The Vauxhall F4R 820 is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 2004 and 2010. It features Renault’s twin‑variable cam phasing (CVVT), dual overhead camshafts (DOHC), and 16 valves. In standard form it delivers 103 kW (140 PS) and 195 Nm of torque, with linear power delivery and refined high‑rpm character typical of Renault’s F‑series architecture.
Fitted to models such as the Vectra C and Signum under a supply agreement with Renault, the F4R 820 was engineered for mid‑size vehicle performance and smoothness. Emissions compliance was achieved through precise electronic throttle control, sequential fuel injection, and a three‑way catalytic converter, allowing adherence to Euro 4 standards across its production run.
One documented concern is premature wear of the variable cam phasing actuators, highlighted in Vauxhall Service Bulletin 08‑034. This issue is linked to oil viscosity degradation and infrequent oil changes, leading to cam timing faults and rough running. From late 2007, revised actuator seals and updated oil pump relief valves were introduced to improve durability.
Production years 2004–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/3217).
The Vauxhall F4R 820 is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for mid‑size sedans and MPVs (2004–2010). It combines sequential multi‑point fuel injection with twin continuously variable cam phasing to deliver smooth, linear power and high‑rpm refinement. Designed to meet Euro 4 standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.7 mm × 93.0 mm | |
| Power output | 103 kW (140 PS) @ 6,000 rpm | |
| Torque | 195 Nm @ 3,750 rpm | |
| Fuel system | Sequential multi‑point fuel injection (SMPI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water‑cooled | |
| Variable valve timing | Twin CVVT (intake and exhaust cam phasing) | |
| Timing system | Chain (front‑mounted, non‑interference design) | |
| Oil type | ACEA A3/B4 (SAE 5W‑40) | |
| Dry weight | 128 kg |
The twin CVVT system provides smooth, responsive power across the rev range but demands strict adherence to 15,000 km oil change intervals using ACEA A3/B4 5W‑40 oil to maintain actuator function. Degraded oil viscosity causes sluggish cam phasing, triggering timing faults and rough idle. The engine’s non‑interference chain design eliminates catastrophic failure risk, but oil quality remains critical for cam phasing reliability. Post‑2007 engines include updated actuator seals per Vauxhall SIB 08 034. Fuel must meet EN 228 standards to protect injectors and catalyst longevity.
Oil Specs: Requires ACEA A3/B4 (5W-40) specification (Vauxhall SIB 08 034).
Emissions: Euro 4 certification applies to all 2004–2010 models (VCA Type Approval #VCA/EMS/3217).
Power Ratings: Measured under SAE J1349 standards. Output validated on EU95 petrol (Vauxhall TIS Doc. V19210).
Vauxhall Technical Information System (TIS): Docs V19110, V19115, SIB 08 034
Renault Parts Catalogue (EPC) F4R-820
VCA Type Approval Database (VCA/EMS/3217)
SAE International: J1349 Engine Power Certification Standards
The Vauxhall F4R 820 was used across Vauxhall's Vectra C and Signum platforms with transverse mounting under a supply agreement with Renault. This engine received platform-specific adaptations—reinforced engine mounts in the Signum and revised coolant routing in the Vectra C—but retained Renault’s core architecture and service requirements. All units are mechanically identical to the Renault F4R 820 used in the Laguna II and Mégane II. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Vauxhall TIS V19180). The 7th VIN digit indicates engine family ('F' for F4R series). All F4R 820 units feature a black aluminium valve cover with “F4R” embossed. Critical differentiation from Vauxhall’s own Z20LER: F4R has Renault-style cam phasing actuators on both camshafts, a single serpentine belt, and a distinct intake manifold with integrated throttle body. Service parts for cam phasing actuators differ before and after production date 11/2007 (Vauxhall SIB 08 034).
The F4R 820's primary reliability risk is cam phasing actuator wear due to oil degradation, with elevated incidence in vehicles exceeding 15,000 km between oil changes. Vauxhall internal data from 2009 indicated a measurable uptick in cam timing faults before 120,000 km in high-mileage fleets, while UK DVSA records show no significant emissions-related failures due to the engine’s robust three-way catalyst design. Adherence to correct oil specification and service intervals is critical to maintain variable valve timing function.
Analysis derived from Vauxhall technical bulletins (2008–2010) and UK DVSA failure statistics (2010–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL F4R-820.
Comprehensive technical documentation and regulatory references
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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)
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
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VCA Certification Portal
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