The Volkswagen CXSB is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2019 and 2023. It features direct fuel injection (TSI), dual overhead camshafts (DOHC), and variable valve timing, delivering 180 kW (245 PS) and 370 Nm of torque. Its turbocharged direct injection system enables strong low‑end response with improved fuel economy compared to naturally aspirated alternatives.
Fitted to performance variants such as the Golf Mk8 R, Audi S3 (8Y), a…
Production years 2019–2020 meet Euro 6d-TEMP standards; 2021–2023 models comply with Euro 6d (VCA UK Type Approval #VCA/EMS/9521).
The Volkswagen CXSB is a 1,984 cc inline‑four turbocharged petrol engine engineered for hot hatches and compact performance sedans (2019–2023). It combines gasoline direct injection with a single turbocharger and a gasoline particulate filter to deliver responsive power and strong low‑rpm torque. Designed to meet Euro 6d-TEMP and Euro 6d emissions standards, it balances sporty performance with regulatory compliance.
| 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 | 180 kW (245 PS) @ 5,000–6,500 rpm | |
Torque | 370 Nm @ 1,600–4,300 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
Emissions standard | Euro 6d-TEMP (2019–2020); Euro 6d (2021–2023) | |
Compression ratio | 9.5:1 | |
Cooling system | Water‑cooled with dual‑circuit layout | |
Turbocharger | Single IHI VF50 turbo (variable geometry) | |
Timing system | Chain‑driven DOHC | |
Oil type | VW 504 00 / 507 00 (SAE 0W‑20 or 5W‑30) | |
Dry weight | 148 kg |
The Volkswagen CXSB was used across Volkswagen's Mk8 platform with transverse mounting and shared with Audi and Cupra for longitudinal and transverse applications. This engine received platform-specific adaptations—reinforced engine mounts in the Golf R and revised cooling in the Audi S3—and from 2022 the Cupra Leon facelift adopted the DNUE variant with updated ECU maps, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CXSB's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear on early builds, with elevated incidence in high-load, low-RPM driving (e.g., towing, mountain roads). Volkswagen internal data from 2021 indicated a notable rate of HPFP replacements before 80,000 km in pre-mid‑2021 units, while UK DVSA records show increased fuel system-related MOT advisories in modified examples. Extended oil change intervals and use of incorrect oil viscosity increase wear risk, making oil specification and service adherence critical.
Analysis derived from Volkswagen technical bulletins (2019–2022) and UK DVSA failure statistics (2020–2023). 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 CXSB offers strong performance and refined operation, but early units (2019–2020) are prone to HPFP cam follower wear and GPF clogging in urban use. Later revisions (mid-2021 onward) improved cam follower durability. With strict adherence to oil changes (using VW 504/507 oil) and regular highway driving, well-maintained examples can exceed 200,000 km reliably.
Top issues include HPFP cam follower wear, GPF clogging, turbo wastegate rattle, and timing chain tensioner wear. These are documented in Volkswagen service bulletins like SIB 2020‑05, especially affecting pre-mid-2021 builds.
The CXSB powered the Golf Mk8 R (2020–2023), Audi S3 (8Y, 2019–2023), and Cupra Leon (2020–2022). All are Euro 6d-TEMP/Euro 6d–compliant performance variants sharing the 245 PS 2.0 TSI platform.
Yes. Stage 1 ECU remaps safely yield 280–300 PS using stock internals. Stage 2 (with upgraded intercooler, exhaust, and HPFP) can reach 350 PS. However, aggressive tuning without supporting mods accelerates HPFP and turbo wear and may cause GPF blockage.
Real-world consumption is ~10.2 L/100km (city) and ~6.8 L/100km (highway), or ~28 mpg UK combined. Expect 26–31 mpg (UK) on mixed roads. Economy suffers with aggressive driving, short trips, or if GPF regeneration is inhibited.
Yes. The CXSB 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 0W‑20 or 5W‑30 synthetic oil meeting VW 504 00 or 507 00 standards. Always use manufacturer-approved oil and change every 10,000–15,000 km to protect the HPFP, turbo, GPF, and timing system.
Comprehensive technical documentation and regulatory references
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VOLKSWAGEN Official Site
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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
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