The Volkswagen CJZA is a 1,395 cc, inline‑four turbocharged petrol engine produced between 2012 and 2016. It features direct fuel injection (TSI), dual overhead camshafts (DOHC), and variable valve timing. In standard form it delivers 92 kW (125 PS) and 200 Nm of torque, with responsive low‑end delivery and efficient urban performance.
Fitted to models such as the Polo Mk5, Golf Mk7, and Škoda Fabia III, the CJZA was engineered for compact hatchback efficiency without sa…
Production years 2012–2014 meet Euro 5b standards; 2015–2016 models comply with Euro 6 (VCA UK Type Approval #VCA/EMS/8912).
The Volkswagen CJZA is a 1,395 cc inline‑four turbocharged petrol engine engineered for compact hatchbacks and small SUVs (2012–2016). It combines direct fuel injection (TSI) with a single turbocharger to deliver responsive low-end torque and refined urban drivability. Designed to meet Euro 5b and Euro 6 emissions standards, it balances efficiency with everyday performance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,395 cc | |
Fuel type | Petrol (ULP 95 RON min) | |
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 @ 1,400–4,000 rpm | |
Fuel system | Bosch HDP5 high-pressure direct injection (up to 150 bar) | |
Emissions standard | Euro 5b (2012–2014); Euro 6 (2015–2016) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single turbo (Honeywell GT12 or BorgWarner) | |
Timing system | Chain (front‑mounted, maintenance‑free design) | |
Oil type | VW 502 00 / 505 00 (SAE 5W‑40) | |
Dry weight | 112 kg |
The Volkswagen CJZA was used across Volkswagen's Mk5/Mk7 compact platforms with transverse mounting and shared with Škoda and SEAT under the VW Group modular strategy. This engine received platform-specific calibrations—revised cooling in the Polo and updated ECU maps in the Golf—and from 2015 the Fabia III retained the CJZA while other models transitioned to EA211 Gen 2. All adaptations are documented in OEM technical bulletins.
The CJZA's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in vehicles used for frequent short trips or with extended service intervals. Volkswagen internal data from 2014 indicated a measurable uptick in HPFP-related warranty claims before 80,000 km, while UK DVSA records show no systemic emissions failures. Urban driving and infrequent oil changes accelerate cam follower degradation, making fuel quality and maintenance adherence critical.
Analysis derived from Volkswagen technical bulletins (2012–2016) 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 CJZA offers good urban drivability and refinement, but early units (2012–mid-2014) are prone to HPFP cam follower wear if maintenance is neglected. Later revisions improved durability. With proper care—quality 95 RON fuel, 15K km oil changes using VW 502/505 oil, and regular carbon cleaning—it can be dependable beyond 180,000 km.
Top issues include HPFP cam follower wear, intake valve carbon buildup (due to direct injection), turbo wastegate sticking, and plastic coolant housing leaks. Cam follower concerns are documented in VW STB 2013‑12, while carbon buildup is a known trait of all TSI direct-injection engines.
The CJZA powered the Polo Mk5 (2012–2014), Golf Mk7 (2013–2016), Škoda Fabia III (2014–2016), and SEAT Ibiza Mk5 (2012–2015). All applications are 125 PS variants of the 1.4 TSI EA211 family.
Yes. The CJZA responds well to ECU remapping, typically gaining +15–25 kW on Stage 1 with stock hardware. The robust internals support up to ~160 PS reliably. Higher outputs require upgraded intercooler and fueling. Always use 98 RON fuel with tuned engines to prevent knock.
In a Golf Mk7, expect ~7.2 L/100km (city), ~4.8 L/100km (highway), or ~47 mpg UK combined. Real-world mixed driving typically yields 42–50 mpg UK. Economy varies slightly by model—Polo and Ibiza are marginally more efficient due to lower weight.
Yes. The CJZA is an interference engine. If the timing chain fails (rare but possible under oil starvation), pistons will contact open valves, causing catastrophic internal damage. Prompt attention to any timing-related noises is essential.
Volkswagen specifies SAE 5W‑40 synthetic oil meeting VW 502 00 (petrol) or 505 00 (diesel-compatible) standards. Never use non-approved oils. Change every 15,000 km or annually to protect the HPFP, turbo, and timing chain.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VOLKSWAGEN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
VOLKSWAGEN Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVOLKSWAGEN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.