The Audi CCTA is a 1,798 cc, inline — four turbocharged petrol engine produced between 2010 and 2016. It features direct fuel injection (FSI), variable valve timing (VVT), and a single — scroll turbocharger. In standard tune, it produces 125 kW (170 PS) and 250 Nm of torque, serving as a mid — range powertrain for Audi’s transverse — platform vehicles.
Fitted to models such as the A3 (8V), A4 (B8), and Q3 (8U), the CCTA engine was engineered for responsive performance and fuel ef…
All CCTA engines comply with Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/6789).
The Audi CCTA is a 1,798 cc inline-four turbocharged petrol engine engineered for transverse-mounted applications (2010–2016). It combines FSI direct injection with turbocharging to deliver responsive mid-range power and improved efficiency. Designed to meet Euro 5 emissions standards, it balances sporty character with everyday drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,798 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (single-scroll) | |
Bore × stroke | 82.5 mm × 84.5 mm | |
Power output | 125 kW (170 PS) @ 5,100–6,000 rpm | |
Torque | 250 Nm @ 1,500–4,500 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 150 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single-scroll turbo (Honeywell GT1549V) | |
Timing system | Chain-driven (non-interference design) | |
Oil type | Audi Longlife-01 (SAE 5W-40) | |
Dry weight | 138 kg |
The Audi CCTA was used across Audi's 8V/8U platforms with transverse mounting. This engine received platform-specific adaptations-shortened exhaust manifolds in the A3 (8V) and revised cooling routing in the Q3 (8U)-and from 2013 the facelifted A3 8V LCI models adopted updated turbo calibration, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
The CCTA's primary reliability risk is turbocharger wastegate actuator failure on early builds, with elevated incidence in urban-driven vehicles. Internal Audi quality reports from 2013 noted a significant share of pre-2013 units requiring actuator replacement before 150,000 km, while UK DVSA MOT data links intake carbon buildup to frequent short trips. Extended oil intervals and poor driving cycles increase turbo and valve wear, making maintenance adherence critical.
Analysis derived from Audi technical bulletins (2010–2016) and UK DVSA failure statistics (2012–2023). 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 CCTA is generally robust when maintained properly, but early models (2010–2012) are prone to turbo wastegate actuator failures. Later revisions (post-2013) show improved durability. Regular oil changes with Audi Longlife-01 (5W-40) and use of high-quality petrol (EN 228) significantly extend engine life. Well-maintained units can exceed 200,000 km reliably.
The most documented issues are turbo wastegate actuator binding (especially pre-2013), intake valve carbon buildup, HPFP wear, and coolant leaks from the water pump. These are covered in Audi service bulletins and field reports. Proper maintenance and driving habits are key to avoiding these failures.
The CCTA 1.8 TFSI 170 PS engine was used in the A3 (8V), A4 (B8), and Q3 (8U) from 2010 to 2016. It was phased out in favor of newer EA888 Gen 3 engines. All applications are transversely mounted with minor platform-specific tuning and ancillary layouts.
Yes. The CCTA responds well to ECU remapping, with stage 1 tunes safely achieving 210–220 PS. The stock turbo and internals handle moderate increases, but supporting mods (intercooler, exhaust) are recommended for higher outputs. Tuning should preserve lambda and boost control to avoid reliability issues.
Good. In an A3 1.8 TFSI (8V), combined consumption is ~6.5 L/100 km (~43 mpg UK). Highway runs can achieve ~5.8 L/100 km (~49 mpg). Real-world mixed driving typically yields 38–43 mpg UK. Economy remains strong even with age if DPF and EGR systems are functioning properly.
No. The CCTA uses a non-interference valvetrain design. If the timing chain fails, piston-to-valve contact is unlikely, reducing risk of catastrophic damage. However, chain replacement is still recommended at 200,000 km or if excessive wear is detected.
Audi specifies 5W-40 synthetic oil meeting Longlife-01 (or newer) standards. Change intervals should not exceed 15,000 km or one year. Using correct oil ensures proper lubrication of the turbo and HPFP, and helps prevent sludge and carbon buildup in the intake system.
Comprehensive technical documentation and regulatory references
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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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