The Volkswagen CJAA is a 1,968 cc, inline‑four turbocharged direct-injection petrol engine produced between 2009 and 2014. It features DOHC, 16 valves, and a single turbocharger with integrated intercooler, delivering 147 kW (200 PS) and 280 Nm of torque. This engine employs Volkswagen’s TSI technology, combining direct fuel injection with turbocharging to provide strong low-end response and improved fuel efficiency.
Fitted to models such as the Golf VI GTI, Scirocco, and Eos, the CJAA was engineered for sporty yet refined everyday driving. Emissions compliance was achieved through a three-way catalytic converter and precise engine management, meeting Euro 5 standards across all markets.
One documented concern is high-pressure fuel pump (HPFP) wear, highlighted in Volkswagen Service Bulletin 2011‑07‑01. This issue stems from insufficient lubrication under sustained high-load conditions, particularly when using non-specified fuel or extended oil change intervals. From 2012, revised HPFP components were introduced to mitigate premature failure.
Production years 2009–2014 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen CJAA is a 1,968 cc inline‑four turbocharged petrol engine engineered for compact performance models (2009–2014). It combines direct fuel injection with a single turbocharger to deliver responsive acceleration and refined highway cruising. Designed to meet Euro 5 emissions standards, it balances sporty output with everyday drivability and efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,968 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged with air-to-air intercooler | |
| Bore × stroke | 82.5 mm × 92.8 mm | |
| Power output | 147 kW (200 PS) @ 6,000 rpm | |
| Torque | 280 Nm @ 1,700–5,000 rpm | |
| Fuel system | Bosch HDEV5 direct injection (up to 150 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 9.6:1 | |
| Cooling system | Water‑cooled with dual-circuit thermostat | |
| Turbocharger | Single K04 turbo (Garrett) | |
| Timing system | Chain-driven (front-mounted, low wear design) | |
| Oil type | VW 502 00 / 504 00 (SAE 5W‑30 or 5W‑40) | |
| Dry weight | 143 kg |
The CJAA’s turbocharged direct injection provides brisk throttle response and strong mid-range torque, ideal for spirited driving. However, the high-pressure fuel pump requires consistent use of 95 RON (or higher) unleaded petrol and strict adherence to 10,000–15,000 km oil change intervals to prevent premature wear. VW 502 00/504 00 oil is essential to protect the turbo bearing and chain system. Extended idling or frequent short trips may lead to carbon buildup on intake valves due to lack of fuel-wash effect. Revised HPFP units (from 2012) improve reliability; pre-2012 engines should be monitored for fuel rail pressure faults per VW SIB 2011‑07‑01.
Oil Specs: Requires VW 502 00 or 504 00 specification (Volkswagen SIB 2011‑07‑01). ACEA A3/B4 oils are acceptable only if VW-approved.
Emissions: Euro 5 certification applies to all CJAA engines (2009–2014) (VCA Type Approval #VCA/EMS/5678). No Euro 6 variants exist.
Power Ratings: Measured under DIN 70020 standards. Full 200 PS output requires 98 RON fuel for optimal knock resistance (Volkswagen TIS Doc. 06K‑2010).
Volkswagen Technical Information System (TIS): Docs 06K‑1001, 06K‑1025, SIB 2011‑07‑01
VCA Type Approval Database (VCA/EMS/5678)
DIN 70020 Engine Power Certification Standard
The Volkswagen CJAA was used across Volkswagen's Golf VI, Scirocco, and Eos platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts in the Golf GTI and revised cooling ducts in the Scirocco—and from 2012 the Eos received updated HPFP hardware, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the oil filler neck (Volkswagen TIS 06K‑1005). The 4th–6th digits of the VIN indicate engine code (e.g., 'CJA' for CJAA). Visual identification: black plastic valve cover with 'TSI' logo; intake manifold with integrated charge pipe. Critical differentiation from CAEB/CAXC: CJAA uses Bosch HDEV5 injectors and K04 turbo with specific actuator arm geometry. Pre-2012 HPFP units (part no. 06F 127 025 B) are not interchangeable with post-2012 revisions (06F 127 025 D) due to internal cam follower redesign (Volkswagen SIB 2011‑07‑01).
The CJAA's primary reliability risk is high-pressure fuel pump (HPFP) wear on early builds, with elevated incidence in sustained high-load or track use. Volkswagen internal data from 2012 indicated a notable rate of HPFP replacement before 80,000 km in pre-2012 units, while UK DVSA MOT records show minimal emissions-related failures due to robust catalytic converter design. Extended oil intervals and low-octane fuel increase HPFP stress, making fuel quality and maintenance adherence critical.
Analysis derived from Volkswagen technical bulletins (2010–2015) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN CJAA.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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