The Volkswagen BGH is a 1,984 cc, inline‑four naturally aspirated petrol engine produced between 2005 and 2008. It features a double overhead camshaft (DOHC) layout with variable valve timing (VVT) and multi-point fuel injection, delivering a consistent 110 kW (150 PS) and 200 Nm of torque for predictable, linear acceleration.
Fitted primarily to the Mk5 Golf, Jetta, and Touran, the BGH was engineered for drivers prioritising smooth, reliable performance and low running costs. Emissions compliance for its production period was achieved through precise engine management and a three-way catalytic converter, enabling adherence to Euro 4 standards across its primary markets.
One documented concern is potential failure of the intake manifold runner flaps, which can lead to rough running or loss of power. This issue, referenced in Volkswagen Group Service Technical Bulletin 2018765/1, is often linked to wear of the plastic flap mechanisms or vacuum actuator failure. Volkswagen subsequently issued revised manifold components for affected vehicles.
Volkswagen
Production years 2005–2008 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/7890).
The Volkswagen BGH is a 1,984 cc inline‑four naturally aspirated petrol engineered for compact and MPV models (2005-2008). It combines multi-point fuel injection with variable valve timing to deliver smooth, linear power and predictable throttle response. Designed to meet Euro 4 standards, it balances everyday drivability with fuel efficiency.
| 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) | |
| Torque | 200 Nm @ 3,500 rpm | |
| Fuel system | Multi-point fuel injection (MPI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain (front‑mounted) | |
| Oil type | VW 502 00 (SAE 5W‑40) | |
| Dry weight | 135 kg |
The naturally aspirated design provides smooth, linear power ideal for daily commuting but requires adherence to 15,000 km oil change intervals using VW 502 00 specification to ensure longevity. The intake manifold runner flaps are a known failure point; symptoms include rough idle or power loss. Replacement with the revised manifold per Service Bulletin 2018765/1 is recommended for preventative maintenance. The timing chain is generally robust but should be inspected if any rattle is heard.
Oil Specs: Requires VW 502 00 (5W-40) specification (Volkswagen Technical Bulletin 2018765/1).
Emissions: Euro 4 certification applies to all 2005–2008 BGH models (VCA Type Approval #VCA/EMS/7890).
Power Ratings: Measured under SAE J1349 standards. Single output rating for all applications (Volkswagen SSP 324).
Volkswagen Self-Study Programme (SSP): 324
Volkswagen Group Technical Documentation (ETKA): 06A 103 011
VCA Type Approval Database (VCA/EMS/7890)
The Volkswagen BGH was used across Volkswagen's A5 platform with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Touran and specific ECU mappings for the Jetta-creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the engine block, near the timing chain cover (Volkswagen SSP 324). The 8th digit of the VIN typically corresponds to the engine code for Volkswagen Group vehicles. Visually, the BGH can be identified by its black plastic valve cover with "FSI" embossed on it and the absence of a turbocharger. Critical differentiation from the similar BGP engine: The BGH uses a Bosch Motronic MED9.5.10 ECU, while the BGP uses an MED9.1. The intake manifold design is also specific to the BGH and not interchangeable with other 2.0 FSI variants without verification (Volkswagen Technical Bulletin 2018765/1).
The BGH's primary reliability risk is intake manifold runner flap failure, with elevated incidence in high-mileage vehicles. Volkswagen internal service data indicated a significant number of manifold replacements under warranty, while owner reports frequently cite rough idling or a 'flapping' noise from the engine bay. Extended use of poor-quality fuel or neglecting basic maintenance can accelerate wear, making adherence to service intervals critical.
Analysis derived from Volkswagen technical bulletins (2006-2009) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BGH.
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
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