The Volkswagen CAWB is a 1,390 cc, inline‑four turbocharged petrol engine produced between 2012 and 2015. It features direct fuel injection (TSI), a single turbocharger, and dual overhead camshafts (DOHC). This engine was designed to offer a balance of performance and efficiency for Volkswagen's compact models, delivering responsive power for everyday driving.
Fitted primarily to the Mk7 Golf and related MQB — platform vehicles like the Audi A3 (8V), the CAWB was engi…
Production years 2012–2015 meet Euro 5 standards .
The Volkswagen CAWB is a 1,390 cc inline‑four turbocharged petrol engine engineered for compact hatchbacks and sedans (2012-2015). It combines direct fuel injection (TSI) with a single turbocharger to deliver responsive performance and good fuel efficiency. Designed to meet Euro 5 standards, it balances sporty character with everyday practicality.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,390 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.5 mm × 80.0 mm | |
Power output | 90 kW (122 PS) | |
Torque | 200 Nm @ 1,500–3,500 rpm | |
Fuel system | Direct injection (TSI), Bosch HDEV5 high-pressure pump | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single turbocharger (IHI or BorgWarner) | |
Timing system | Chain-driven (maintenance-free design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Approx. 120 kg |
The Volkswagen CAWB was used across Volkswagen Group's MQB platform with transverse mounting. This engine received platform-specific adaptations-shared ECU calibrations with the Audi A3 and identical mounting points in the SEAT León-creating broad parts compatibility within the group. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from Volkswagen technical bulletins (2012-2016) and aggregated European owner association data (2015-2023). 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 CAWB is generally robust with proper care. Its main weakness is the high-pressure fuel pump, which can fail prematurely with poor fuel or infrequent oil changes. Using 95 RON petrol and changing oil every 15,000 km (or annually) significantly improves longevity. The timing chain is designed to be maintenance-free.
The most frequent issues are high-pressure fuel pump (HPFP) failure, carbon buildup on intake valves causing rough running, and turbocharger actuator faults leading to boost problems. PCV system failure causing oil consumption is also common. These are covered in VW Group service bulletins.
The CAWB 1.4 TSI 122 PS engine was used in the Volkswagen Golf Mk7 (2012-2015). It was also shared across the VW Group, appearing in the Audi A3 (8V), SEAT León Mk3, and Škoda Octavia Mk3 from 2012-2015, all badged as 1.4 TSI/TFSI 122 PS.
Aftermarket ECU tuning is common on the CAWB 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.
Official combined figures are around 5.4 L/100km (52 mpg UK). Real-world economy typically ranges from 6.3-7.3 L/100km (39-45 mpg UK) in mixed driving, depending on conditions and driving style. Highway cruising can yield figures closer to the official rating.
Yes. The CAWB is an interference engine. If the timing chain were to fail (though rare), the pistons would collide with the open valves, causing catastrophic internal damage. This underscores the importance of using the correct oil to ensure the chain's longevity.
Volkswagen mandates oil meeting VW 502 00 or preferably 504 00 specifications, typically SAE 5W-30. Using the correct low-ash, fully synthetic oil is crucial for protecting the turbocharger, timing chain, and emissions systems. Never use non-approved oils.
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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