The Vauxhall Z19DTL is a 1,910 cc, inline‑four turbo‑diesel engine produced between 2005 and 2010. It features a cast‑iron block, aluminium head, dual overhead camshafts (DOHC), and common‑rail direct fuel injection. In standard form it delivered 88 kW (120 PS) at 4,000 rpm and 280 Nm of torque at 2,000 rpm, providing strong low-end pull ideal for urban and motorway driving.
Fitted to models such as the Astra H, Zafira B, and Vectra C, the Z19DTL was engineered to deliver diesel efficiency with improved NVH characteristics over earlier units. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a diesel oxidation catalyst, allowing compliance with Euro 4 standards across all production years.
One documented concern is premature wear of the high-pressure fuel pump cam follower, highlighted in Vauxhall Service Bulletin TECH-09-06. This is typically linked to insufficient lubricity in ultra-low-sulfur diesel or extended oil change intervals, which accelerates wear on the pump drive mechanism. Vauxhall recommends strict adherence to service schedules and use of EN 590-compliant diesel to mitigate this risk.
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6543).
The Vauxhall Z19DTL is a 1,910 cc inline‑four turbo‑diesel engineered for compact and mid-size applications (2005–2010). It combines DOHC valvetrain architecture with Bosch common-rail direct injection to deliver strong low-rpm torque and improved refinement over earlier indirect-injection diesels. Designed to meet Euro 4 emissions standards, it balances drivability with regulatory compliance for its production era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,910 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 82.0 mm × 90.4 mm | |
| Power output | 88 kW (120 PS) @ 4,000 rpm | |
| Torque | 280 Nm @ 2,000 rpm | |
| Fuel system | Bosch CP1 common‑rail (up to 1,350 bar) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 17.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Garrett GT1749V variable-geometry turbo | |
| Timing system | Belt-driven DOHC | |
| Oil type | ACEA B3/B4 (SAE 5W‑40 or 10W‑40) | |
| Dry weight | 148 kg |
The variable-geometry turbo provides responsive low-end torque but requires strict 20,000 km or 12-month oil changes to protect the high-pressure fuel pump cam follower. ACEA B3/B4 oil is critical due to its high shear stability and anti-wear additives. EN 590-compliant ultra-low-sulfur diesel must be used to ensure fuel lubricity. The timing belt must be replaced every 100,000 km or 6 years per Vauxhall TIS guidelines. EGR systems are prone to carbon buildup; periodic cleaning is advised to maintain emissions compliance and idle stability.
Oil Specs: Requires ACEA B3/B4 specification (Vauxhall SIB TECH-09-06). Not compatible with ACEA C-class low-SAPS oils.
Emissions: Euro 4 certification applies to all 2005–2010 Z19DTL models (VCA Type Approval #VCA/EMS/6543).
Power Ratings: Measured under SAE J1349 standards. Output verified via VCA dynamometer logs (VCA/EMS/6543).
Vauxhall Technical Information System (TIS): Docs ENG-Z19-A, AST-Z19-01
Vauxhall Service Bulletin TECH-09-06
VCA Type Approval Database (VCA/EMS/6543)
SAE International: J1349 Engine Power Certification Standards
The Vauxhall Z19DTL was used across Vauxhall's Astra H, Zafira B, and Vectra C platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced subframes in the Zafira B and revised engine mounts in late Astra H—and from 2007 facelifted models adopted updated ECU calibrations, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front left side of the cylinder block near the timing belt cover (Vauxhall TIS ENG-Z19-A). The 8th VIN digit indicates engine displacement ('9' for 1.9L diesel). All Z19DTL units feature a black plastic intake manifold with “1.9 CDTi” embossed on the side. Critical differentiation from earlier Z19DTH: Z19DTL uses a lower-output calibration (120 PS vs 150 PS) and different ECU mapping. Engine serial numbers begin with “Z19DTL” followed by a 6-digit production code.
The Z19DTL's primary reliability risk is high-pressure fuel pump cam follower wear, with elevated incidence in vehicles using non-compliant diesel or extended oil intervals. Vauxhall internal data (2008) indicated increased pump-related warranty claims in regions with poor fuel quality, while UK DVSA MOT records show moderate emissions faults tied to EGR clogging. Strict adherence to oil and fuel specifications is critical to prevent costly repairs.
Analysis derived from Vauxhall technical bulletins (2005–2010) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL Z-19-DTL.
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
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