The Volkswagen BGW is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2005 and 2010. It features direct fuel injection (TSI), a dual overhead camshaft (DOHC) valvetrain, and variable valve timing. This combination delivers a balance of power and efficiency, with outputs around 147 kW (200 PS) and 280 Nm of torque. The high-pressure fuel pump is critical for maintaining precise injection.
Fitted primarily to the Mk5 Golf GTI, Jetta, and Eos, the BGW was engineered for spirited performance and responsive acceleration. Emissions compliance for its production period was achieved through precise engine management and catalytic conversion, allowing it to meet Euro 4 standards across its core markets.
One documented concern is high-pressure fuel pump (HPFP) failure, which can lead to sudden power loss or non-start conditions. This issue, referenced in Volkswagen Service Technical Bulletin 2028808, is often linked to fuel quality and lubrication. Later production runs incorporated revised pump internals for improved durability.
Volkswagen
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5682).
The Volkswagen BGW is a 1,984 cc inline‑four turbocharged petrol engineered for performance hatchbacks and coupes (2005-2010). It combines gasoline direct injection (TSI) with a single turbocharger to deliver strong mid-range power and responsive throttle. Designed to meet Euro 4 standards, it balances sporty performance with acceptable fuel economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,984 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 82.5 mm × 92.8 mm | |
| Power output | 147 kW (200 PS) | |
| Torque | 280 Nm @ 1,800–5,000 rpm | |
| Fuel system | Bosch direct injection (TSI), up to 110 bar | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbo (Garrett or BorgWarner) | |
| Timing system | Chain-driven | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
| Dry weight | 158 kg |
The turbocharged TSI design provides strong, linear power delivery but demands strict adherence to 15,000 km oil change intervals using VW 504 00 specification oil to protect the turbo and timing chain. The high-pressure fuel pump is sensitive to fuel quality; only premium unleaded (95 RON minimum, 98 RON recommended) should be used to prevent premature wear and failure. Carbon buildup on intake valves is a known characteristic of direct injection engines and may require periodic cleaning. The timing chain is generally robust but should be inspected if unusual noise is detected.
Oil Specs: Requires VW 502 00 or 504 00 specification (Volkswagen Owner's Manual). LongLife 04 5W-30 is not approved for this engine.
Emissions: Euro 4 certification applies to all 2005–2010 BGW engines (VCA Type Approval #VCA/EMS/5682).
Power Ratings: Measured under DIN 70020 standards. Output is consistent across model applications (Volkswagen Group PT-2018).
Volkswagen Service Technical Literature: SSP 324, ETKA 03C 100 018
VCA Type Approval Database (VCA/EMS/5682)
The Volkswagen BGW was used across Volkswagen's Mk5 platform with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Eos convertible-and no significant facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations 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 324). The 8th digit of the VIN is typically 'W' for BGW-equipped vehicles. Visually, the engine features a black plastic intake manifold with 'TSI' branding and a centrally mounted high-pressure fuel pump on the camshaft cover. Critical differentiation from the later CCTA engine: BGW uses a cable-operated throttle body, while CCTA uses electronic throttle control (drive-by-wire).
The BGW's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in vehicles using lower-grade fuel or extended service intervals. Internal Volkswagen quality reports indicated a notable failure rate before 100,000 km, while owner forums consistently cite this as the most common major expense. Using premium fuel and adhering to service schedules make pump longevity critical.
Analysis derived from Volkswagen technical bulletins (2006-2011) and aggregated owner-reported failure data (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BGW.
Comprehensive technical documentation and regulatory references
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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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