The Volkswagen BDC is a 1,984 cc, inline‑four petrol engine produced between 2005 and 2010. It features a dual overhead camshaft (DOHC) design with variable valve timing (VVT) on the intake cam, delivering a balance of power and efficiency. Output ranges from 110 kW (150 PS) to 125 kW (170 PS), with peak torque figures of 240–280 Nm, providing responsive performance for its class.
Fitted to models including the Mk5 Golf GT, Jetta, and Eos, the BDC was engineered for drivers seeking a blend of sporty character and everyday refinement. Emissions compliance for its production run was achieved through precise electronic throttle control and catalytic converter technology, meeting Euro 4 standards.
One documented concern involves premature wear of the intake camshaft adjuster, potentially leading to timing issues and reduced performance. This is addressed in Volkswagen Service Technical Bulletin 2033060. The issue stems from internal component wear under specific thermal cycles. Later production runs incorporated revised adjuster units.
Volkswagen
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen BDC is a 1,984 cc inline‑four petrol engineered for compact and mid‑size models (2005-2010). It combines DOHC architecture with variable valve timing to deliver responsive performance and smooth power delivery. Designed to meet Euro 4 standards, it balances sporty character with everyday drivability.
| 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 | 110–125 kW (150–170 PS) | |
| Torque | 240–280 Nm @ 3,500 rpm | |
| Fuel system | Sequential multi-point injection (MPI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 11.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | N/A | |
| Timing system | Chain-driven (intake cam adjuster prone to wear) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
| Dry weight | 135 kg |
The DOHC with VVT provides smooth, linear power delivery ideal for spirited driving but requires strict adherence to 15,000 km oil change intervals using VW 502 00/504 00 specification oil to prevent cam adjuster wear and timing chain tensioner issues. The high compression ratio demands 95 RON (premium) fuel for optimal performance and to prevent knocking. Intake cam adjuster failure, documented in VW SIB 2033060, can cause rough running; pre-emptive replacement of the revised unit is recommended for high-mileage engines. The timing chain is designed for longevity but inspection is advised after 150,000 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 4 certification applies to all 2005–2010 BDC engines (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under DIN 70020 standards. Peak figures require 95 RON fuel (Volkswagen SSP 324).
Volkswagen Service Technical Literature (SSP 324)
Volkswagen ETKA Parts Catalogue
VCA Type Approval Database (VCA/EMS/5678)
The Volkswagen BDC was used across Volkswagen's A5 platform with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Eos convertible-and no significant facelift revisions affecting core compatibility during its production run. 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 typically corresponds to the engine code for Volkswagen Group vehicles. The BDC can be visually identified by its black plastic intake manifold and the "2.0 FSI" badge on the engine cover. Critical differentiation from the turbocharged BWA engine: The BDC lacks a turbocharger and associated plumbing. Service parts for the camshaft adjuster require verification against the part number revision; units produced before 2007 may need the updated part per VW SIB 2033060.
The BDC's primary reliability risk is intake camshaft adjuster wear, with elevated incidence in high-mileage or poorly maintained examples. Volkswagen internal data indicated a notable service rate for this component before 150,000 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 (2006-2010) and aggregated UK MOT failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BDC.
Comprehensive technical documentation and regulatory references
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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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