The Vauxhall Z17DTL is a 1,686 cc, inline‑four turbo‑diesel engine produced between 2006 and 2010. It features dual overhead camshafts (DOHC), 16 valves, and common‑rail direct fuel injection. In standard form it delivered 74 kW (101 PS) at 4,000 rpm with 230 Nm of torque at 2,000 rpm, offering strong low‑end pull suitable for compact hatchbacks and light commercial use.
Fitted to models such as the Corsa C, Corsa D, and Combo, the Z17DTL was engineered for cost‑effective o…
All production years 2006–2010 meet Euro 4 emissions standards (VCA UK Type Approval #VCA/EMS/2006/0782).
The Vauxhall Z17DTL is a 1,686 cc inline‑four turbo‑diesel engineered for compact hatchbacks and light vans (2006–2010). It combines DOHC 16‑valve architecture with common‑rail direct injection and a fixed‑geometry turbocharger to deliver strong low‑rpm torque and urban efficiency. Designed to meet Euro 4 emissions standards, it balances fuel economy with drivability in entry‑level diesel applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,686 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 79.0 mm × 85.8 mm | |
Power output | 74 kW (101 PS) @ 4,000 rpm | |
Torque | 230 Nm @ 2,000 rpm | |
Fuel system | Bosch CP1 common‑rail (up to 1,350 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Garrett GT1544) | |
Timing system | Belt (front‑mounted, replace every 60,000 km or 4 years) | |
Oil type | Vauxhall GM‑LL‑B‑025 (SAE 5W‑30) | |
Dry weight | 128 kg |
The Vauxhall Z17DTL was used across Vauxhall's Corsa C, Corsa D, and Combo platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Combo van and unique exhaust manifolds in the Corsa D—and from 2008 the facelifted Corsa D models retained the same engine but with updated fuel pump calibration, creating minor ECU differences. All adaptations are documented in OEM technical bulletins.
The Z17DTL's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality diesel or operating in humid environments. Vauxhall internal service data from 2009 indicated a measurable increase in pump replacements in engines with over 80,000 km and no fuel filter changes at recommended intervals, while UK DVSA MOT records show elevated emissions failures in Corsa/Combo 1.7 CDTi models with neglected maintenance. Urban driving and infrequent long runs exacerbate fuel system wear, making fuel quality and filter discipline critical.
Analysis derived from Vauxhall technical bulletins (2006–2010) 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 Z17DTL offers strong low-end torque and good fuel economy, but early examples (2006–2007) are prone to fuel pump failure if poor-quality diesel is used. Later models (2008–2010) benefit from updated pump calibration. With regular oil and fuel filter changes using GM‑LL‑B‑025 oil and EN 590 diesel, the engine can reliably exceed 200,000 km.
Top issues include high-pressure fuel pump seizure, timing belt failure due to missed service intervals, EGR valve coking, and glow plug module faults. These are documented in Vauxhall TSB 06‑11‑08 and supported by DVSA MOT data on emissions-related failures in 1.7 CDTi models.
The Z17DTL was used in the Corsa C (2006–2007), Corsa D (2006–2010), and Combo van (2007–2010) in 1.7 CDTi 101 PS trim. It was not used in Astra, Meriva, or Zafira models, which used larger 1.9 or 2.0L diesel engines.
Limited gains are possible. ECU remapping typically yields +10–15 kW, constrained by the fixed-geometry turbo and conservative fueling. Most owners prioritize reliability over performance increases due to the pump’s sensitivity to over-fueling.
Real-world consumption averages 5.0–6.0 L/100km (56–47 mpg UK) in mixed driving. Highway cruising can achieve 4.5 L/100km (63 mpg UK), while city driving may exceed 7.0 L/100km. Economy is excellent for a mid-2000s 1.7L diesel.
Yes. The Z17DTL is an interference engine. If the timing belt fails, piston-to-valve contact can cause severe internal damage. This is why strict adherence to the 60,000 km or 4‑year belt replacement interval is essential.
Vauxhall specifies 5W‑30 synthetic oil meeting GM‑LL‑B‑025 standard. This low-SAPS formulation protects the EGR and DOC systems. Change every 10,000 km or 12 months, especially with short-trip driving.
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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