The Vauxhall Z16XER is a 1,598 cc, inline‑four naturally aspirated petrol engine produced between 2005 and 2012. It features a dual overhead camshaft (DOHC) layout with 16 valves and variable valve timing on the intake camshaft. In standard form it delivered 81–88 kW (110–120 PS) and 155–160 Nm of torque, providing responsive urban performance with smooth mid — range delivery.
Fitted to models such as the Corsa D, Astra H, and Meriva B, the Z16XER was engineered for drivers…
All production years 2005–2012 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/4892).
The Vauxhall Z16XER is a 1,598 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and MPVs (2005–2012). It combines DOHC architecture with variable intake cam timing to deliver responsive low-speed torque and smooth cruising. Designed to meet Euro 4 emissions standards, it balances performance with drivability and moderate fuel consumption.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 79.0 mm × 81.5 mm | |
Power output | 81–88 kW (110–120 PS) @ 6,000 rpm | |
Torque | 155–160 Nm @ 4,000 rpm | |
Fuel system | Sequential multi-point injection (Bosch Motronic ME7.8) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven DOHC with variable intake phasing | |
Oil type | GM Dexos2 5W‑30 (or ACEA A3/B4 equivalent) | |
Dry weight | 112 kg |
The Vauxhall Z16XER was used across Vauxhall's Corsa D, Astra H, and Meriva B platforms with transverse mounting and shared with Opel under GM's global architecture. This engine received platform-specific adaptations—revised engine mounts in the Meriva B and updated intake manifolds in facelifted Astra H models—and from 2008 the cam phaser design was revised, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The Z16XER's primary reliability risk is variable cam phaser sticking and intake valve carbon fouling, with elevated incidence in vehicles used exclusively for urban short trips. Vauxhall internal data from 2009 indicated a notable portion of Corsa D and Astra H 1.6i models required cam phaser inspection before 90,000 km, while UK DVSA MOT records show increased idle instability failures in high-mileage examples. Infrequent oil changes and low-quality oil dramatically accelerate phaser wear and deposit formation, making adherence to Dexos2 specification critical.
Analysis derived from Vauxhall technical bulletins (2007–2012) 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 Z16XER is generally reliable with proper maintenance but prone to cam phaser issues and carbon buildup if used only for short urban trips. Early models (2005–2007) are more susceptible to phaser wear. With regular oil changes using Dexos2 5W-30 and timely induction cleaning, it can exceed 200,000 km without major issues.
Top issues include variable cam phaser sticking, intake valve carbon fouling, ignition coil pack failure, and plastic thermostat housing leaks. These are documented in Vauxhall service bulletins, especially TIS 07-03-05 for phaser and oil-related concerns.
It powered the Corsa D 1.6i (2006–2012), Astra H 1.6i (2005–2010), and Meriva B 1.6i (2010–2012). It was also used in Opel Corsa D, Astra H, and Meriva B under GM's shared platform strategy. All are Euro 4 compliant.
Modest gains are possible. ECU remaps yield +8–12 kW, while induction and exhaust upgrades add marginal improvements. Forced induction is uncommon due to cost and complexity. Most owners prioritize reliability over performance tuning.
In a Corsa D 1.6i, expect ~8.2 L/100km (city) and ~5.4 L/100km (highway), or about 42 mpg UK combined. Real-world mixed driving typically yields 38–45 mpg (UK), depending on condition and driving style.
Yes. The Z16XER is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause significant internal damage. However, the chain is robust if oil is maintained with correct specification and intervals.
Vauxhall specifies GM Dexos2 5W-30 or ACEA A3/B4 equivalent. This high-quality synthetic oil ensures proper lubrication of the cam phasers and chain. Change every 10,000–15,000 km maximum.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VAUXHALL or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVAUXHALL documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.