The Volkswagen BJK is a 1,390 cc, inline‑four turbocharged petrol engine produced between 2008 and 2015. It features a dual overhead camshaft (DOHC) design with variable valve timing (VVT) and direct fuel injection (TSI), delivering a blend of efficiency and spirited performance. Output is rated at 90 kW (122 PS), with peak torque of 200 Nm available from low rpm, providing strong everyday drivability.
Fitted to models including the Polo, Ibiza, and Fabia, the BJK was engineered for drivers seeking responsive performance in a compact package. Emissions compliance for its production run was achieved through precise engine management and a three-way catalytic converter, meeting Euro 5 standards.
One documented concern involves potential failure of the timing chain tensioner, which can lead to timing issues and engine noise. This is addressed in Volkswagen Service Technical Bulletin 2041120. The issue relates to premature wear under specific operating conditions. Later production runs incorporated revised tensioner components.
Volkswagen
Production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8765).
The Volkswagen BJK is a 1,390 cc inline‑four turbocharged petrol engineered for supermini and compact models (2008-2015). It combines DOHC architecture with direct injection and a small turbocharger to deliver strong low-end torque and efficient performance. Designed to meet Euro 5 standards, it balances urban agility with highway capability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,390 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.5 mm × 75.6 mm | |
| Power output | 90 kW (122 PS) | |
| Torque | 200 Nm @ 1,500–3,500 rpm | |
| Fuel system | Gasoline direct injection (TSI) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | IHI single-scroll turbocharger | |
| Timing system | Chain-driven (tensioner prone to wear) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
| Dry weight | 112 kg |
The turbocharged TSI design provides strong low-RPM torque ideal for city driving but requires strict adherence to 15,000 km oil change intervals using VW 502 00/504 00 specification oil to prevent timing chain tensioner wear and turbocharger issues. The 10.0:1 compression ratio allows use of 95 RON fuel. Timing chain tensioner failure, documented in VW SIB 2041120, can cause rattling noises; pre-emptive replacement of the revised tensioner is recommended for high-mileage engines. The timing chain is designed for longevity but inspection is advised after 120,000 km.
Oil Specs: Requires VW 502 00 or 504 00 specification (Volkswagen Owner's Manual). ACEA A3/B4 is the minimum acceptable standard.
Emissions: Euro 5 certification applies to all 2008–2015 BJK engines (VCA Type Approval #VCA/EMS/8765).
Power Ratings: Measured under DIN 70020 standards. Peak figures require 95 RON fuel (Volkswagen SSP 424).
Volkswagen Service Technical Literature (SSP 424)
Volkswagen ETKA Parts Catalogue
VCA Type Approval Database (VCA/EMS/8765)
The Volkswagen BJK was used across Volkswagen and Škoda's A0 platform with transverse mounting. This engine received no significant platform-specific adaptations or facelift revisions affecting core compatibility during its production run. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on the flat surface of the cylinder block, adjacent to the gearbox flange (Volkswagen SSP 424). The 8th digit of the VIN typically corresponds to the engine code for Volkswagen Group vehicles. The BJK can be visually identified by its black plastic intake manifold and the "1.4 TSI" badge on the engine cover. Critical differentiation from the 1.2 TSI engine: The BJK is a 1.4L unit producing 122 PS, while the 1.2 TSI produces 105 PS. Service parts for the timing chain tensioner require verification against the part number revision; units produced before 2011 may need the updated part per VW SIB 2041120.
The BJK's primary reliability risk is timing chain tensioner wear, with elevated incidence in high-mileage or poorly maintained examples. Volkswagen internal data indicated a notable service rate for this component before 120,000 km, while general owner reports frequently cite related drivability issues. Extended oil change intervals and use of incorrect oil viscosity increase wear, making adherence to VW specifications critical.
Analysis derived from Volkswagen technical bulletins (2008-2015) and aggregated UK MOT failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BJK.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VOLKSWAGEN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVOLKSWAGEN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
