The Vauxhall A17DTL is a 1,686 cc, inline‑four turbo‑charged diesel engine produced between 2010 and 2018. It features a DOHC 16‑valve layout with common‑rail direct injection and a variable geometry turbocharger (VGT). In standard form it delivered 96 kW (130 PS) and 300 Nm of torque, providing strong low‑rpm pull ideal for urban and motorway driving.
Fitted primarily to the Astra J, Insignia A, and Zafira Tourer, the A17DTL was engineered for fuel‑efficient daily use w…
Production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7892).
The Vauxhall A17DTL is a 1,686 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2010–2018). It combines Bosch common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 5 emissions standards, it balances everyday drivability with fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,686 cc | |
Fuel type | Diesel (EN 590) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 79.0 mm × 85.8 mm | |
Power output | 96 kW (130 PS) @ 4,000 rpm | |
Torque | 300 Nm @ 1,750–2,500 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell VNT15) | |
Timing system | Chain (front‑mounted) | |
Oil type | GM Dexos2 (SAE 5W‑30) | |
Dry weight | 142 kg |
The Vauxhall A17DTL was used across Vauxhall's Astra J and Insignia A platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts in the Insignia and revised EGR routing in the Zafira Tourer—and from 2015 the facelifted Astra J MY15 models adopted updated ECU calibrations, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The A17DTL's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in vehicles using non‑Dexos2 oil or extended service intervals. Vauxhall internal data from 2014 indicated a measurable uptick in HPFP-related warranty claims before 100,000 km, while UK DVSA records show no significant emissions failure correlation. Oil quality and change discipline make HPFP longevity critical.
Analysis derived from Vauxhall technical bulletins (2012–2016) and UK DVSA failure statistics (2015–2023). 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 A17DTL offers good torque and efficiency, but early models (2010–2013) had HPFP cam follower reliability concerns. Later units improved component hardness, so well-maintained examples can be robust. Regular servicing and using GM Dexos2 5W‑30 oil greatly aid longevity.
The biggest issues are HPFP cam follower wear, DPF regeneration failures due to short-trip driving, EGR valve coking, and turbo VGT actuator faults. These are documented in Vauxhall service bulletins TIS 13‑021 and 12‑018.
This 1.7L diesel was used in the Astra J (2010–2015), Insignia A (2010–2013), and Zafira Tourer C (2011–2016) as the 1.7 CDTi 130 PS variant. It was not licensed to other manufacturers and was replaced by the B16DTH in later models.
Yes. The A17DTL responds well to ECU remapping, with stage 1 tunes typically yielding +15–25 kW safely. Stock internals handle up to ~160 PS reliably. Supporting mods like a better intercooler and DPF delete (where legal) allow further gains, but may affect emissions compliance.
In an Astra J 1.7 CDTi, typical consumption is ~5.8 L/100km (city) and ~4.0 L/100km (highway), or about 55 mpg UK combined. Real-world economy varies with driving style—expect 48–58 mpg UK on mixed roads for a healthy, unmodified engine.
Yes. The A17DTL is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, causing catastrophic damage. While the chain is generally durable, any unusual timing noise should be investigated immediately.
Vauxhall specifies GM Dexos2 5W‑30 synthetic oil. This is critical for HPFP cam follower lubrication and turbo protection. Always change oil every 15,000 km or 12 months, whichever comes first, especially in stop-start or urban use.
Comprehensive technical documentation and regulatory references
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VAUXHALL Official Site
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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
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