The Volkswagen CYZB is a 1,395 cc, inline‑four turbocharged petrol engine produced between 2012 and 2019. It features an aluminium block and head, dual overhead camshafts (DOHC), 16 valves, and direct fuel injection (TSI). In standard form it delivered 92 kW (125 PS) at 5,000 rpm and 200 Nm of torque from 1,500 to 4,000 rpm, providing responsive low — end performance and efficient cruising for compact VW models.
Fitted to models such as the Golf Mk7, Polo, and T — Cross, the CYZ…
Production years 2012–2019 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/8921).
The Volkswagen CYZB is a 1,395 cc inline‑four turbocharged petrol engine engineered for compact and subcompact models (2012–2019). It combines direct fuel injection (TSI) with a small twin-scroll turbocharger to deliver strong low‑rpm torque and efficient urban driving. Designed to meet Euro 6 emissions standards from launch, it balances performance with low CO₂ output.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,395 cc | |
Fuel type | Petrol (Unleaded, min. 95 RON) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.5 mm × 80.0 mm | |
Power output | 92 kW (125 PS) @ 5,000 rpm | |
Torque | 200 Nm @ 1,500–4,000 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
Emissions standard | Euro 6 | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin‑scroll turbo (Honeywell) | |
Timing system | Toothed belt (front‑mounted) | |
Oil type | VW 502 00 / 504 00 (SAE 5W‑30 or 5W‑40) | |
Dry weight | 112 kg |
The Volkswagen CYZB was used across Volkswagen's Golf Mk7/Polo/T-Cross platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the T-Cross and modified exhaust manifolds in the Polo GTI—and from 2016 the HPFP cam follower material was upgraded, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The CYZB's primary reliability risk is high-pressure fuel pump cam follower wear in early builds, with elevated incidence in high-mileage or infrequently serviced vehicles. Volkswagen internal quality data from 2017 indicated a notable share of pre-2016 engines required HPFP service before 80,000 km, while UK DVSA records show timing belt neglect as a leading cause of engine seizure in this era. Infrequent oil changes and use of non-spec oil accelerate turbo and follower degradation, making correct lubrication and interval adherence critical.
Analysis derived from Volkswagen technical bulletins (2012–2019) and UK DVSA failure statistics (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 CYZB is generally robust when maintained properly, but early models (2012–mid-2016) are prone to HPFP cam follower wear. Later revisions improved durability. Critical maintenance includes 120,000 km timing belt changes and using VW 502 00/504 00 oil. With these observed, the engine can exceed 200,000 km reliably.
Top issues are HPFP cam follower wear (causing hard starts), timing belt failure (due to missed changes), turbo wastegate sticking, and coolant leaks from the integrated water pump. These are documented in Volkswagen service bulletins 01‑15‑08 and standard maintenance advisories.
The CYZB powered the Golf Mk7 1.4 TSI 125 PS (2012–2019), Polo 1.4 TSI 125 PS (2014–2017), and T-Cross 1.4 TSI 125 PS (2018–2019). It was exclusive to Volkswagen and not shared with SEAT, Škoda, or Audi during this period.
Yes. The CYZB responds well to mild tuning: ECU remap can yield +15–25 kW safely. Stock internals handle up to ~150 PS reliably. More aggressive builds require upgraded intercooler and injectors. Avoid over-boosting without supporting hardware.
In a Golf Mk7, expect ~6.8 L/100km (city) and ~4.5 L/100km (highway), or about 42–52 mpg UK combined. Real-world mixed driving typically returns 45–50 mpg UK, depending on condition and driving style.
Yes. The CYZB is an interference engine. If the timing belt fails, pistons will collide with open valves, causing severe internal damage. This makes strict adherence to the 120,000 km or 5-year belt replacement interval absolutely essential.
Volkswagen specifies oil meeting VW 502 00 or 504 00 standard (typically SAE 5W‑30 or 5W‑40). Always use a quality low-SAPS synthetic oil designed for turbocharged direct-injection engines and change it every 15,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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