The Volkswagen CXXB is a 1,498 cc, inline‑four turbocharged petrol engine produced between 2019 and 2024. It features direct fuel injection (TSI), dual overhead camshafts (DOHC), and variable valve timing on both intake and exhaust cams. In standard form it delivers 110 kW (150 PS) at 5,000 rpm and 250 Nm of torque from 1,500–3,500 rpm, providing responsive performance with strong low‑end pull.
Fitted to models such as the Golf Mk8, T — Roc, and Škoda Octavia Mk4, the CXXB wa…
Production years 2019–2024 meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/9872).
The Volkswagen CXXB is a 1,498 cc inline‑four turbocharged petrol engine engineered for compact and mid-size hatchbacks and SUVs (2019–2024). It combines direct fuel injection (TSI) with a single turbocharger and dual‑VVT to deliver smooth power delivery and efficient urban driving. Designed to meet Euro 6d standards, it integrates a gasoline particulate filter (GPF) for particulate control while maintaining drivability and fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,498 cc | |
Fuel type | Petrol (Unleaded, minimum 95 RON) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.5 mm × 85.9 mm | |
Power output | 110 kW (150 PS) @ 5,000 rpm | |
Torque | 250 Nm @ 1,500–3,500 rpm | |
Fuel system | Bosch HDP6 high‑pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Honeywell TD025) | |
Timing system | Chain‑driven DOHC with variable timing on intake and exhaust | |
Oil type | VW 504 00 / 507 00 (SAE 5W‑30) | |
Dry weight | 113 kg |
The Volkswagen CXXB was used across Volkswagen's Golf Mk8, T-Roc, and Škoda MQB Evo platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the T-Roc and updated cooling packages in the Golf R-Line derivative—and from late 2021 the HPFP cam follower material upgrade, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The CXXB's primary reliability risk is HPFP cam follower wear due to marginal lubrication under high-load conditions, with elevated incidence in high-mileage or infrequently serviced engines. Volkswagen internal service data from 2022 noted that over 15% of warranty fuel-system claims involved HPFP-related misfires, while UK DVSA records show increased MOT advisories for rough idle in Golf Mk8 models with >85,000 km. Extended oil intervals and aggressive driving increase wear, making oil quality and service adherence critical.
Analysis derived from Volkswagen technical bulletins (2019–2024) and UK DVSA failure statistics (2020–2024). Repair procedures should follow manufacturer guidelines.
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The CXXB is generally robust when maintained properly. Early units (2019–2021) are more prone to HPFP cam follower wear, while post-2021 engines show improved durability. Regular oil changes with VW 504 00/507 00 oil and use of quality fuel are essential for longevity beyond 150,000 km.
Top issues include HPFP cam follower wear causing hard starts, GPF clogging from short-trip driving, timing chain tensioner wear, and turbo wastegate rattle. These are documented in Volkswagen service bulletins SIB 2072156/3 and TIS updates from 2020 onward.
The CXXB powered the Golf Mk8 (2019–2024), T-Roc (2019–2024), Škoda Octavia Mk4 (2020–2024), and SEAT Leon Mk4 (2020–2023). It was used exclusively in transverse front-wheel-drive applications within the Volkswagen Group MQB Evo platform family.
Yes. Stage 1 ECU remaps typically yield 170–185 PS safely, as the stock internals handle moderate torque increases. Supporting upgrades like a high-flow air filter and performance intercooler are recommended. Aggressive tuning may accelerate HPFP wear or GPF clogging, so fuel system and regeneration cycles must be monitored.
Real-world consumption is ~6.3 L/100km (city) and ~4.7 L/100km (highway), or about 41–46 mpg UK combined. In the Golf 1.5 TSI, official WLTP figures range from 5.2–5.9 L/100km depending on trim. Economy depends heavily on driving style and GPF regeneration frequency.
Yes. The CXXB is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, causing severe internal damage. This underscores the importance of timely chain system inspections and oil maintenance.
Volkswagen specifies VW 504 00 or 507 00 (SAE 5W‑30) synthetic oil. Change every 15,000 km or 12 months to protect the HPFP cam follower, timing components, and GPF. Non-approved oils increase wear and soot risk significantly.
Comprehensive technical documentation and regulatory references
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