The Volkswagen CUAA is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2008 and 2015. It features direct fuel injection (TSI), dual overhead camshafts (DOHC), and variable valve timing, delivering 155 kW (211 PS) and 280 Nm of torque. Its compact design and turbocharging enable strong low‑rpm response for sporty yet practical drivability.
Fitted to models such as the Golf Mk6 GTI, Passat B6, and Škoda Superb, the CUAA was engineered for dynamic perfo…
All CUAA production years (2008–2015) meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/6789).
The Volkswagen CUAA is a 1,984 cc inline‑four turbocharged petrol engineered for performance sedans and hatchbacks (2008–2015). It combines direct fuel injection (TSI) with a single turbocharger to deliver responsive power and strong mid‑range torque. Designed to meet Euro 5 standards, it balances sporty character with acceptable fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol (RON 95 min) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 155 kW (211 PS) @ 6,000 rpm | |
Torque | 280 Nm @ 1,800–5,000 rpm | |
Fuel system | Bosch HDP5 high-pressure direct injection (up to 120 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 9.6:1 | |
Cooling system | Water‑cooled with dual-circuit layout | |
Turbocharger | Single K04 turbo (Garrett/BorgWarner) | |
Timing system | Chain-driven DOHC | |
Oil type | VW 502 00 / 504 00 (SAE 5W‑40) | |
Dry weight | 145 kg |
The Volkswagen CUAA was used across Volkswagen's Mk6 and B6 platforms with transverse mounting and shared with Škoda under the Volkswagen Group modular strategy. This engine received platform-specific adaptations—revised cooling in the Passat and reinforced mounts in the Golf GTI—and from 2012 the HPFP and camshaft lobe updates improved reliability, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The CUAA's primary reliability risk is high-pressure fuel pump (HPFP) wear, with elevated incidence in high-mileage or high-load usage. Volkswagen internal field data from 2013 indicated a notable rate of HPFP replacement before 120,000 km in pre-2012 builds, while UK DVSA records show no significant emissions-related MOT failures directly tied to this engine. Extended oil intervals and low-quality fuel increase cam lobe and HPFP stress, making oil quality and fuel specification critical.
Analysis derived from Volkswagen technical bulletins (2010–2015) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The CUAA offers strong performance and is generally robust if maintained properly. Early units (2008–2011) had HPFP reliability concerns, addressed in 2012 revisions. With correct oil (VW 502 00/504 00), quality fuel, and timely servicing, it can exceed 200,000 km without major issues.
Top issues include high-pressure fuel pump wear, intake valve carbon buildup (due to direct injection), turbo actuator faults, and minor oil leaks. HPFP problems are well-documented in VW service bulletin 2011‑09, while carbon buildup is a known trait of all TSI engines.
The CUAA powered the Golf Mk6 GTI (2009–2013), Passat B6 (2008–2010), and Škoda Superb (2008–2015). It’s a transverse-mounted 2.0 TSI producing 211 PS, used across the Volkswagen Group’s mid-size and performance platforms.
Yes. The CUAA responds well to ECU remapping, with Stage 1 typically yielding 250–270 PS. Stock internals handle up to ~300 PS reliably. Supporting upgrades—intercooler, exhaust, and HPFP—are recommended for higher stages to avoid overstressing components.
Real-world consumption is ~9.8 L/100km (city) and ~6.4 L/100km (highway), or about 29–37 mpg UK combined. Aggressive driving reduces economy significantly; conservative use may achieve low 8s L/100km.
Yes. The CUAA is an interference engine. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the chain is generally durable with proper maintenance.
Volkswagen specifies 5W‑40 synthetic oil meeting VW 502 00 or 504 00 standards. This is critical for HPFP and cam lobe protection. Change intervals should not exceed 15,000 km or 12 months.
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Regulation (EC) No 715/2007
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