The Audi CTEC is a 1,968 cc, inline — four turbocharged diesel engine produced between 2015 and 2020. It belongs to the EA288 engine family, designed for improved efficiency and emissions compliance. Featuring common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts, it delivers 110 kW (150 PS) and 340 Nm of torque, providing strong low — end performance ideal for daily driving.
Fitted to models such as the A3 (8V), A4 (B9), and Q3 (8…
All production years (2015–2020) comply with Euro 6b and later Euro 6d-TEMP standards depending on market (VCA UK Type Approval #VCA/EMS/6789).
The Audi CTEC is a 1,968 cc inline-four turbocharged diesel engine developed for transverse applications (2015–2020). It integrates common rail injection with a variable geometry turbocharger to deliver high low-end torque and efficient cruising. Designed to meet stringent Euro 6 standards, it uses SCR/AdBlue technology and iEGR for emissions control while maintaining strong drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,968 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (variable geometry turbo) | |
Bore × stroke | 81.0 mm × 95.5 mm | |
Power output | 110 kW (150 PS) @ 3,250–4,200 rpm | |
Torque | 340 Nm @ 1,750–3,000 rpm | |
Fuel system | Common rail (up to 2,000 bar), Bosch CP4 | |
Emissions standard | Euro 6b (2015–2018); Euro 6d-TEMP (2018–2020) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Variable geometry turbo (BorgWarner) | |
Timing system | Dual chain (primary and secondary) | |
Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
Dry weight | 148 kg |
The Audi CTEC was used across Audi's MQB platform with transverse mounting and shared with Volkswagen Group brands. This engine received platform-specific adaptations-integrated exhaust in the cylinder head and revised turbo routing in the A3-and from 2017 the updated EA288evo variant introduced improved oil flow to the timing system, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CTEC's primary reliability risk is timing chain wear on early builds, with elevated incidence in short-trip urban use. Internal Audi quality reports from 2016 noted increased chain guide wear in pre-2017 units before 120,000 km, while UK DVSA data links EGR/DPF clogging to frequent short journeys. Cold-start cycles and extended idling increase chain stress, making oil quality and interval adherence critical.
Analysis derived from Audi technical bulletins (2015-2018) and UK DVSA failure statistics (2017-2023). 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 CTEC offers strong torque and efficiency, but early models (2015–2016) had timing chain concerns. Later revisions (post-2017) improved oil flow and tensioner design, enhancing durability. Regular maintenance using VW 504 00 oil and 15,000 km service intervals greatly improves long-term reliability.
Key issues include timing chain wear (especially pre-2017), EGR/DPF clogging due to short trips, turbo actuator failures, and AdBlue system faults. These are documented in Audi service bulletins and field reports, with timing chain being the most critical if maintenance is deferred.
The CTEC engine was used in the Audi A3 (8V), A4 (B9), and Q3 (8U) from 2015 to 2020. It was also shared across Volkswagen Group models including the Volkswagen Golf 7 (2.0 TDI). All variants produce 150 PS and meet Euro 6 emissions standards.
Yes. The CTEC responds well to ECU remapping, with stage 1 tunes typically adding +30–40 kW. Stock internals handle increased boost reliably up to 190–200 PS. Supporting mods like intercooler and exhaust improve gains. Tuning should be performed by specialists familiar with EA288 timing risks.
In combined driving, the CTEC achieves ~5.0 L/100km (57 mpg UK). Highway efficiency improves to ~4.6 L/100km (61 mpg UK), while city driving may reach 6.0 L/100km (47 mpg UK). Real-world consumption depends on driving style, but 45–55 mpg UK is typical for mixed use.
Yes. The CTEC is an interference engine. If the timing chain fails, pistons can collide with open valves, causing catastrophic internal damage. Immediate attention to chain rattle or oil pressure warnings is essential to prevent engine destruction.
Audi specifies SAE 5W-30 oil meeting VW 504 00 (diesel) or 507 00 (multi) standards. Use of correct oil is critical for timing chain lubrication. Change intervals should not exceed 15,000 km or one year to maintain engine longevity and prevent premature wear.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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