The Vauxhall A17DTC is a 1,686 cc, inline‑four turbo‑diesel engine produced between 2013 and 2018. It features common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivers 96 kW (130 PS) and 320 Nm of torque, with strong low‑rpm pull for responsive urban driving.
Fitted to models such as the Astra J, Insignia B, and Zafira Tourer, including the 1.7 CDTi 130 variants, the A17DTC was engineered for fue…
Production years 2013–2014 meet Euro 5 standards; 2015–2018 models comply with Euro 6 depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Vauxhall A17DTC is a 1,686 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2013–2018). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 5 and Euro 6 standards, it balances everyday performance with 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 | 96 kW (130 PS) | |
Torque | 320 Nm @ 2,000–2,500 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 (2013–2014); Euro 6 (2015–2018) | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell) | |
Timing system | Chain (front‑mounted) | |
Oil type | GM dexos2 (SAE 5W‑30) | |
Dry weight | 142 kg |
The Vauxhall A17DTC was used across Vauxhall's Astra J and Insignia B platforms with transverse mounting and shared with Opel and Peugeot under PSA-GM collaboration. This engine received platform-specific adaptations—revised engine mounts in the Zafira Tourer and modified exhaust routing in the Insignia Sports Tourer—and from 2015 the Euro 6 update introduced a closed crankcase ventilation (CCV) system, creating interchange limits. Partnerships allowed Peugeot's 1.6 BlueHDi to share core architecture. All adaptations are documented in OEM technical bulletins.
The A17DTC's primary reliability risk is high-pressure fuel pump drive coupling wear, with elevated incidence in cold-climate or short-trip usage. Vauxhall internal data from 2016 indicated a measurable rate of pump-related failures before 100,000 km in pre-2015 builds, while UK DVSA records show increased DPF-related MOT advisories in high-mileage examples. Extended idling and poor-quality diesel exacerbate pump and injector stress, making fuel specification and oil interval adherence critical.
Analysis derived from Vauxhall technical bulletins (2014–2018) and UK DVSA failure statistics (2016–2023). 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 A17DTC offers good efficiency and torque, but early models (2013–2014) had fuel pump coupling concerns. Post-2015 Euro 6 revisions improved durability. With strict adherence to GM dexos2 oil changes and use of EN 590 diesel, well-maintained examples can exceed 200,000 km reliably.
Top issues include high-pressure fuel pump coupling wear, EGR/DPF clogging from short trips, turbo actuator faults, and occasional injector leakage. These are documented in Vauxhall SIB 11-035 and DVSA emissions data. Regular maintenance greatly reduces occurrence.
The 1.7 CDTi 130 (A17DTC) powered the Astra J (2013–2018), Insignia B (2013–2017), and Zafira Tourer (2013–2018). It was also used in Opel equivalents and shared architecture with Peugeot 1.6 BlueHDi under the GM-PSA alliance.
Yes. Stage 1 ECU remaps typically yield +15–25 kW (20–35 PS) safely, as the internals handle moderate torque increases. However, the CP4.2 pump is sensitive—any tuning must include enhanced fuel filtration and high-quality diesel to avoid premature failure.
Excellent for its class. In an Astra J 1.7 CDTi 130, expect ~5.2 L/100km combined (54 mpg UK). Highway driving can achieve ~4.3 L/100km (66 mpg UK), while city use may rise to ~6.5 L/100km (43 mpg UK), depending on traffic and maintenance.
Yes. The A17DTC is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain is generally robust if serviced correctly with proper oil.
Vauxhall specifies GM dexos2 5W-30 synthetic oil. This is critical for protecting the high-pressure fuel pump and turbo bearings. Oil changes every 15,000 km (or annually) are essential—extended intervals risk pump and chain wear.
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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