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, Sciroc…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The CJAA offers strong performance and refinement, but early units (2009–2011) are prone to HPFP failures. Later revisions (2012 onward) improved pump durability. With proper maintenance—especially using correct fuel (95+ RON) and oil (VW 502 00)—the engine can be very reliable beyond 200,000 km.
Top issues include high-pressure fuel pump wear, carbon buildup on intake valves (due to direct injection), turbo actuator faults, and plastic coolant flange leaks. These are documented in Volkswagen service bulletins, particularly SIB 2011‑07‑01 for HPFP concerns.
The CJAA was used in the Golf VI GTI (2009–2013), Scirocco 2.0 TSI (2009–2014), and Eos 2.0 TSI (2009–2014). All are Euro 5-compliant and feature the 200 PS output variant of Volkswagen’s 2.0 TSI engine family.
Yes. The CJAA responds well to ECU remapping, typically gaining +30–50 kW on stage 1 with stock hardware. The K04 turbo and internals support up to ~250 kW with supporting mods (intake, exhaust, intercooler). Always use 98 RON fuel and monitor HPFP health post-tune.
In a Golf GTI, expect ~8.5 L/100km (city) and ~5.8 L/100km (highway), or about 33 mpg UK combined. Real-world mixed driving typically yields 28–35 mpg (UK), depending on driving style and conditions. Efficiency is better than older FSI engines but less than modern downsized TSI units.
Yes. The CJAA is an interference engine. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain design is robust and rarely fails if maintained properly.
Volkswagen specifies 5W‑30 or 5W‑40 synthetic oil meeting VW 502 00 or 504 00 standards. Always use a VW-approved oil and change every 10,000–15,000 km to protect the turbo, HPFP, and timing system.
Comprehensive technical documentation and regulatory references
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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
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