The Volkswagen CBWA is a 1,390 cc, inline‑four turbocharged petrol engine produced between 2008 and 2015. It features direct fuel injection (TSI), a single turbocharger, and dual overhead camshafts (DOHC). This engine was engineered for responsive performance in compact models, delivering outputs around 103 kW (140 PS) and 220 Nm of torque, providing strong low — rpm pull for everyday drivability.
Fitted to models such as the Mk6 Golf, Jetta, and Scirocco, the CBWA bala…
Production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5679).
The Volkswagen CBWA is a 1,390 cc inline‑four turbocharged petrol engineered for compact hatchbacks and sedans (2008-2015). It combines direct fuel injection (TSI) with a single turbocharger to deliver responsive acceleration and improved fuel efficiency. Designed to meet Euro 5 standards, it balances sporty performance with everyday economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,390 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.5 mm × 75.6 mm | |
Power output | 103 kW (140 PS) | |
Torque | 220 Nm @ 1,500–3,500 rpm | |
Fuel system | Gasoline direct injection (Bosch MED 17.5) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single turbo (IHI or Garrett) | |
Timing system | Chain-driven | |
Oil type | VW 502 00 / 504 00 (SAE 5W‑30) | |
Dry weight | Approx. 120 kg |
The Volkswagen CBWA was used across Volkswagen's A5 platform with transverse mounting. This engine received platform-specific adaptations-standardised ECU mapping for Golf/Jetta and revised intake manifolds for Scirocco-and no major facelift revisions affecting core compatibility occurred during its production. All adaptations are documented in OEM technical bulletins.
The CBWA'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 service data indicates a notable number of replacements under warranty, while owner reports frequently cite drivability issues preceding failure. Fuel quality and maintenance adherence make preventative measures critical.
Analysis derived from Volkswagen technical bulletins (2008-2015) and aggregated owner-reported failure data (2010-2023). Repair procedures should follow manufacturer guidelines.
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The CBWA is generally robust with proper care. Its main weakness is the high-pressure fuel pump, which can fail prematurely with poor fuel or neglected servicing. Using the correct oil (VW 502/504) and premium fuel, along with timely HPFP replacement if issues arise, allows for excellent long-term reliability.
The most frequent issues are high-pressure fuel pump (HPFP) failure, carbon buildup on intake valves, turbo actuator/solenoid faults causing boost issues, and coolant leaks from the plastic thermostat housing. These are well-documented in VW service bulletins and owner communities.
The 1.4 TSI (140 PS) CBWA engine was used in the Volkswagen Golf Mk6 (2009-2013), Jetta Mk6 (2011-2015), Scirocco Mk3 (2008-2015), and Eos (2009-2015). It was not used in Audi, Seat, or Skoda models, which had different 1.4 TSI variants.
Yes, the CBWA responds well to ECU remapping. Stage 1 tunes can safely increase power to around 170-180 PS and torque to 280 Nm, leveraging the stock turbo and internals. Supporting modifications like an upgraded intercooler are recommended for optimal reliability and performance gains.
Official combined figures are around 6.2 L/100km (46 mpg UK). Real-world consumption typically ranges from 7.2-8.7 L/100km (33-39 mpg UK) in mixed driving, depending heavily on driving style. Highway cruising can yield figures closer to 5.7 L/100km (50 mpg UK).
Yes. The CBWA is an interference engine. If the timing chain were to fail (though rare), the pistons would collide with the open valves, causing significant internal engine damage. Fortunately, the chain is very durable with proper oil maintenance.
Volkswagen mandates oil meeting the VW 502 00 or 504 00 specification, typically a 5W-30 synthetic. Using the correct oil is crucial for protecting the turbocharger, preventing carbon buildup, and ensuring the longevity of the high-pressure fuel pump. Change intervals should not exceed 15,000 km or 1 year.
Comprehensive technical documentation and regulatory references
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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)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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