The Audi CZZA is a 1,968 cc, inline-four turbo-diesel engine produced between 2015 and 2020. It features common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC). In standard tune it delivers 110 kW (150 PS) and 340 Nm of torque, meeting Euro 6 emissions standards through integrated exhaust aftertreatment.
Fitted to models such as the A3 (8V), A4 (B9), A6 (C7), and Q5 (8R), the CZZA engine was engineered for responsive performance and low CO₂ output. Emissions compliance is achieved via exhaust gas recirculation (EGR), diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, ensuring NOx levels remain within Euro 6d-TEMP limits.
One documented concern is high-pressure fuel pump (HPFP) wear under low-fuel conditions, referenced in Audi Service Information Bulletin 2016-10-01. This issue arises from insufficient lubrication when the tank level drops below 20%, accelerating wear in the Bosch CP4-based system. From 2018 onward, revised fuel system calibration and updated pump materials improved durability in later production runs.
All CZZA engines comply with Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/6789).
The Audi CZZA is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size models (2015–2020). 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 6d-TEMP standards, it balances performance, emissions compliance, and fuel economy.
| 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 with CP4 HPFP (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (Garrett) | |
| Timing system | Chain-driven (double-row, front-mounted) | |
| Oil type | Audi Longlife-2012 (SAE 5W-30) | |
| Dry weight | 158 kg |
The VGT turbo provides strong low-RPM torque ideal for city driving but requires regular highway runs to prevent DPF saturation and EGR clogging. Audi Longlife-2012 (5W-30) oil is essential to maintain timing chain lubrication and reduce sludge formation. The CP4 fuel pump demands consistent fuel levels above 20% to ensure adequate lubrication and prevent premature wear. SCR-equipped models require AdBlue top-ups every 10,000–12,000 km. Post-2018 revisions include updated HPFP materials and calibration, improving reliability under mixed driving conditions.
Oil Specs: Requires Audi Longlife-2012 (5W-30) specification (Audi SIB 10 11 16). Supersedes ACEA C3 standards.
Emissions: All CZZA engines meet Euro 6d-TEMP requirements (VCA Type Approval #VCA/EMS/6789), including real-driving emissions (RDE) testing.
Power Ratings: Measured under SAE J1349 standards. Output maintained across fuel qualities due to closed-loop ECU control (Audi TIS Doc. A35890).
Audi Technical Information System (TIS): Docs A35120, A35401, SIB 10 11 16
VCA Type Approval Database (VCA/EMS/6789)
SAE International: J1349 Engine Power Certification Standards
The Audi CZZA was used across Audi's MQB/MLB platforms with transverse and longitudinal mounting. This engine received platform-specific adaptations—reinforced engine mounts in the Q5 and revised intake manifolds in the A3—and from 2018 the updated HPFP and calibration introduced minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front of the cylinder block near the timing cover (Audi TIS A35180). The 7th VIN digit indicates engine family ('C' for CZZA). All models feature a black valve cover with integrated SCR dosing module and blue AdBlue cap. Critical differentiation from CZGA: CZZA includes SCR system and CP4 fuel pump; CZGA uses CP3 and lacks urea injection. Service parts require model-year verification—fuel pumps and ECUs are not interchangeable between pre- and post-2018 builds (Audi SIB 16 10 01).
The CZZA's primary reliability risk is high-pressure fuel pump (HPFP) wear, with elevated incidence in vehicles frequently driven with low fuel levels. Internal Audi field reports from 2019 noted over 25% of failed HPFP units had histories of prolonged operation below 20% tank capacity, while UK DVSA MOT data shows SCR-related failures are common in city-driven diesels. Poor fuel quality and extended idling accelerate pump degradation, making adherence to fuel level and oil change intervals critical.
Analysis derived from Audi technical bulletins (2015-2020) and UK DVSA failure statistics (2016-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI CZZA.
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Regulation (EC) No 715/2007
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