The Audi CZEA is a 1,968 cc, inline — four turbo — diesel engine produced between 2010 and 2018. It forms part of the Volkswagen Group's EA288 engine family, designed for efficiency and durability across compact and mid — size platforms. Featuring common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC), it delivers 103 kW (140 PS) and 320 Nm of torque, with enhanced low — end responsiveness.
Fitted to models including the Aud…
Production years 2010–2014 meet Euro 5 standards; 2015–2018 models comply with Euro 6d-TEMP depending on market .
The Audi CZEA is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size models (2010–2018). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-RPM torque and efficient highway cruising. Designed to meet Euro 5 and Euro 6d-TEMP emissions standards, it balances real-world economy with stringent environmental 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 | 103 kW (140 PS) @ 3,500–4,000 rpm | |
Torque | 320 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 2,000 bar) | |
Emissions standard | Euro 5 (pre-2015); Euro 6d-TEMP (2015–2018) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1544V) | |
Timing system | Chain-driven (long-life, non-serviceable) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 148 kg |
The Audi CZEA was used across Audi's 8V/B8/C7 platforms with transverse mounting in front-wheel-drive variants and longitudinal in quattro applications. This engine received platform-specific adaptations—reinforced mounts in the A6 C7 and revised EGR routing in the A3 8V—and from 2015 the updated A4 B8.5 facelift integrated SCR-based emissions control, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The CZEA's primary reliability risk is EGR cooler failure, with elevated incidence in urban and short-trip driving. Internal Audi quality reports from 2016 indicated a significant number of pre-2015 units required EGR cooler replacement before 100,000 km, while VCA MOT records show increased coolant-in-oil failures linked to EGR degradation. Frequent cold starts and low-load operation increase thermal stress, making regular inspection and coolant quality critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The CZEA is generally robust when properly maintained, but pre-2015 models are prone to EGR cooler failure. Later units with updated coolers and SCR integration show improved reliability. Regular highway driving, use of high-quality diesel, and adherence to oil change intervals (15,000 km) with Audi Longlife-05 oil are essential for long-term durability.
Key issues include EGR cooler leakage, DPF clogging due to short trips, turbo actuator sticking, and high-pressure fuel pump wear. These are documented in Audi service bulletins, particularly SIB 2015-01-03 for EGR failures. Proper maintenance and driving habits significantly reduce failure risks.
The CZEA was used in the Audi A3 (8V, 35 TDI), A4 (B8/B8.5, 40 TDI), and A6 (C7, 40 TDI) from 2010 to 2018. It was phased out in favour of newer EA288 variants with enhanced emissions control. All applications feature either front-wheel drive or quattro all-wheel drive depending on model.
Aftermarket ECU tuning is common on the CZEA platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In real-world conditions, the CZEA achieves approximately 5.2 L/100km (city), 4.1 L/100km (highway), and 4.6 L/100km combined (~60 mpg UK). The A3 35 TDI and A4 40 TDI are particularly efficient. Economy depends on driving style, with consistent highway use yielding best results.
Yes, the CZEA is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can occur, resulting in severe internal damage. Although the chain is designed for the engine's lifetime, any unusual noise from the timing cover should be investigated immediately to prevent catastrophic failure.
Audi specifies SAE 5W-30 oil meeting Longlife-05 standards. This low-ash formulation is critical for protecting the turbocharger, EGR system, and DPF. Oil changes should be performed every 15,000 km or annually, using only VW 507 00-compliant oils to ensure compatibility with emissions components.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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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