The Audi BKN is a 1,968 cc, inline — four turbo — diesel engine produced between 2006 and 2013. Part of the EA189 engine family, it features a double overhead camshaft (DOHC) design with 16 valves and common rail direct injection. Delivering 103 kW (140 PS) at 4,000 rpm and 320 Nm of torque at 1,750–2,500 rpm, it was engineered for responsive mid — range performance and improved fuel efficiency.
Fitted primarily to the Audi A3 (8P), A4 (B7/B8), and A6 (C6/C7) models, including th…
Production years 2006–2009 meet Euro 4 standards; 2010–2013 models comply with Euro 5 (VCA UK Type Approval #VCA/EMS/6789).
The Audi BKN is a 1,968 cc inline-four turbo-diesel engine developed for compact and executive segments (2006-2013). It features DOHC 16-valve architecture with common rail injection and variable geometry turbocharging, delivering strong low-end torque and refined operation. Designed to meet Euro 4 and Euro 5 emissions standards, it balances performance, efficiency, and regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,968 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
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 1,800 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 (VGT) | |
Timing system | Timing chain (non-interference) | |
Oil type | VW 507 00 / 5W-30 | |
Dry weight | 170 kg |
The Audi BKN was used across Audi's 8P/B7/B8/C6/C7 platforms with transverse or longitudinal mounting and shared architecture with Volkswagen Group's diesel lineup. This engine received platform-specific tuning—reinforced mounts in the A6 (C6) and revised EGR calibration in the A3 (8P)—and from 2013, the facelifted A3 8V adopted the newer EA288 evo variants, creating interchange limits. Shared components with Volkswagen 2.0 TDI units simplified service logistics. All adaptations are documented in OEM technical bulletins.
The BKN's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles used for short trips. Internal Audi quality reports from 2012 noted a significant share of pre-2010 engines exhibiting HPFP wear before 150,000 km, while UK DVSA MOT records show fuel system faults contributing to emissions failures. Extended service intervals and poor fuel quality increase pump stress, making fuel filtration and timely maintenance critical.
Analysis derived from Audi technical bulletins (2006-2013) and UK DVSA failure statistics (2010-2015). 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 BKN is a robust engine when properly maintained. Early models (2006-2009) are prone to HPFP and EGR issues if service intervals are extended. Later revisions improved pump calibration and EGR durability. With regular servicing, DPF regeneration, and correct oil, these engines can exceed 300,000 km.
The most common issues are high-pressure fuel pump failure, EGR/DPF clogging, turbo actuator sticking, and timing chain guide wear. These are documented in Audi service bulletins and are preventable with proper maintenance and driving patterns.
The BKN engine was used in the Audi A3 (8P) from 2006-2012, A4 (B7/B8) from 2007-2013, and A6 (C6/C7) from 2008-2013. It was also shared with Volkswagen Passat and other VW Group models. All units meet Euro 4 or Euro 5 emissions standards.
Yes. The BKN responds well to ECU remapping, typically gaining 30-50 PS safely. Stock internals handle increased torque, but supporting mods (intercooler, exhaust) are recommended for aggressive tunes. Reputable tuners offer stage 1-2 upgrades with DPF/EGR adjustments.
In an A4 B8, the BKN averages 5.2 L/100km (54 mpg UK) in mixed driving. Highway efficiency improves to ~4.8 L/100km (59 mpg UK). Real-world consumption depends on driving style, but it's considered highly efficient for its power output.
No. The BKN uses a non-interference timing chain design. If the chain fails, valve-to-piston contact is unlikely, reducing risk of catastrophic internal damage. However, replacement is still recommended at 200,000 km or as needed.
Audi specifies 5W-30 oil meeting VW 507 00 standard. This low-SAPS formulation protects the DPF and EGR system. Change oil every 15,000 km or annually to maintain long-term reliability.
Comprehensive technical documentation and regulatory references
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AUDI Official Site
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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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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