The Volkswagen BDN is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2008 and 2015. It features a dual overhead camshaft (DOHC) layout with variable valve timing (VVT) and direct fuel injection (TSI), delivering outputs from 147 kW (200 PS) to 155 kW (211 PS) and peak torque of 280–350 Nm for strong, responsive acceleration.
Fitted primarily to the Mk6 Golf GTI, Scirocco, and Eos, the BDN was engineered for enthusiasts seeking a blend of daily drivability and spirited performance. Emissions compliance for its production period was achieved through precise engine management and catalytic conversion, enabling adherence to Euro 5 standards across its primary markets.
One documented concern is potential failure of the timing chain tensioner, which can lead to chain rattle or, in severe cases, catastrophic engine damage. This issue, referenced in Volkswagen Group Service Technical Bulletin 2035891/2, is often linked to extended oil change intervals or the use of incorrect oil viscosity. Volkswagen subsequently issued revised tensioner components for affected vehicles.
Volkswagen
Production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/6789).
The Volkswagen BDN is a 1,984 cc inline‑four turbocharged petrol engineered for sporty compact models (2008-2015). It combines gasoline direct injection (TSI) with a single turbocharger to deliver strong, linear power and responsive throttle feel. Designed to meet Euro 5 standards, it balances high 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 | 147–155 kW (200–211 PS) | |
| Torque | 280–350 Nm @ 1,700–5,000 rpm | |
| Fuel system | Direct injection (TSI), high-pressure fuel pump | |
| Emissions standard | Euro 5 | |
| Compression ratio | 9.6:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbo (IHI or Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
| Dry weight | 157 kg |
The turbocharged TSI design provides strong, accessible power ideal for overtaking but requires strict adherence to 15,000 km oil change intervals using VW 502 00/504 00 specification to prevent timing chain tensioner wear and turbo bearing failure. Extended oil intervals or incorrect viscosity are the primary causes of premature tensioner failure, as highlighted in Service Bulletin 2035891/2. The direct injection system is prone to intake valve carbon buildup; periodic cleaning or using Top Tier fuel is recommended. Pre-emptive replacement of the tensioner with the revised part is advised for high-mileage vehicles.
Oil Specs: Requires VW 502 00 or 504 00 (5W-40) specification (Volkswagen Technical Bulletin 2035891/2).
Emissions: Euro 5 certification applies to all 2008–2015 BDN models (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under SAE J1349 standards. Output varies by model application (Volkswagen SSP 424).
Volkswagen Self-Study Programme (SSP): 424
Volkswagen Group Technical Documentation (ETKA): 06H 103 011
VCA Type Approval Database (VCA/EMS/6789)
The Volkswagen BDN was used across Volkswagen's A5 platform with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Scirocco and specific ECU mappings for the Eos-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 424). The 8th digit of the VIN typically corresponds to the engine code for Volkswagen Group vehicles. Visually, the BDN can be identified by its black plastic valve cover with "TSI" embossed on it and the front-mounted timing chain cover. Critical differentiation from the similar CCTA engine: The BDN uses a Bosch MED17.1.6 ECU, while the CCTA uses an MED9.5.10. Service parts, particularly for the timing system, are often specific to the BDN and not interchangeable with other 2.0 TSI variants without verification (Volkswagen Technical Bulletin 2035891/2).
The BDN's primary reliability risk is timing chain tensioner failure, with elevated incidence in vehicles subjected to extended oil change intervals. Volkswagen internal service data indicated a significant number of tensioner replacements under warranty, while owner reports frequently cite a distinctive rattle on cold start. Extended use of oil not meeting VW 502 00/504 00 specifications or exceeding service intervals accelerates wear, making adherence to the correct oil and schedule critical.
Analysis derived from Volkswagen technical bulletins (2009-2016) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BDN.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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