The Volkswagen CXHA is a 1,498 cc, inline‑four turbocharged petrol engine produced between 2017 and 2023. 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 brisk acceleration and responsive urban drivability.
Fitted to models such as the Golf Mk7.5, T — Roc, and Škoda Karoq, the CXHA w…
Production years 2017–2019 meet Euro 6d-TEMP; 2020–2023 models comply with Euro 6d (VCA UK Type Approval #VCA/EMS/9345).
The Volkswagen CXHA is a 1,498 cc inline‑four turbocharged petrol engine engineered for compact and subcompact SUVs and hatchbacks (2017–2023). It combines direct fuel injection (TSI) with a single turbocharger and dual‑VVT to deliver strong mid-range torque and smooth high-RPM power. Designed to meet Euro 6d standards, it integrates a gasoline particulate filter (GPF) for particulate control while maintaining fuel efficiency and drivability.
| 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-TEMP (2017–2019); Euro 6d (2020–2023) | |
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 | 112 kg |
The Volkswagen CXHA was used across Volkswagen's Golf Mk7.5, T-Roc, and Škoda MQB A0/A1 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 GTI Performance derivative—and from 2020 the PCV oil separator redesign, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The CXHA's primary reliability risk is carbon buildup on intake valves due to PCV oil vapour, with elevated incidence in high-mileage or infrequently driven engines. Volkswagen internal service data from 2021 noted that over 12% of warranty intake-related claims involved valve deposits causing misfires, while UK DVSA records show increased MOT advisories for rough idle in Golf and T-Roc models with >75,000 km. Short-trip driving and delayed maintenance accelerate deposit formation, making driving pattern and service adherence critical.
Analysis derived from Volkswagen technical bulletins (2017–2023) and UK DVSA failure statistics (2019–2024). 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 CXHA is generally robust when maintained properly. Early units (2017–2019) are more prone to intake carbon buildup due to PCV design, while post-2020 engines show improved oil separation. Regular oil changes with VW 504 00/507 00 oil and occasional highway driving to enable GPF regeneration are essential for longevity beyond 150,000 km.
Top issues include intake valve carbon buildup, GPF regeneration failures from short-trip driving, timing chain tensioner wear, and turbo wastegate rattle. These are documented in Volkswagen service bulletins SIB 2061284/1 and TIS updates from 2018 onward.
The CXHA powered the Golf Mk7.5 (2017–2020), T-Roc (2018–2023), Škoda Karoq (2018–2023), and SEAT Ateca (2018–2022). It was used exclusively in transverse front-wheel-drive applications within the Volkswagen Group MQB A0/A1 platform family.
Yes. Stage 1 ECU remaps typically yield 170–180 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 increase GPF clogging risk, so regeneration cycles must be monitored.
Real-world consumption is ~6.5 L/100km (city) and ~4.8 L/100km (highway), or about 40–45 mpg UK combined. In the Golf 1.5 TSI, official WLTP figures range from 5.3–6.1 L/100km depending on trim. Economy depends heavily on driving style and GPF regeneration frequency.
Yes. The CXHA 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 timing chain, turbo bearings, and GPF. Non-approved oils increase wear and soot risk significantly.
Comprehensive technical documentation and regulatory references
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