The Vauxhall Z19DTH is a 1,910 cc, inline‑four turbo‑diesel engine produced between 2006 and 2011. It features a dual overhead camshaft (DOHC) layout with 16 valves, common — rail direct injection, and a variable geometry turbocharger (VGT). In standard form it delivered 96 kW (130 PS) and 320 Nm of torque, providing strong low — end pull and efficient motorway cruising.
Fitted to models such as the Astra H, Zafira B, and Vectra C, the Z19DTH was engineered for drivers seekin…
All production years 2006–2011 meet Euro 4 standards .
The Vauxhall Z19DTH is a 1,910 cc inline‑four turbo‑diesel engineered for compact and mid-size models (2006–2011). It combines common-rail direct injection with a variable geometry turbocharger to deliver strong low-RPM torque and efficient cruising. Designed to meet Euro 4 emissions standards, it balances everyday performance with fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,910 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 83.0 mm × 88.3 mm | |
Power output | 96 kW (130 PS) @ 4,000 rpm | |
Torque | 320 Nm @ 2,000 rpm | |
Fuel system | Bosch CP3 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable-geometry turbo (Garrett) | |
Timing system | Chain-driven DOHC | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 158 kg |
The Vauxhall Z19DTH was used across Vauxhall's Astra H, Zafira B, and Vectra C platforms with transverse mounting and shared with Opel under GM's global architecture. This engine received platform-specific adaptations—reinforced engine mounts in the Vectra C and revised DPF housings in facelifted Astra H models—and from 2008 the ECU calibration was updated to improve regeneration logic, creating minor service distinctions. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 Z19DTH offers strong torque and good economy but is prone to DPF clogging if used only for short urban trips. With regular highway driving and correct oil changes using Dexos2 5W-30, it can exceed 200,000 km. Early models (2006–2007) are more susceptible to fuel pump and EGR issues.
Top issues include DPF clogging, EGR valve/cooler fouling, high-pressure fuel pump wear, and timing chain tensioner wear. These are documented in Vauxhall service bulletins, especially TIS 09-01-06 for DPF and SIB 08-05-04 for fuel system concerns.
It powered the Astra H 1.9 CDTi 130 (2006–2011), Zafira B 1.9 CDTi 130 (2006–2011), and Vectra C 1.9 CDTi 130 (2006–2008). It was also used in Opel Astra H, Zafira B, and Vectra C under GM's shared platform strategy. All are Euro 4 compliant with DPF.
Aftermarket ECU tuning is common on the Z-19-DTH platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In an Astra H 1.9 CDTi 130, expect ~6.2 L/100km (city) and ~4.3 L/100km (highway), or about 48 mpg UK combined. Real-world mixed driving typically yields 42–50 mpg (UK), depending on DPF regeneration cycles and driving style.
Yes. The Z19DTH is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic internal damage. However, the chain is robust if oil is changed regularly with correct specification.
Vauxhall specifies GM Dexos2 5W-30 or ACEA C3 equivalent. This low-ash oil minimizes DPF contamination and ensures proper chain lubrication. Change every 10,000–15,000 km maximum.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.