The Volkswagen BHL is a 2,459 cc, VR6 petrol engine produced between 2006 and 2010. It features a unique 15 — degree narrow — angle V6 layout with double overhead camshafts and multi — point fuel injection, delivering 125 kW (170 PS) and 240 Nm of torque for smooth, linear power delivery.
Fitted to models such as the Eos, Passat B6, and Tiguan, the BHL was engineered for drivers seeking a refined, torquey alternative to four — cylinder engines. Emissions compliance for its produ…
Volkswagen
Production years 2006–2010 meet Euro 4 standards .
The Volkswagen BHL is a 2,459 cc VR6 petrol engineered for mid-size sedans and SUVs (2006-2010). It combines multi-point fuel injection with a compact narrow-angle V6 design to deliver smooth, linear power and a distinctive engine note. Designed to meet Euro 4 standards, it balances refinement with adequate performance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,459 cc | |
Fuel type | Petrol | |
Configuration | VR6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 82.0 mm × 77.4 mm | |
Power output | 125 kW (170 PS) | |
Torque | 240 Nm @ 3,000 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 | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 168 kg |
The Volkswagen BHL was used across Volkswagen's B6 and 5N platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Tiguan and specific ECU mappings for the Eos-creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The BHL is generally a smooth and reliable engine, known for its durability. Its main weaknesses are the intake manifold flap motor and ignition coils. Addressing these with revised parts and adhering to strict maintenance, particularly oil changes, can result in a very long-lasting engine.
The most frequent issues are intake manifold flap motor failure, ignition coil failure, coolant temperature sensor faults, and oil leaks from the valve cover gasket. These are well-documented in Volkswagen service bulletins, with the flap motor being the most characteristic issue for this engine.
The BHL 2.5 VR6 was primarily used in the Passat B6 (2006-2010), Eos (2006-2010), and Tiguan (2008-2010). It was offered as a smooth, torquey alternative to the four-cylinder engines in these models.
Yes, but the gains are modest due to its naturally aspirated design. ECU remapping can yield around 10-15% more power, taking it to ~185-195 PS. The VR6's robust internals can handle this, but significant power increases require forced induction, which is complex and expensive.
Moderate. In a Passat 2.5 VR6, expect around 11.0 L/100km in the city and 7.0 L/100km on the highway, translating to roughly 25-30 mpg UK combined. Real-world economy is heavily dependent on driving style due to the engine's size and power.
Yes. The BHL is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic engine damage. Fortunately, the chain is front-mounted and generally very reliable if maintained properly.
Volkswagen mandates oil meeting the VW 502 00 specification, typically a 5W-40 synthetic. This is crucial for protecting the engine and ensuring longevity. Using the correct oil is essential for the BHL's smooth operation.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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
Type-approval guidance and documentation.
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