The Volkswagen BFS 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 125 kW (170 PS) and 240 Nm of torque. The high-pressure fuel pump is critical for maintaining precise injection.
Fitted primarily to the Mk5 Golf, Jetta, and Passat, the BFS was engineered for responsive daily driving with strong mid-range pull. 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 premature wear of the high-pressure fuel pump cam follower, which can lead to fuel pressure issues and potential engine damage. This issue, referenced in Volkswagen Service Technical Bulletin 2028808, is often linked to fuel quality and lubrication. Later production runs incorporated revised cam follower materials for improved durability.
Volkswagen
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5681).
The Volkswagen BFS is a 1,984 cc inline‑four turbocharged petrol engineered for mid-size sedans and hatchbacks (2005-2010). It combines gasoline direct injection (TSI) with a single turbocharger to deliver strong mid-range torque and responsive throttle. Designed to meet Euro 4 standards, it balances everyday drivability 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 | 125 kW (170 PS) | |
| Torque | 240 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 cam follower wear and pump 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 BFS engines (VCA Type Approval #VCA/EMS/5681).
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 100 017
VCA Type Approval Database (VCA/EMS/5681)
The Volkswagen BFS was used across Volkswagen's Mk5 platform with transverse mounting. This engine received no significant platform-specific adaptations across its applications, ensuring broad parts interchangeability. 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 324). The 8th digit of the VIN is typically 'F' for BFS-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 higher-output BCQ engine: BFS produces 170 PS, while BCQ produces 200 PS; internal components like pistons and turbochargers differ.
The BFS's primary reliability risk is high-pressure fuel pump cam follower wear, 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 a critical preventative maintenance item. Using premium fuel and adhering to service schedules make pump and follower longevity critical.
Analysis derived from Volkswagen technical bulletins (2005-2011) and aggregated owner-reported failure data (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BFS.
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Regulation (EC) No 715/2007
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