The Vauxhall Z17DTH is a 1,686 cc, inline‑four turbo‑diesel engine produced between 2006 and 2014. It features a dual overhead camshaft (DOHC), 16‑valve layout with common‑rail direct injection and a variable geometry turbocharger (VGT). In standard form it delivered 81 kW (110 PS) at 4,000 rpm and 250 Nm of torque at 2,000 rpm, providing strong low‑end pull ideal for urban and motorway driving.
Fitted primarily to the Corsa D, Astra H, and Meriva B, the Z17DTH was engineer…
Production years 2006–2008 meet Euro 4 standards; 2009–2014 models meet Euro 5 depending on market .
The Vauxhall Z17DTH is a 1,686 cc inline‑four turbo‑diesel engineered for compact hatchbacks and MPVs (2006–2014). It combines DOHC 16‑valve architecture with common‑rail injection and a variable‑geometry turbocharger to deliver responsive low‑rpm torque and efficient cruising. Designed to meet Euro 4 (and later Euro 5) standards, it balances urban drivability with fuel economy.
| 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 | 81 kW (110 PS) @ 4,000 rpm | |
Torque | 250 Nm @ 2,000 rpm | |
Fuel system | Bosch CP3 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 4 (2006–2008); Euro 5 (2009–2014, market-dependent) | |
Compression ratio | 16.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Chain‑driven (maintenance‑free design) | |
Oil type | Vauxhall GM‑LL‑B‑025 (SAE 5W‑30) | |
Dry weight | 142 kg |
The Vauxhall Z17DTH was used across Vauxhall's T250 and T300 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Meriva B and modified exhaust routing in the Astra H—and from 2009 the addition of a DPF on certain variants, creating minor service distinctions. All adaptations are documented in OEM technical bulletins.
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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.
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The Z17DTH is generally reliable if maintained properly. Early models (2006–2009) have known HPFP issues, but post-2010 revisions improved durability. Regular oil changes every 10,000 km and use of correct 5W‑30 oil with EN 590 diesel are essential for longevity.
Top issues include high-pressure fuel pump failure (pre-2010), DPF clogging (2009+), EGR carbon buildup, and timing chain tensioner wear. These are well-documented in Vauxhall service bulletins and commonly observed in high-mileage examples.
The Z17DTH powered the Corsa D (2006–2014), Astra H (2006–2009), and Meriva B (2010–2014) as the 1.7 CDTi 110. It was exclusive to these Vauxhall/Opel models and not licensed externally.
Aftermarket ECU tuning is common on the Z-17-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.
Excellent for its class. In a Corsa D 1.7 CDTi, expect ~5.8 L/100km (city) and ~4.2 L/100km (highway), or about 52 mpg UK combined. Real-world mixed driving typically yields 48–55 mpg (UK) when well-maintained and driven moderately.
Yes. The Z17DTH is an interference engine. If the timing chain fails (rare but possible with severe oil neglect), pistons can contact open valves, causing internal damage. However, the chain is designed for life-of-engine service with proper oil maintenance.
Vauxhall specifies a 5W‑30 synthetic oil meeting GM‑LL‑B‑025 (or ACEA C3). Always change oil at 10,000–15,000 km intervals to protect the turbo, chain, and DPF system, and ensure proper HPFP lubrication.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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