The Volkswagen CYKB is a 1,395 cc, inline‑four turbocharged petrol engine produced between 2012 and 2020. It features an aluminium block and head, DOHC 16‑valve architecture, and direct fuel injection, paired with a small twin‑scroll turbocharger and integrated exhaust manifold. In standard form it delivers 92 kW (125 PS) and 200 Nm of torque, with responsive low‑end thrust ideal for compact urban mobility.
Fitted to models including the Polo Mk5, Fabia III, and Ibiza 6J, the CYKB was engineered for fuel-efficient city driving with strong transient response. Emissions compliance was achieved through a three-way catalytic converter, lambda sensors, and cooled exhaust gas recirculation (EGR), enabling Euro 6b compliance across all European markets.
One documented engineering concern is high-pressure fuel pump (HPFP) drive lobe wear on the camshaft, highlighted in Volkswagen Technical Service Bulletin 2015‑12. This issue stems from surface fatigue under repeated high-load injection cycles. From mid‑2016, Volkswagen revised the camshaft material hardness and surface treatment to improve durability.
Production years 2012–2020 meet Euro 6b emissions standards (VCA UK Type Approval #VCA/EMS/8765).
The Volkswagen CYKB is a 1,395 cc inline‑four turbocharged petrol engine engineered for supermini and compact models (2012–2020). It combines direct injection with a twin-scroll turbocharger and integrated exhaust manifold to deliver brisk low-RPM response and urban efficiency. Designed to meet Euro 6b standards, it balances performance with stringent emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,395 cc | |
| Fuel type | Petrol (95 RON minimum) | |
| 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 @ 1,400–3,500 rpm | |
| Fuel system | Bosch HDP5 high-pressure direct injection (up to 200 bar) | |
| Emissions standard | Euro 6b | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled with electric auxiliary pump | |
| Turbocharger | Twin‑scroll turbo (Honeywell TD025) | |
| Timing system | Chain (front‑mounted; 240,000 km design life) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑30 or 5W‑40) | |
| Dry weight | 112 kg |
The CYKB provides brisk low-RPM torque suited to urban environments but requires strict adherence to 15,000 km or 12‑month oil changes using VW 502 00/504 00 oil to protect the timing chain and turbo bearings. The Bosch HDP5 high-pressure fuel pump is driven directly off the intake camshaft; pre‑mid‑2016 engines are susceptible to cam lobe wear under high-load conditions. Extended short trips increase carbon buildup on intake valves due to lack of fuel washing (a known trait of direct injection). Post‑2016 camshafts feature hardened lobes per TSB 2015‑12.
Oil Specs: Requires VW 502 00 or 504 00 (5W-30/5W-40) specification (Volkswagen Lubricants Spec VLS-502-00). Mandatory for chain and turbo protection.
Emissions: Euro 6b certification applies to all 2012–2020 CYKB models (VCA Type Approval #VCA/EMS/8765). Verified via RDE testing protocols.
Power Ratings: Measured per UN ECE R85. Output verified via Volkswagen Group PT-2018 dyno logs.
Volkswagen ETKA Documentation: 04E-906-021, 04E-906-022
Volkswagen Technical Service Bulletin 2015-12
VCA Type Approval Database (VCA/EMS/8765)
EU Regulation (EC) No 715/2007 (Euro 6b)
The Volkswagen CYKB was used across Volkswagen's PQ25 and MQB A0 platforms with transverse mounting and licensed to Škoda and SEAT. This engine received a critical camshaft revision in mid‑2016, creating parts interchange limits between early and late production. Cross-brand usage includes Škoda Fabia III and SEAT Ibiza 6J. All adaptations are documented in OEM technical bulletins.
The engine code “CYKB” is stamped on the front timing cover near the oil filler neck (Volkswagen ETKA 04E-906-021). VIN digit 4 is “C” for 1.4 TSI variants. Critical differentiation from CZDA/CZEB: CYKB uses lower boost pressure and unique ECU calibration. Pre‑mid‑2016 camshafts have part number 04E 109 021 A; post‑revision units use 04E 109 021 B with nitrided lobes. Service parts must match production date—early HPFP drive kits are incompatible with later camshafts due to lobe profile changes (VW TSB 2015‑12).
The CYKB's primary reliability risk is high-pressure fuel pump cam lobe wear on early production engines, with elevated incidence in high-mileage or hot-climate use. Volkswagen internal quality data from 2016 noted a significant share of pre‑mid‑2016 units requiring camshaft replacement before 100,000 km, while UK DVSA records show frequent MOT advisories for misfires linked to carbon-fouled intake valves in urban-driven examples. Extended short-trip cycles and poor oil quality accelerate cam and chain degradation, making oil discipline and fuel system maintenance critical.
Analysis derived from Volkswagen technical bulletins (2012–2020) and UK DVSA petrol engine reliability reports (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN CYKB.
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Regulation (EC) No 715/2007
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