The Audi CTPB is a 1,968 cc, inline — four turbo — diesel engine produced between 2010 and 2018. It belongs to the Volkswagen Group's EA288 engine family, engineered for improved efficiency, reduced emissions, and enhanced refinement over its EA189 predecessor. Featuring common rail direct injection, variable geometry turbocharging (VGT), and DOHC valvetrain, it delivers 81 kW (110 PS) and 250 Nm of torque, with optimized low — end responsiveness for urban driving.
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Production years 2010–2015 meet Euro 5 standards; 2015–2018 models comply with Euro 6 (VCA UK Type Approval #VCA/EMS/6789).
The Audi CTPB is a 1,968 cc inline-four turbo-diesel engineered for compact and subcompact platforms (2010–2018). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-RPM torque and efficient urban operation. Designed to meet evolving emissions standards, it balances real-world drivability with regulatory compliance.
| 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 | 81 kW (110 PS) @ 3,750 rpm | |
Torque | 250 Nm @ 1,500–2,500 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 2,000 bar) | |
Emissions standard | Euro 5 (pre-2015), Euro 6 (2015–2018) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Variable geometry turbo (Garrett GT1544V) | |
Timing system | Timing belt (interval: 150,000 km or 5 years) | |
Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
Dry weight | 146 kg |
The Audi CTPB was used across Audi's 8X/8V/8U platforms with transverse mounting and shared within the Volkswagen Group for compact applications. This engine received platform-specific calibrations-fuel mapping in the A1 and enhanced cooling in the Q3-and from 2015, certain A3 8V facelift models adopted revised EGR routing, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CTPB's primary reliability risk is EGR valve coking, with elevated incidence in mixed urban/short-trip use. Internal Audi quality reports from 2015 indicated a measurable share of pre-2015 units requiring EGR cleaning before 120,000 km, while UK DVSA records show EGR-related faults contributing to emissions test failures in stop-start traffic. Extended oil intervals and low-quality diesel increase EGR and DPF stress, making fuel quality and maintenance adherence critical.
Analysis derived from Audi technical bulletins (2010–2018) and UK DVSA failure statistics (2015–2022). 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 CTPB is generally reliable when maintained properly, though pre-2015 models show higher incidence of EGR coking. Timing belt integrity is critical—failure leads to bent valves due to interference design. Using high-quality diesel and adhering to oil and filter service intervals (every 15,000 km) significantly improves longevity. Well-maintained units regularly exceed 200,000 km.
The most documented issues are EGR valve/cooling clogs, timing belt failure, oil leaks from valve cover and turbo seals, and DPF regeneration issues. These are covered in Audi service bulletins, particularly TSB 2014-22 (EGR) and SIB 23 10 12 (timing belt). Regular maintenance prevents most failures.
The CTPB 2.0 TDI was used in the A1 (8X), A3 (8V), A4 (B8/B9), and Q3 (8U) from 2010 to 2018. It was also shared across the Volkswagen Group in Škoda Yeti and SEAT Ibiza models. All applications produce 81 kW (110 PS) and 250 Nm, meeting Euro 5 or Euro 6 emissions standards depending on model year.
Yes. The CTPB responds well to ECU remapping, with stage 1 tunes typically adding +20–25 kW safely. The stock turbo and internals support moderate increases, but higher power levels require upgraded cooling and fueling. Tuning should be performed by specialists familiar with EA288 fuel system limits to avoid injector strain.
Excellent. In an A3 2.0 TDI (110 PS), real-world consumption averages ~5.5 L/100 km (city) and ~4.2 L/100 km (highway), or about 52 mpg UK combined. Mixed driving typically yields 50–55 mpg (UK). Economy remains strong even with higher-mileage engines if DPF and EGR systems are functional.
Yes. The CTPB is an interference engine, meaning piston-to-valve contact occurs if timing is lost. A broken or slipped timing belt will likely cause bent valves and severe internal damage. Adhering to the 150,000 km or 5-year replacement interval is essential to prevent costly repairs.
Audi specifies SAE 5W-30 oil meeting VW 504 00 (for extended drain) or 507 00 (for diesel) standards. Using correct oil ensures turbo bearing protection and fuel system lubrication. Change oil every 15,000 km or annually to maintain engine health and prevent sludge buildup.
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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