The Volkswagen CJXA is a 1,395 cc, inline‑four turbocharged petrol engine produced between 2012 and 2019. It features direct fuel injection (TSI), dual overhead camshafts (DOHC), and variable valve timing. In standard form it delivers 110 kW (150 PS) and 250 Nm of torque, with responsive low‑rpm performance ideal for urban and motorway driving.
Fitted to models such as the Mk7 Golf, Mk2 Jetta, Mk3 Touran, and Škoda Octavia Mk3—including the 1.4 TSI 150 PS variants—the CJX…
Production years 2012–2014 meet Euro 5 standards; 2015–2019 models comply with Euro 6 (including Euro 6d‑TEMP with OPF from 2018) depending on market .
The Volkswagen CJXA is a 1,395 cc inline‑four turbocharged petrol engineered for compact and MPV applications (2012–2019). It combines direct injection (TSI) with a single turbocharger to deliver brisk acceleration and smooth highway performance. Designed to meet Euro 5 (early) and Euro 6 (later) standards, it balances efficiency with everyday drivability.
| 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 | Bosch HDP5 high-pressure direct injection (up to 200 bar) | |
Emissions standard | Euro 5 (2012–2014); Euro 6 (2015–2019) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Honeywell TD025) | |
Timing system | Chain (front‑mounted; low wear design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 112 kg |
The Volkswagen CJXA was used across Volkswagen's Mk7/Mk2 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Touran and updated cooling ducting in the Golf—and from 2018 the Golf Mk7.5 and Octavia Mk3 facelifts adopted Otto particulate filters (OPF), creating minor ECU and sensor 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 manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The CJXA is generally reliable if maintained properly. Early concerns around HPFP wear were addressed from 2016 with revised parts. Using correct VW 502 00/504 00 oil and adhering to 15,000 km service intervals greatly reduces risk. Well-maintained examples often exceed 200,000 km without major issues.
Most common issues are HPFP and cam follower wear, intake carbon buildup (due to direct injection), turbo actuator faults, and—on 2018+ models—OPF clogging from short-trip driving. These are documented in Volkswagen service bulletins, especially STB 2016‑07 for fuel system concerns.
The CJXA 1.4 TSI 150 PS appears in the Golf Mk7 (2012–2019), Jetta Mk2 (2013–2018), Touran Mk3 (2015–2019), and Škoda Octavia Mk3 (2013–2019). All are transverse FWD applications with identical core architecture.
Aftermarket ECU tuning is common on the CJXA 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.
Real-world consumption is ~6.8 L/100km (city) and ~5.0 L/100km (highway), or ~50 mpg UK combined in a Golf. Mixed driving typically yields 46–52 mpg UK. Economy suffers if carbon buildup, HPFP issues, or OPF clogging develop.
Yes. The CJXA is an interference engine. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the chain is front-mounted and generally robust with proper oil maintenance.
Volkswagen specifies 5W‑30 or 5W‑40 synthetic oil meeting VW 502 00 or 504 00 standards. Using non-approved oil voids warranty and increases HPFP wear risk. Change every 15,000 km or annually.
Comprehensive technical documentation and regulatory references
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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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