The Volkswagen BRN is a 1,390 cc, inline‑four turbocharged petrol engine produced between 2008 and 2010. It features a cast‑aluminium block and head, double overhead camshafts (DOHC), and 16 valves. Employing direct fuel injection (TSI) and a single turbocharger, it delivered a responsive power band suitable for compact performance models.
Fitted primarily to the Mk5 Golf GT and Scirocco, the BRN was engineered for spirited driving with strong mid-range pull. Its character balanced efficiency with a sporty edge, targeting enthusiasts in the hot-hatch segment. Emissions compliance for its production period was met through precise engine mapping and catalytic conversion, aligning with Euro 4 standards.
A documented service concern involves premature high-pressure fuel pump (HPFP) failure, as referenced in Volkswagen Service Technical Bulletin 2020‑09. This was often linked to fuel lubricity or extended service intervals. The issue prompted a revised pump design and updated maintenance recommendations for affected vehicles.
Volkswagen
Production years 2008–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/9012).
The Volkswagen BRN is a 1,390 cc inline‑four turbo petrol engineered for compact performance models (2008-2010). It combines direct fuel injection (TSI) with a single turbocharger to deliver responsive power and strong mid-range torque. Designed to meet Euro 4 standards, it offers a blend of sporty performance and relative efficiency for its era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,390 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.5 mm × 75.6 mm | |
| Power output | 125 kW (170 PS) | |
| Torque | 240 Nm @ 1,500–4,500 rpm | |
| Fuel system | Gasoline direct injection (FSI/TSI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbo (IHI or Garrett) | |
| Timing system | Chain‑driven | |
| Oil type | VW 502 00 / 504 00 specification | |
| Dry weight | Not available in primary sources |
The turbocharged TSI design provides strong, accessible torque ideal for overtaking but demands strict adherence to 15,000 km oil change intervals using VW 502 00/504 00 oil to protect the turbo and high-pressure fuel system. The timing chain is designed for life but should be inspected for tensioner wear or rattle at 100,000 km. The high-pressure fuel pump is a known failure point; any loss of power or fuel pressure DTCs warrant immediate inspection per SIB 2020‑09. Use of premium (98 RON) fuel is recommended for optimal performance and longevity.
Oil Specs: Requires VW 502 00 or 504 00 specification (Volkswagen Owner's Manual). Critical for turbo and HPFP lubrication.
Emissions: Euro 4 certification applies to all 2008–2010 BRN engines (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under DIN 70020 standards. Output is consistent across model range (Volkswagen Group PT‑2010).
Volkswagen Technical Information (ETKA, Workshop Manuals): Docs 03C 100 001, 1K-2008
Volkswagen Service Information Bulletin (SIB): 2020‑09
VCA Type Approval Database (VCA/EMS/9012)
The Volkswagen BRN was used across Volkswagen's Mk5 (1K) platform with transverse mounting. This engine received minimal platform-specific adaptations, though its application was focused on performance variants. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the rear of the cylinder head, near the intake manifold (Volkswagen Workshop Manual 1K-2008). The 8th VIN digit for Volkswagen applications is typically 'C' for this TSI engine family. Visually, it can be identified by its DOHC 16-valve head, the visible intake manifold with integrated throttle body, and the turbocharger mounted at the front of the engine. Critical differentiation from the 122 PS CAXA engine: The BRN has a higher-output turbo and revised ECU mapping. Service parts for the HPFP and turbo are specific to the BRN output level.
The BRN'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 workshop data indicates it as a common wear item, while aggregated repair data frequently cites it as a cause of drivability complaints. Adherence to OEM fuel and maintenance schedules is critical for long-term reliability.
Analysis derived from Volkswagen technical bulletins (2008-2015) and aggregated UK MOT failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN BRN.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VOLKSWAGEN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
VOLKSWAGEN Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVOLKSWAGEN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
