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 (VCA UK Type Approval #VCA/EMS/5681).
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 | VW 502 00 / 504 00 (SAE 5W‑30) | |
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.
The CAWB's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in vehicles using lower-grade fuel or exceeding service intervals. Internal Volkswagen data indicated a measurable failure rate before 100,000 km in non-compliant cases, while owner reports frequently cite fuel quality as a factor. Extended oil change intervals and use of substandard petrol make adherence to OEM maintenance and fuel specifications critical.
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.
Yes, the CAWB responds well to ECU remapping. Stage 1 tunes can safely increase power to 150-160 PS and torque to 250+ Nm, as the internals are strong. Supporting modifications like a better intercooler are recommended for sustained performance. Always use a reputable tuner.
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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Regulation (EC) No 715/2007
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