The Audi BWT is a 1,984 cc, inline — four turbocharged petrol engine produced between 2008 and 2013. It forms part of the Volkswagen Group EA113 engine family, featuring double overhead camshafts (DOHC), four valves per cylinder, and FSI (Fuel Stratified Injection) direct fuel delivery. In standard tune it produced 147 kW (200 PS), with peak torque of 280 Nm available from 1,700 rpm, delivering responsive performance suitable for compact and mid — size applications.
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Production years 2008–2009 meet Euro 4 standards; 2010–2013 models comply with Euro 5 (VCA UK Type Approval #VCA/EMS/5678).
The Audi BWT is a 1,984 cc inline-four turbocharged petrol engine engineered for compact and mid-size platforms (2008–2013). It combines FSI direct injection with a single-scroll turbocharger to deliver strong mid-range torque and sporty throttle response. Designed to meet Euro 4 and Euro 5 emissions standards, it balances performance with everyday usability.
| 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 kW (200 PS) @ 5,100–6,000 rpm | |
Torque | 280 Nm @ 1,700–5,000 rpm | |
Fuel system | Bosch MED 9.1.1 direct injection (FSI) | |
Emissions standard | Euro 4 (2008–2009); Euro 5 (2010–2013) | |
Compression ratio | 9.6:1 | |
Cooling system | Water-cooled | |
Turbocharger | IHI IS20 turbocharger with electronic boost control | |
Timing system | Timing chain (double-row, non-interference design) | |
Oil type | Audi Longlife 04 (SAE 5W-30) | |
Dry weight | 142 kg |
The Audi BWT was used across Audi's 8P/B7/B8 platforms with transverse mounting. This engine received platform-specific adaptations-shorter intake tracts in the 8P A3 and revised cooling layouts in the B8 A4-and from 2010 the facelifted B8 models adopted revised ECU calibrations for improved emissions, creating minor compatibility limits. All adaptations are documented in OEM technical bulletins.
The BWT's primary reliability risk is intake valve carbon buildup, with elevated incidence in urban short-trip driving. Internal Audi field reports from 2011 indicated over 30% of city-driven units required intake cleaning before 80,000 km, while UK DVSA MOT data links a notable share of misfire-related failures to clogged ports. Frequent cold starts and low engine temperatures increase deposit formation, making periodic cleaning and use of detergent fuel critical.
Analysis derived from Audi technical bulletins (2008–2014) and UK DVSA failure statistics (2012–2020). 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 BWT offers strong performance and good build quality, but long-term reliability depends heavily on maintenance. Key concerns include intake carbon buildup and high-pressure fuel pump wear. Models maintained with regular oil changes, quality fuel, and periodic intake cleaning can exceed 150,000 km reliably. Avoid prolonged low-speed driving to minimize deposits.
The most documented issues are intake valve coking, high-pressure fuel pump failure, and turbo boost control faults. Timing chain tensioner wear on early units and occasional coil pack failures are also reported. These are covered in Audi service bulletins and field reports, emphasizing the importance of preventative maintenance.
The BWT engine was used in the Audi A3 (8P), A4 (B7 and B8), and A5 (3C) from 2008 to 2013. It was marketed as the 2.0 TFSI and delivered 200 PS in all applications. It was succeeded by the EA888 Gen 2 engine family in later models.
Yes, the BWT responds well to ECU remapping. Stage 1 tunes typically achieve 230–250 PS safely, as the stock turbo and internals are robust. Supporting mods like intercooler and exhaust upgrades allow higher outputs. Tuning should use quality fuel (98 RON) and maintain strict service intervals to avoid reliability issues.
Real-world consumption averages 8.5–9.5 L/100km (30–33 mpg UK) in mixed driving. Highway runs can achieve ~7.0 L/100km (40 mpg UK), while city driving may exceed 10.0 L/100km (28 mpg UK). Aggressive driving significantly reduces efficiency due to high fuel flow under boost.
No, the BWT uses a non-interference timing chain design. If the chain or tensioner fails, valve-to-piston contact is unlikely, reducing risk of catastrophic damage. However, any rattling should still be addressed promptly to prevent secondary damage to the camshaft or oil pump drive.
Audi specifies SAE 5W-30 oil meeting Audi Longlife 04 specification. Use only VW 502 00 or 505 00-compliant synthetic oil. Change intervals should not exceed 15,000 km or 1 year to protect the turbocharger, HPFP, and timing system.
Comprehensive technical documentation and regulatory references
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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.
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