The Audi CYRB is a 1,968 cc, inline — four turbo — diesel engine produced between 2015 and 2023. It belongs to the Volkswagen Group's EA288 evo engine family, engineered for enhanced efficiency, reduced emissions, and improved refinement. Featuring common rail direct injection, variable geometry turbocharging (VGT), and DOHC valvetrain, it delivers 110 kW (150 PS) and 340 Nm of torque, with optimized low — end responsiveness and thermal efficiency.
Fitted to models inc…
Production years 2015–2020 meet Euro 6c standards; 2020–2023 models comply with Euro 6d (VCA UK Type Approval #VCA/EMS/9012).
The Audi CYRB is a 1,968 cc inline-four turbo-diesel engineered for mid-size platforms (2015–2023). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-RPM torque and smooth highway cruising. Designed to meet evolving Euro 6 emissions standards, it balances real-world performance 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 | 110 kW (150 PS) @ 3,500–4,000 rpm | |
Torque | 340 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 2,000 bar) | |
Emissions standard | Euro 6c (pre-2020), Euro 6d (2020–2023) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Variable geometry turbo (Garrett GT1749V) | |
Timing system | Timing belt (interval: 150,000 km or 5 years) | |
Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
Dry weight | 148 kg |
The Audi CYRB was used across Audi's 8V/B9/C8 platforms with longitudinal mounting and shared within the Volkswagen Group for transverse applications. This engine received platform-specific calibrations-fuel mapping in the A3 and enhanced cooling in the Q5-and from 2020, certain A4 B9 facelift models adopted revised EGR routing, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CYRB's primary reliability risk is fuel injector coking, with elevated incidence in mixed urban/short-trip use. Internal Audi quality reports from 2019 indicated a measurable share of pre-2020 units requiring injector cleaning before 140,000 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 injector and EGR stress, making fuel quality and maintenance adherence critical.
Analysis derived from Audi technical bulletins (2015–2023) and UK DVSA failure statistics (2018–2024). Repair procedures should follow manufacturer guidelines.
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The CYRB is generally reliable when maintained properly, though pre-2020 models show higher incidence of injector 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 fuel injector coking, EGR valve/cooling clogs, timing belt failure, and oil leaks from valve cover and turbo seals. These are covered in Audi service bulletins, particularly TSB 2018-37 (injectors) and SIB 23 10 12 (timing belt). Regular maintenance prevents most failures.
The CYRB 2.0 TDI was used in the A3 (8V), A4 (B9), A6 (C8), and Q5 (FY) from 2015 to 2023. It was also shared across the Volkswagen Group in Tiguan and Škoda Kodiaq models. All applications produce 110 kW (150 PS) and 340 Nm, meeting Euro 6c or Euro 6d emissions standards depending on model year.
Yes. The CYRB responds well to ECU remapping, with stage 1 tunes typically adding +25–35 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 evo fuel system limits to avoid injector strain.
Excellent. In an A4 2.0 TDI (150 PS), real-world consumption averages ~5.6 L/100 km (city) and ~4.3 L/100 km (highway), or about 51 mpg UK combined. Mixed driving typically yields 48–56 mpg (UK). Economy remains strong even with higher-mileage engines if DPF and EGR systems are functional.
Yes. The CYRB 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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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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DVLA: Engine Changes & MoT
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Vehicle Certification Agency (VCA)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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