The Audi CZSE 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, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC), it delivers 103 kW (140 PS) and 320 Nm of torque, with enhanced low — end responsiveness for urban and highway use.
Fitted to…
Production years 2010–2014 meet Euro 5 standards; 2015–2018 models comply with Euro 6d-TEMP depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Audi CZSE 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 cruising. Designed to meet Euro 5 and Euro 6 emissions standards, it balances everyday drivability with 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 (2010–2014); Euro 6 (2015–2018) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1544V) | |
Timing system | Double-row chain (front-mounted; tensioner wear-prone) | |
Oil type | Audi Longlife-05 (SAE 5W-30) | |
Dry weight | 168 kg |
The Audi CZSE was used across Audi's 8V/B8/C7 platforms with transverse mounting in front-wheel-drive models and longitudinal in quattro variants. This engine received platform-specific adaptations-shorter intake manifolds in the A3 and revised cooling layouts in the Q5-and from 2015 the facelifted A4 B9 adopted the updated EA288 evo variant with enhanced SCR dosing, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CZSE's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in short-trip urban use. Internal Audi quality reports from 2014 indicated a significant number of pre-2014 engines requiring chain service before 150,000 km, while UK DVSA data links a notable share of emissions-related MOT failures to EGR and DPF clogging in city-driven vehicles. Frequent cold starts and extended idling increase stress on chain components, making oil quality and interval adherence critical.
Analysis derived from Audi technical bulletins (2012–2016) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The CZSE delivers solid performance and efficiency, but early models (2010–2013) had reliability concerns, particularly timing chain tensioner wear. Later revisions (post-2014) improved durability with updated components. Well-maintained engines with regular oil changes using Audi Longlife-05 (5W-30) can exceed 200,000 km. Adherence to service intervals is critical for long-term reliability.
The most documented issues are timing chain tensioner wear, turbo actuator sticking, EGR and intake carbon buildup, and oil leaks from valve/timing covers. These are confirmed in Audi service bulletins and field reports. Regular maintenance significantly reduces the risk of major failures.
The CZSE engine was used in the A3 (8V), A4 (B8/B9), A6 (C7), and Q5 (8R) models from 2010 to 2018. It was available in 35 TDI and 40 TDI trims, primarily in European markets. Euro 5 models were produced until 2014, with Euro 6 variants from 2015 onward.
Yes. The CZSE responds well to ECU remapping, with stage 1 tunes typically adding +25–35 kW safely. Stock internals handle increased torque, but supporting mods (intercooler, exhaust) are recommended for higher stages. Tuning should be performed by specialists familiar with EA288 engine characteristics.
Excellent. In an A4 2.0 TDI (B8), real-world consumption averages ~5.2 L/100km (city) and ~4.1 L/100km (highway), or ~54 mpg UK combined. A3 and Q5 variants show similar efficiency. Expect 50–55 mpg UK on mixed driving with proper maintenance.
Yes. The CZSE is an interference engine. If the timing chain fails or jumps, pistons can strike open valves, resulting in severe internal damage. Immediate attention to any chain rattle or warning lights is essential to prevent catastrophic engine failure.
Audi specifies SAE 5W-30 oil meeting Longlife-05 standards. Use only VW 507 00 or Audi-approved synthetic oil and change every 15,000 km or annually. Proper oil ensures chain lubrication and protects the high-pressure fuel system.
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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