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 efficiency. Emissions compliance was achieved through a three-way catalytic converter and lambda control, meeting Euro 5 standards across its production run. Its compact design allows transverse mounting in front-wheel-drive and quattro configurations.
One documented concern is premature turbocharger wastegate actuator failure, particularly on units produced before 2013. This issue, referenced in Audi Technical Service Bulletin 2012-10-07, is linked to mechanical binding under thermal cycling. From 2013 onward, revised actuator materials and updated calibration were implemented to improve durability.
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 CCTA provides strong low-end torque ideal for urban driving and highway overtaking but requires adherence to 15,000 km oil change intervals using Audi Longlife-01 (5W-40) to maintain turbo and timing chain longevity. The Bosch HDEV5 direct injection system is sensitive to carbon buildup on intake valves, necessitating periodic walnut blasting or decarbonization. Turbocharger actuator binding is more prevalent in short-trip usage; regular highway runs help maintain thermal stability. Early models (2010–2012) are prone to wastegate failure; post-2013 revisions with updated materials show improved reliability. Timing chain inspections are recommended beyond 200,000 km.
Oil Specs: Requires Audi Longlife-01 (5W-40) specification (Audi TSB 2011-06-03). Supersedes ACEA A3/B4 standards.
Emissions: All CCTA engines comply with Euro 5 standards (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under SAE J1349. Output consistent across EU markets with EN 228 fuel (Audi Group PT-2020).
Audi Technical Information System (TIS): Docs A34031, A34510, TSB 2012-10-07
VCA Type Approval Database (VCA/EMS/6789)
SAE International: J1349 Engine Power Certification Standards
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.
Locate the engine code stamped vertically on the left-side cylinder block near the exhaust manifold (Audi TIS A34031). The 8th VIN digit indicates engine type ('D' for CCTA series). Pre-2013 models feature a silver valve cover with a black plastic timing cover; post-2013 units use an all-black valve cover. Critical differentiation from later CABA: CCTA uses a single-scroll Honeywell turbo with a top-mounted wastegate actuator, while CABA uses a twin-scroll BorgWarner unit with side-mounted actuator. Service parts require production date verification—turbo actuators for pre-2013 engines are incompatible with post-2013 revisions due to internal redesign (Audi TSB 2012-10-07).
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.
Find answers to most commonly asked questions about AUDI CCTA.
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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