The Vauxhall A22DM is a 2,198 cc, inline‑four naturally aspirated petrol engine produced between 2003 and 2010. Developed under GM’s Ecotec family, it features a dual overhead camshaft (DOHC) layout, 16 valves, and sequential multi — point fuel injection. In standard form it delivers 103–110 kW (140–150 PS) with peak torque of 200–210 Nm, offering smooth mid — range response suited to mid — size applications.
Fitted to models such as the Vectra C, Signum, and Zafira B, incl…
All production years (2003–2010) meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/3321).
The Vauxhall A22DM is a 2,198 cc inline‑four naturally aspirated petrol engine engineered for mid-size sedans and MPVs (2003–2010). It combines sequential multi-point fuel injection with DOHC architecture to deliver smooth power delivery and strong mid-range torque. Designed to meet Euro 4 emissions standards, it relies on a three-way catalytic converter and precise air-fuel control without turbocharging or direct injection.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,198 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 94.6 mm | |
Power output | 103–110 kW (140–150 PS) | |
Torque | 200–210 Nm @ 4,000 rpm | |
Fuel system | Sequential multi-point injection (Bosch ME7.9.7) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted) | |
Oil type | GM Dexos2 5W‑30 or ACEA A3/B4 | |
Dry weight | 142 kg |
The Vauxhall A22DM was used across Vauxhall's Vectra C, Signum, and Zafira B platforms with transverse mounting and shared with Opel and Saab under GM global architecture. This engine received platform-specific calibrations—revised engine mounts in the Signum and acoustic covers in the Zafira—and from 2007 the camshaft material update created minor interchange limits for timing system compatibility. All adaptations are documented in OEM technical bulletins.
The A22DM's primary reliability risk is exhaust camshaft lobe wear driving the variable intake timing actuator, with elevated incidence in vehicles subjected to extended oil change intervals. Vauxhall internal data (2009) indicated a notable share of pre-2007 engines required camshaft replacement before 150,000 km, while UK DVSA MOT records show catalytic converter failures rising in high-idle applications. Infrequent oil changes and incorrect viscosity increase stress on the cam lobes, making adherence to Dexos2 oil and service intervals critical.
Analysis derived from Vauxhall technical bulletins (2007–2010) and UK DVSA failure statistics (2010–2023). 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 A22DM offers smooth power delivery and strong refinement, but early models (2003–2006) are prone to exhaust camshaft lobe wear driving the VVT system. Post-2007 revisions improved durability. Longevity depends heavily on using Dexos2 5W-30 oil, RON 95 petrol, and adhering to 15,000 km service intervals.
Top issues include exhaust cam lobe wear (affecting VVT), catalytic converter degradation, throttle body carbon buildup, and oil leaks from cam/sump covers. These are documented in Vauxhall TSBs and DVSA MOT data. Regular oil changes and correct fuel/oil greatly reduce risk.
The A22DM powered the Vectra C (2003–2008), Signum (2003–2008), and Zafira B (2005–2010) in 2.2i 140/150 variants. It is mechanically identical to the GM Ecotec L61 used in Opel Vectra and Saab 9-3 from the same era.
Yes. Stage 1 ECU remaps typically yield +10–15 kW safely, as the internals handle moderate power increases. However, the exhaust cam lobes and catalytic converter are weak points—any tuning should include high-flow intake/exhaust and ensure ignition components remain OEM-spec to avoid emissions faults.
Moderate for its class. In a Vectra 2.2i 150, expect ~9.5 L/100km (city) and ~6.2 L/100km (highway), or ~36 mpg UK combined. Real-world mixed driving typically returns 32–38 mpg (UK) with conservative use.
Yes. The A22DM is an interference design. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain is generally robust with proper oil maintenance.
Vauxhall specifies GM Dexos2 5W-30 or ACEA A3/B4 synthetic oil. This is mandatory for camshaft lobe protection and VVT system lubrication. Change every 15,000 km or annually—whichever comes first—to prevent wear and carbon buildup.
Comprehensive technical documentation and regulatory references
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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.
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