The Audi BES is a 1,968 cc, inline — four turbo — diesel engine produced between 2008 and 2013. It features common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC), delivering 103 kW (140 PS) and 320 Nm of torque. High — pressure fuel precision enables strong low — rpm pulling power for daily driving.
Fitted to models such as the A3 (8P), A4 (B7/B8), and A6 (C6), the BES engine was engineered for balanced performance, fuel econom…
Production years 2008–2009 meet Euro 4 standards; 2010–2013 models comply with Euro 5 depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Audi BES is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size models (2008–2013). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-end torque and efficient highway cruising. Designed to meet Euro 4 and Euro 5 emissions standards, it balances real-world economy with driving comfort.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,968 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (VGT) | |
Bore × stroke | 81.0 mm × 95.5 mm | |
Power output | 103 kW (140 PS) @ 4,000 rpm | |
Torque | 320 Nm @ 1,750–2,500 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 4 (pre-2010); Euro 5 (2010–2013) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1544V) | |
Timing system | Timing belt (service interval: 180,000 km or 10 years) | |
Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
Dry weight | 145 kg |
The Audi BES was used across Audi's 8P/B7/B8/C6 platforms with transverse mounting in front-wheel-drive variants and longitudinal in quattro models. This engine received platform-specific adaptations-shorter intake manifolds in the A3 and revised exhaust routing in the A4 B8-and from 2010 the facelifted A4 B8.5 adopted revised EGR cooling, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The BES's primary reliability risk is high-pressure fuel pump degradation, with elevated incidence in mixed urban driving. Internal Audi quality reports from 2011 noted a significant share of pre-2010 engines requiring HPFP replacement before 150,000 km, while UK DVSA MOT data links EGR-related faults to frequent short trips. Extended idling and low-quality fuel increase soot and pump wear, making fuel quality and service adherence critical.
Analysis derived from Audi technical bulletins (2008–2013) and UK DVSA failure statistics (2014–2022). 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 BES offers solid performance and economy, but pre-2010 models are prone to HPFP issues. Later revisions (2010+) improved fuel system durability. When maintained with proper oil (VW 504 00) and service intervals, it can reliably exceed 250,000 km. Avoid low-quality fuel and delayed timing belt changes to ensure longevity.
Key issues include HPFP wear, EGR valve clogging, timing belt failure if overdue, and oil leaks from valve cover gaskets. These are documented in Audi SIBs 20 10 81 and 20 11 15. Regular maintenance significantly reduces failure risk.
The BES 2.0 TDI 140 PS was used in the A3 (8P), A4 (B7/B8), and A6 (C6) from 2008 to 2013. It was phased out in favour of the CR-engine series. All variants require EN 590 diesel and meet Euro 4 (pre-2010) or Euro 5 (2010+) standards.
Yes. ECU remaps typically add +25–35 kW safely. Stock internals handle increased torque well. Stage 1 tuning is common on A3 and A4 models. Supporting mods like improved cooling and exhaust enhance reliability. Always use quality fuel post-tune.
Excellent. In an A4 2.0 TDI, expect ~5.2 L/100km city, ~4.1 L/100km highway, or ~58 mpg UK combined. Real-world mixed driving yields 50–60 mpg. Economy remains strong even with age if DPF and EGR systems are clean.
Yes. The BES is an interference engine. If the timing belt fails, pistons contact valves, causing catastrophic damage. Adhere strictly to the 180,000 km or 10-year replacement interval. Any belt noise warrants immediate inspection.
Use VW 504 00 or 507 00 (5W-30) specification oil. Change every 15,000 km or annually. This low-SAPS oil protects the turbo, EGR, and DPF while ensuring proper HPFP lubrication under high pressure.
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 AUDI 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.
AUDI 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 officialAUDI 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.