The Volkswagen CUWA 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 turbocharged direct injection system enables strong mid — range pull with improved fuel efficiency compared to larger naturally aspirated units.
Fitted to models such as the Golf Mk6 R, Scirocco R, and Audi S3 (8P), t…
All production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen CUWA is a 1,984 cc inline‑four turbocharged petrol engine engineered for performance hatchbacks and coupés (2008–2015). It combines gasoline direct injection with a single turbocharger to deliver responsive power and strong mid-range torque. Designed to meet Euro 5 emissions standards, it balances sporty performance with acceptable fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol (RON 95 min, RON 98 recommended) | |
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 HDEV5 direct injection (up to 120 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 9.8:1 | |
Cooling system | Water‑cooled with dual-circuit layout | |
Turbocharger | Single K04 turbo (BorgWarner) | |
Timing system | Chain-driven DOHC | |
Oil type | VW 502 00 / 504 00 (SAE 5W‑30 or 5W‑40) | |
Dry weight | 143 kg |
The Volkswagen CUWA was used across Volkswagen's Mk6 and Scirocco platforms with transverse mounting and shared with Audi for longitudinal applications. This engine received platform-specific adaptations—reinforced engine mounts in the Golf R and revised cooling in the Scirocco R—and from 2013 the Audi S3 facelift adopted the CAEB variant, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CUWA's primary reliability risk is high-pressure fuel pump (HPFP) failure on early builds, with elevated incidence in high-mileage or infrequently driven vehicles. Volkswagen internal data from 2012 indicated a notable rate of HPFP replacements before 100,000 km in pre-2012 units, while UK DVSA records show increased fuel system-related MOT advisories in modified examples. Extended oil change intervals and use of low-viscosity oils increase cam follower wear, making oil specification and service 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 CUWA offers strong performance but early units (2008–2011) are prone to HPFP and carbon buildup issues. Later revisions improved fuel pump durability. With strict adherence to oil changes (using VW 502/504 oil) and high-quality fuel, well-maintained examples can exceed 200,000 km reliably.
Top issues include high-pressure fuel pump failure, intake valve carbon buildup, turbo oil leaks, and timing chain tensioner wear. These are documented in Volkswagen service bulletins like SIB 2011‑07 and SIB 2010‑12, especially affecting pre-2012 builds.
The CUWA powered the Golf Mk6 R (2009–2013), Scirocco R (2009–2014), and Audi S3 (8P, 2008–2012). All are Euro 5–compliant performance variants sharing the 211 PS 2.0 TSI platform.
Yes. Stage 1 ECU remaps safely yield 240–260 PS using stock internals. Stage 2 (with upgraded intercooler, exhaust, and HPFP) can reach 300 PS. However, aggressive tuning without supporting mods accelerates HPFP and turbo wear, especially on early units.
Real-world consumption is ~9.5 L/100km (city) and ~6.2 L/100km (highway), or ~30 mpg UK combined. Expect 28–33 mpg (UK) on mixed roads. Economy suffers with aggressive driving or if carbon buildup restricts airflow.
Yes. The CUWA is an interference engine. Timing chain failure or jump can cause piston-to-valve contact, resulting in catastrophic damage. Immediate attention to chain rattle or timing faults is essential.
Volkswagen specifies 5W‑30 or 5W‑40 synthetic oil meeting VW 502 00 or 504 00 standards. Always use manufacturer-approved oil and change every 10,000–15,000 km to protect the HPFP, turbo, and timing system.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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