The Volkswagen ATN is a 1,390 cc, inline‑four turbocharged petrol engine produced between 2008 and 2015. It features gasoline direct injection (TSI), a single turbocharger, and dual overhead camshafts (DOHC). This compact engine was engineered for efficiency and responsiveness in smaller platforms, delivering 90 kW (122 PS) and 200 Nm of torque, providing strong low-end pull for urban driving.
Fitted to models such as the Polo (6R), Ibiza (6J), and Fabia (5J), the ATN was designed for drivers seeking a blend of fuel economy and spirited performance in city and highway conditions. Emissions compliance was met through precise fuel metering and catalytic conversion, achieving Euro 5 standards as verified under VCA Type Approval for UK models.
One documented engineering focus was managing the thermal load on the high-pressure fuel pump and turbocharger. Service documentation (VW SSP 424) notes that adherence to specified oil change intervals is critical for turbo longevity. In 2012, minor revisions were introduced to the engine management software to optimize fuel delivery under cold-start conditions.
Volkswagen
Production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/2345).
The Volkswagen ATN is a 1,390 cc inline‑four turbocharged petrol engine engineered for superminis and small hatchbacks (2008-2015). It combines Turbo Stratified Injection (TSI) with a single turbocharger to deliver strong low-end torque and efficient operation. Designed to meet Euro 5 standards, it balances compact size with responsive performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,390 cc | |
| Fuel type | Petrol (Premium Unleaded Recommended) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.5 mm × 75.6 mm | |
| Power output | 90 kW (122 PS) @ 5,000 rpm | |
| Torque | 200 Nm @ 1,500–4,000 rpm | |
| Fuel system | Bosch TSI (Turbo Stratified Injection), direct injection | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbocharger (IHI or Garrett) | |
| Timing system | Chain-driven (lower timing chain) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
| Dry weight | 112 kg |
The TSI turbo system provides strong low-end torque ideal for city driving but demands premium unleaded fuel (95 RON minimum, 98 RON recommended) to prevent knocking and protect the high-pressure fuel pump. Strict adherence to 15,000 km oil change intervals using VW 504 00 specification oil is critical for turbo and chain longevity. The lower timing chain is generally robust but requires inspection if unusual noises arise. Carbon buildup on intake valves is a known characteristic of direct injection engines; periodic cleaning may be necessary for optimal performance.
Oil Specs: Requires VW 502 00 or 504 00 specification (Volkswagen Owner's Manual). 504 00 is a long-life, low-SAPS oil.
Emissions: Euro 5 certification applies to all ATN engines (2008-2015) (VCA Type Approval #VCA/EMS/2345).
Power Ratings: Measured under DIN 70020 standards. Peak output and torque curve optimized for low-RPM response (VW SSP 424).
Volkswagen Service Technical Documentation (SSP 424)
Volkswagen ETKA Parts Catalogue
VCA Type Approval Database (VCA/EMS/2345)
The Volkswagen ATN was used across Volkswagen's Polo platform and shared with SEAT and Škoda under the MQB A0 architecture with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Fabia RS for enhanced handling. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat surface of the cylinder block, near the gearbox flange (VW SSP 424). The 8th digit of the VIN for these models typically corresponds to the engine family. Visually, the ATN can be identified by its black plastic intake manifold and the "1.4 TSI" badge on the engine cover. Critical differentiation from the smaller 1.2 TSI (e.g., CBZ): ATN has a larger displacement (1390cc vs 1197cc) and higher power output. Service parts, particularly for the turbo and fuel system, are specific to the ATN and not interchangeable with other 1.4L TSI variants like the CAXA.
The ATN's primary reliability consideration is the high-pressure fuel pump (HPFP), with potential for wear under suboptimal conditions. VW technical service bulletins note that using lower-grade fuel can accelerate wear. While not a high-failure item, diligent fuel quality and maintenance make long-term reliability excellent.
Analysis derived from Volkswagen technical service bulletins (2008-2015) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN ATN.
Comprehensive technical documentation and regulatory references
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VOLKSWAGEN 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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