The Vauxhall G9MB6 is a 1,461 cc, inline‑four turbo‑diesel engine sourced from Renault and produced between 2010 and 2018. It features common‑rail direct injection, a single variable‑geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivered 66 kW (90 PS) and 220 Nm of torque, with variable valve timing enhancing low‑end responsiveness for urban driving.
Fitted exclusively to the Vauxhall Meriva B, the G9MB6 was engineered for compact‑MPV efficiency, offering strong low‑rpm pull and low CO₂ emissions. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), allowing Euro 5 compliance across all markets.
One documented concern is dual-mass flywheel (DMF) premature wear, highlighted in Vauxhall Service Information Bulletin 07‑15‑04. This issue is linked to torsional vibration characteristics of the 1.5 L Renault dCi architecture under frequent stop‑start use. From 2014, revised flywheel and clutch kits were introduced to improve durability.
All production years (2010–2018) meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5682).
The Vauxhall G9MB6 is a 1,461 cc inline‑four turbo‑diesel engineered for compact MPVs (2010–2018). It combines Bosch common‑rail injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient urban driving. Designed to meet Euro 5 standards, it balances city agility with low emissions and fuel consumption.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 70.0 mm × 94.0 mm | |
| Power output | 66 kW (90 PS) | |
| Torque | 220 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP3.4 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | DEXOS2 (SAE 5W‑30) | |
| Dry weight | 128 kg |
The VGT turbo provides strong low-end torque ideal for city driving but requires strict adherence to 15,000 km or 12-month oil change intervals to protect the timing chain and turbo bearings. DEXOS2 (5W-30) oil is critical due to its low-SAPS formulation, which safeguards the DPF. Frequent short trips increase soot loading; occasional highway runs (≥60 km/h for 15+ minutes) are recommended to trigger passive DPF regeneration. The Bosch CP3.4 fuel pump demands ultra-low-sulfur diesel (EN 590) with adequate lubricity—avoid biodiesel blends above B7. Pre-2014 Meriva B models should be inspected for dual-mass flywheel wear per SIB 07 15 04.
Oil Specs: Requires DEXOS2 (5W-30) specification (Vauxhall Owner Manual 2010+). Meets ACEA C3 and API SN standards.
Emissions: Euro 5 certification applies to all 2010–2018 models (VCA Type Approval #VCA/EMS/5682). Confirmed via NEDC testing.
Power Ratings: Measured under UN ECE R85. Output verified on NEDC-compliant dyno per Vauxhall PT‑2022.
Vauxhall Technical Information System (TIS): Docs V7012, V7015, SIB 07 15 04
VCA Type Approval Database (VCA/EMS/5682)
EU Regulation (EC) No 715/2007 (Euro 5)
The Vauxhall G9MB6 was used exclusively in the Vauxhall Meriva B platform with transverse mounting and sourced under license from Renault. This engine received minor platform-specific adaptations—including revised engine mounts and airbox routing—and from 2014 the dual-mass flywheel was updated to address premature wear, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the oil filler neck (Vauxhall TIS V7018). The 7th VIN digit indicates engine family ('K' for G9MB6). All units feature black plastic cam covers with integrated coil packs and a visible DPF in the exhaust system. Critical differentiation from other 1.5L diesels: G9MB6 is a Renault-sourced dCi unit with Bosch CP3.4 pump and unique ECU calibration. Service parts for flywheels differ pre- and post-2014 per SIB 07 15 04.
The G9MB6's primary reliability risk is dual-mass flywheel (DMF) wear, with elevated incidence in pre‑2014 Meriva B models under frequent urban driving. Vauxhall internal data from 2016 indicated a notable uptick in DMF replacements before 100,000 km, while UK DVSA records show minimal DPF‑related MOT failures due to robust regeneration logic. Stop-start cycles and aggressive clutch engagement accelerate wear, making drivetrain maintenance critical.
Analysis derived from Vauxhall technical bulletins (2010–2018) and UK DVSA failure statistics (2011–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL G9MB6.
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