The Volkswagen BWF is a 1,984 cc, inline‑four petrol engine produced between 2005 and 2010. It features a DOHC valvetrain, variable valve timing (VVT), and electronic throttle control. This engine, part of the EA113 family, was designed for responsive performance, delivering outputs around 110 kW (150 PS) and 200 Nm of torque, making it suitable for spirited driving in mid-size vehicles.
Fitted primarily to the Mk5 Golf GT and Jetta models, the BWF was engineered for a balance of performance and refinement. It targeted drivers seeking more power than base models without the complexity of turbocharging. Emissions compliance was achieved through precise fuel injection and catalytic conversion, meeting Euro 4 standards.
One documented service concern is premature wear of the intake camshaft follower for the variable valve timing system, as noted in Volkswagen Service Technical Bulletin 2028062. This wear can lead to reduced performance and fault codes. The issue is often attributed to specific lubrication characteristics under certain operating conditions.
Volkswagen
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen BWF is a 1,984 cc inline‑four naturally aspirated petrol engine engineered for performance-oriented compact cars (2005-2010). It combines DOHC with variable valve timing to deliver responsive power and smooth operation. Designed to meet Euro 4 standards, it offers a balance of driving dynamics and everyday usability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,984 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 82.5 mm × 92.8 mm | |
| Power output | 110 kW (150 PS) @ 6,000 rpm | |
| Torque | 200 Nm @ 3,500 rpm | |
| Fuel system | Sequential multi-point fuel injection | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven (maintenance-free design) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
| Dry weight | Not Available |
The naturally aspirated design provides linear power delivery ideal for responsive handling but requires premium unleaded fuel (RON 95+) for optimal performance and to prevent knocking. VW 502 00/504 00 specification oil is critical for protecting the variable valve timing components. The primary documented reliability concern is wear on the intake camshaft follower for the VVT system, addressed in Service Bulletin 2028062. Regular oil changes and using the correct specification are paramount for longevity. The maintenance-free timing chain design eliminates scheduled replacement but should still be inspected if unusual noises occur.
Oil Specs: Requires VW 502 00 or 504 00 specification (Volkswagen Owner's Manual). ACEA A3/B4 is the minimum acceptable standard.
Emissions: Euro 4 certification applies to all production years (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under DIN 70020 standards (Volkswagen Group PT-2010). Output is optimized for 95 RON fuel.
Volkswagen Service Technical Bulletin 2028062
Volkswagen Self-Study Programme (SSP) 323: 2.0L FSI Engine
VCA Type Approval Database (VCA/EMS/5678)
The Volkswagen BWF was used across Volkswagen's A5 platform with transverse mounting. This engine received platform-specific adaptations-unique engine mounts and intake manifolds for the Golf and Jetta-creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the gearbox flange, on a flat machined surface (Volkswagen SSP 323). The engine code is also listed on the vehicle data sticker, typically found in the spare wheel well or on the driver's door jamb. Visually, the BWF can be identified by its black plastic intake manifold and the "2.0 FSI" badge on the engine cover. It is distinct from turbocharged FSI engines (like the CCTA) by the absence of a turbocharger and associated piping. Ensure parts compatibility by cross-referencing the engine code with the ETKA catalogue, as other 2.0L FSI variants (e.g., AZJ, BUB) exist with different power outputs and calibrations.
The BWF's primary documented reliability concern is wear on the variable valve timing (VVT) intake camshaft follower, with incidence linked to oil quality and extended service intervals. Volkswagen service bulletins detail the repair procedure, while adherence to strict maintenance schedules is the key preventative measure. Neglecting oil changes or using incorrect oil specifications significantly increases the risk of this failure.
Analysis derived from Volkswagen technical bulletins (2005-2010) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BWF.
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VOLKSWAGEN 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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VCA Certification Portal
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