The Audi CAXA is a 1,395 cc, inline — four turbocharged petrol engine produced between 2013 and 2018. It belongs to the EA211 engine family, featuring TFSI (turbocharged fuel stratified injection), DOHC valvetrain, and timing chain drive. In standard tune it delivered 90 kW (122 PS) with peak torque of 200 Nm, designed for responsive urban performance and efficient everyday driving.
Fitted to models such as the A1 (8X), A3 (8V), and Q2, the CAXA engine was engineered for com…
Production years 2013–2018 meet Euro 6 standards .
The Audi CAXA is a 1,395 cc inline-four turbocharged petrol engine developed for compact and subcompact models (2013–2018). It combines TFSI direct injection with a timing chain-driven valvetrain to deliver responsive low-end torque and efficient fuel consumption. Designed to meet Euro 6 standards, it balances city-friendly performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,395 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.5 mm × 79.5 mm | |
Power output | 90 kW (122 PS) @ 5,000 rpm | |
Torque | 200 Nm @ 1,400–3,500 rpm | |
Fuel system | Multi-point and direct injection (TFSI) | |
Emissions standard | Euro 6 | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled, dual-circuit with integrated exhaust manifold | |
Turbocharger | Single turbocharger (BorgWarner KP35) | |
Timing system | Chain-driven (front-mounted, interference design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 97 kg |
The Audi CAXA was used across Audi's 8X/8V platforms with transverse mounting and shared architecture with SEAT and Škoda. This engine received platform-specific adaptations-shorter accessory drives in the A1 and revised intake tuning in the A3-and from 2015, updated timing chain components improved reliability. All adaptations are documented in OEM technical bulletins.
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The CAXA's primary reliability risk is timing chain tensioner wear, with elevated incidence in urban-driven vehicles with frequent cold starts. Internal Audi field reports from 2016 indicated a notable share of pre-2015 units requiring tensioner replacement before 120,000 km, while VCA MOT data links a significant portion of engine warning light incidents to timing correlation faults. Use of non-specified oils and extended service intervals increase wear, making oil quality and timely maintenance critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 CAXA is generally reliable when maintained properly, but pre-2015 models are prone to timing chain tensioner wear. Later revisions with updated components show improved durability. Regular oil changes (every 15,000 km) using Audi Longlife-01 oil and consistent use of high-octane petrol are essential for long-term reliability.
The most documented issues are timing chain tensioner wear, turbo boost leaks, intake carbon buildup, and coolant thermostat failure. These are covered in Audi service bulletins and are often linked to oil quality, short-trip driving, and delayed maintenance intervals.
The CAXA engine was used in the Audi A1 (8X), A3 (8V), and Q2 models between 2013 and 2018. It was offered as the 1.4 TFSI 122 PS variant and paired with both manual and automatic transmissions in front-wheel-drive configurations.
Aftermarket ECU tuning is common on the CAXA 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 CAXA achieves approximately 6.6 L/100km (city), 4.8 L/100km (highway), or about 43 mpg UK combined. Models like the A3 1.4 TFSI typically return 42–47 mpg (UK) on mixed routes, depending on driving style and condition.
Yes, the CAXA uses an interference valvetrain design. If the timing chain fails or jumps, piston-to-valve contact can occur, leading to catastrophic engine damage. Timely inspection and maintenance of the chain system are strongly advised.
Audi specifies SAE 5W-30 synthetic oil meeting Longlife-01 standards. Use only VW 502 00 or Audi-approved equivalents and change every 15,000 km or 12 months to protect the timing chain, turbo, and valve train from wear.
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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