The Vauxhall F9Q 774 is a 1,461 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018 under licence from Renault. It features a single overhead camshaft (SOHC), 8 valves, and a fixed-geometry turbocharger with intercooler. In standard form it delivered 66 kW (90 PS) at 4,000 rpm and 220 Nm of torque at 1,750 rpm, providing strong low-end pull for light commercial and urban use.
Fitted to models such as the Combo C and Vivaro A, the F9Q 774 was engineered for durability and cost-effective servicing in fleet and delivery applications. Emissions compliance was achieved through exhaust gas recirculation (EGR) and an oxidation catalyst, allowing all units to meet Euro 5 standards.
One documented concern is premature wear of the dual-mass flywheel and clutch assembly, which can cause driveline shudder and noise. This issue, highlighted in Vauxhall Service Bulletin TIS-12-08-15, is attributed to torsional vibration characteristics of the 8-valve design under frequent stop-start cycles. From 2014, revised flywheel and clutch kits were introduced to improve service life.
All production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/6721).
The Vauxhall F9Q 774 is a 1,461 cc inline‑four turbo‑diesel engine engineered for light commercial vehicles (2010–2018). It combines SOHC 8-valve architecture with a fixed-geometry turbocharger to deliver robust low-RPM torque and simplified maintenance. Designed to meet Euro 5 emissions standards, it prioritises durability and operational economy over refinement.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged (fixed geometry) | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 66 kW (90 PS) @ 4,000 rpm | |
| Torque | 220 Nm @ 1,750 rpm | |
| Fuel system | Bosch VP37 distributor pump | |
| Emissions standard | Euro 5 | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Fixed-geometry turbo (Garrett GT15) | |
| Timing system | Belt-driven (requires replacement) | |
| Oil type | ACEA B4 (SAE 5W‑30) | |
| Dry weight | 138 kg |
The SOHC 8-valve design offers mechanical simplicity and ease of repair but requires strict adherence to 30,000 km or 24-month timing belt replacement intervals to prevent catastrophic failure. ACEA B4 (5W-30) oil is essential for injector and pump longevity due to the Bosch VP37 mechanical fuel system. The fixed-geometry turbo provides predictable boost but is prone to lag above 3,000 rpm. Dual-mass flywheel wear is accelerated by frequent stop-start driving; post-2014 clutch kits include reinforced dampers per Vauxhall SIB TIS-12-08-15. EGR valve clogging is common in urban use and should be inspected every 60,000 km.
Oil Specs: Requires ACEA B4 (5W-30) specification (Vauxhall SIB TIS-12-08-15). Not compatible with ACEA C3 low-SAPS oils.
Emissions: Euro 5 certification applies to all model years (VCA Type Approval #VCA/EMS/6721). No Euro 6 variants exist.
Power Ratings: Measured under SAE J1349 standards. Output consistent across all applications (Vauxhall TIS Doc. V10‑3301).
Vauxhall Technical Information System (TIS): Docs V10‑3301, SIB TIS-12-08-15
VCA Type Approval Database (VCA/EMS/6721)
SAE International: J1349 Engine Power Certification Standards
The Vauxhall F9Q 774 was used across Vauxhall's Combo C and Vivaro A platforms with transverse mounting and licensed from Renault. This engine received platform-specific adaptations—reinforced engine mounts in the Vivaro for payload stability and compact accessory layout in the Combo—and from 2014 the clutch and flywheel assembly was revised to address driveline shudder, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left side of the cylinder block near the injection pump (Vauxhall TIS V10‑3301). The 8th VIN digit indicates engine displacement ('9' for 1.5L diesel). All F9Q 774 units feature a black plastic cam cover with '1.5 dCi' embossed and a single camshaft pulley. Critical differentiation from F9Q 782: F9Q 774 uses Bosch VP37 mechanical injection pump; F9Q 782 uses common-rail system. Service parts for flywheel and clutch differ pre/post 2014 due to damper redesign (Vauxhall SIB TIS-12-08-15).
The F9Q 774's primary reliability risk is dual-mass flywheel degradation, with elevated incidence in stop-start urban delivery cycles. Vauxhall internal data from 2013 noted a significant rise in driveline shudder complaints on Combo C vans under 80,000 km in fleet use, while UK DVSA MOT records show EGR-related emissions failures as a recurring cause in light commercial vehicles. Frequent short trips and delayed timing belt changes accelerate mechanical wear, making scheduled maintenance critical.
Analysis derived from Vauxhall technical bulletins (2010–2016) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL F9Q-774.
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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)
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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
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VCA Certification Portal
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