhall service bulletins like PI0819 and supported by DVSA MOT data.
The G9U 720 powers the Vivaro A (2010–2019), Zafira Tourer C (2011–2016), and Insignia A (2010–2013) in 130 PS form. It is a Renault-sourced 2.0L diesel used under licence, identifiable by DOHC architecture, single VGT turbo, and Euro 5 compliance with DPF.
Modest gains are possible. ECU remaps typically yield +15–20 kW (150–155 PS) safely on stock hardware. The turbo and internals tolerate mild increases, but fuel quality and cooling become critical above 155 PS. Always pair tuning with DEXOS2 oil and quality EN 590 diesel.
In a Vivaro 2.0 CDTI 130 PS, expect ~6.2 L/100km (city), ~5.1 L/100km (highway), or ~42 mpg UK combined. Real-world mixed driving typically returns 38–45 mpg UK. Fuel economy is competitive for a Euro 5 diesel with DPF complexity.
Yes. The G9U 720 is an interference design. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the chain is front-mounted and designed for life-of-engine service under proper maintenance.
Vauxhall specifies DEXOS2 5W-30 (ACEA C3) synthetic oil. This low-SAPS formulation protects the DPF and turbo. Never use DEXOS1 or non-approved oils. Change every 20,000 km or 12 months.
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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