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 .
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 | Refer to vehicle handbook / manufacturer specification | |
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.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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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.
Aftermarket ECU tuning is common on the G9U-724 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
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
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Official guidance on engine swaps and inspection implications.
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UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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