The Vauxhall G9U 724 is a 2,298 cc, inline‑four turbo‑diesel engine produced between 2013 and 2021. It features common‑rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivers 120 kW (163 PS) and 380 Nm of torque, providing strong low‑rpm pull ideal for midsize SUVs and MPVs.
Fitted to models such as the Insignia B, Zafira Tourer C, and Grandland X—including the 2.0 CDTi variants—the G9U 724 was engine…
All production years (2013–2021) meet Euro 6b standards (VCA UK Type Approval #VCA/EMS/6025).
The Vauxhall G9U 724 is a 2,298 cc inline‑four turbo‑diesel engineered for midsize and crossover models (2013–2021). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong low‑rpm torque and refined highway performance. Designed to meet Euro 6b, it integrates AdBlue-based SCR for stringent NOx control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,298 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 89.0 mm × 92.4 mm | |
Power output | 120 kW (163 PS) @ 3,750 rpm | |
Torque | 380 Nm @ 1,500–2,750 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
Emissions standard | Euro 6b | |
Compression ratio | 15.5:1 | |
Cooling system | Water‑cooled with electric auxiliary pump | |
Turbocharger | Variable geometry turbo (Garrett GT2056V) | |
Timing system | Chain (front‑mounted; maintenance‑free design) | |
Oil type | DEXOS2 5W‑30 (ACEA C3) | |
Dry weight | 165 kg |
The Vauxhall G9U 724 was used across Vauxhall's Insignia B, Zafira Tourer C, and Grandland X platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Grandland X for NVH control and modified AdBlue tank routing in the Insignia—and from 2017 the Zafira Tourer adopted updated injector hardware, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The G9U 724's primary reliability risk is diesel injector carbon fouling under short-trip urban use. Vauxhall internal field data (2019) indicated elevated injector replacement rates before 100,000 km in fleet vehicles with limited highway driving, while UK DVSA records show moderate AdBlue system advisories in high-mileage examples. Thermal cycling and incomplete regeneration make driving profile and fuel quality critical.
Analysis derived from Vauxhall technical bulletins (2013–2021) and UK DVSA failure statistics (2015–2023). 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 G9U 724 offers strong torque and refinement, but early units (2013–2016) had injector fouling concerns under urban use. Later revisions improved injector durability. With proper maintenance—especially using DEXOS2 5W-30 oil, quality diesel, and regular highway driving—most engines exceed 200,000 km without major issues.
Top issues include diesel injector carbon fouling, AdBlue system crystallisation, DPF pressure sensor drift, and VGT actuator sticking. Injector and AdBlue problems are addressed in Vauxhall service bulletins PI0912 and TIS-G9U724-08.
The G9U 724 powered the Insignia B (2017–2021), Zafira Tourer C (2013–2018), and Grandland X (2017–2021) in 2.0 CDTi 163 PS form. It was not used in commercial vehicles or licensed to other manufacturers. All applications are transverse FWD or AWD layouts with Euro 6b SCR systems.
Yes. Stage 1 ECU remaps typically yield +20–25 kW (190–195 PS) safely on stock hardware. The turbo and internals tolerate moderate increases, but injector and AdBlue system reliability become critical above 200 PS. Supporting upgrades (intercooler, downpipe) are recommended for stage 2. Always use EN 590 diesel if tuned.
In an Insignia 2.0 CDTi (163 PS), expect ~6.2 L/100km (city), ~4.5 L/100km (highway), or ~52 mpg UK combined. Real-world mixed driving typically returns 44–48 mpg UK. Economy suffers with short trips due to frequent DPF/SCR regeneration cycles and AdBlue consumption.
Yes. The G9U 724 is an interference engine. If the timing chain fails (extremely rare due to front-mounted design), piston-to-valve contact will cause catastrophic damage. However, the chain is designed for life-of-engine service with proper oil maintenance.
Vauxhall specifies DEXOS2 5W-30 (ACEA C3) synthetic oil. This low-SAPS formulation protects the turbo, HPFP, and emissions systems. Change intervals should not exceed 15,000 km or 12 months, especially with urban driving.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VAUXHALL or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVAUXHALL documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.