The Volkswagen CASC is a 1,395 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 iteration delivered 110 kW (150 PS) and 250 Nm of torque, engineered for a balance of spirited performance and efficiency in compact applications.
Fitted primarily to the Mk7 Golf and related MQB — platform vehicles, the CASC was designed for responsive acceler…
Production years 2012–2015 meet Euro 5 standards .
The Volkswagen CASC is a 1,395 cc inline‑four turbocharged petrol engineered for compact hatchbacks and sedans (2012-2015). It combines gasoline direct injection (TSI) with a single turbocharger to deliver strong mid-range torque and efficient cruising. Designed to meet Euro 5 standards, it balances everyday performance with fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,395 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.5 mm × 80.0 mm | |
Power output | 110 kW (150 PS) | |
Torque | 250 Nm @ 1,500–3,500 rpm | |
Fuel system | Direct Injection (TSI), Bosch MED17.5 ECU | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single turbocharger (IHI or Garrett) | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Approx. 122 kg |
The Volkswagen CASC was used across Volkswagen's A7 (MQB) platform with transverse mounting. This engine received platform-specific ECU mappings for the Golf and Audi A3, creating minor software interchange limits. 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 owner-reported data aggregated from manufacturer service networks (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 CASC is generally a robust and efficient engine. Its main long-term concern is the potential for water pump failure on early production units. With diligent coolant system maintenance, timely changes using correct spec oil, and addressing any pump issues early, the engine can be very reliable for high mileage.
The most common issues are water pump failure (especially early plastic impeller units), failure of the high-pressure fuel pump, worn ignition coils or spark plugs, and PCV valve clogging. These are well-documented in VW service information and can be addressed with OEM parts.
The CASC 1.4 TSI was primarily used in the Golf Mk7 (2012-2015). Due to VW Group platform sharing, it was also fitted to the Audi A3 (8V), SEAT Leon Mk3, and Škoda Octavia Mk3 during the same period, always producing 150 PS.
Aftermarket ECU tuning is common on the CASC 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.
Fuel economy is excellent for its performance. Expect around 5.5-6.5 L/100km (43-51 mpg UK) combined in a Golf Mk7. Real-world figures vary with driving style, but it offers a superb balance of power and efficiency, making it a popular choice for daily drivers.
Yes. The CASC is an interference engine. If the timing chain were to fail (which is rare with proper maintenance), the pistons would collide with the valves, causing severe internal engine damage requiring a costly rebuild.
Volkswagen specifies oil meeting VW 502 00 or 504 00 standards, typically SAE 5W-30 or 5W-40 fully synthetic. Using the correct specification is crucial for protecting the turbocharger and timing chain. Change intervals should not exceed 15,000 km or 1 year.
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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