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 was engineered for refined performance with low fuel consumption. Emissions compliance was achieved through a close‑coupled three‑way catalytic converter, gasoline particulate filter (GPF), and precise lambda control, enabling full Euro 6d‑TEMP and later Euro 6d compliance.
One documented concern is carbon buildup on intake valves due to crankcase ventilation (PCV) oil vapour ingress, highlighted in Volkswagen Service Information Bulletin 2061284/1. While direct injection eliminates fuel-wash cleaning, oil mist from the PCV system deposits on hot intake surfaces over time. From 2020, revised PCV routing and oil separator efficiency were introduced to reduce deposit formation.
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 dual-VVT TSI architecture provides smooth power delivery but requires strict adherence to 15,000 km (or 12-month) oil change intervals using VW 504 00/507 00–approved oil to protect timing chains and turbo bearings. The Bosch HDP6 system demands high-quality EN 228–compliant fuel; ethanol blends above E10 may accelerate injector coking. Although direct injection prevents fuel-wash on intake valves, PCV oil vapour causes carbon buildup—periodic intake cleaning is recommended after 80,000 km. Post-2020 engines feature improved oil separators per SIB 2061284/1; pre-2020 units should be monitored for rough idle or misfires.
Oil Specs: Requires VW 504 00 / 507 00 specification (Volkswagen Owner’s Manual 2019). ACEA C2/C3 oils are acceptable only if VW-approved.
Emissions: Euro 6d-TEMP applies to 2017–2019 models; Euro 6d certification for 2020–2023 (VCA Type Approval #VCA/EMS/9345). Verified via RDE testing.
Power Ratings: Measured under DIN 70020 standards. Output assumes 95 RON fuel quality (Volkswagen TIS Doc. M5040).
Volkswagen Technical Information System (TIS): Docs M5021, M5030, M5040, SIB 2061284/1
VCA Type Approval Database (VCA/EMS/9345)
DIN 70020 Engine Power Certification Standard
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.
Locate the engine code stamped on the front timing cover near the oil filter housing (Volkswagen TIS M5021). The code 'CXHA' appears as a four-letter suffix in the VIN engine designation. Visual cues: CXHA engines use a black plastic intake manifold, Honeywell TD025 turbo, and direct-injection fuel rail with Bosch HDP6 pump. Differentiate from earlier 'DACA' or 'DADA' 1.0 TSI codes by displacement and 150 PS output. PCV oil separator design changed in 01/2020—pre-change units use single-stage separator; post-change use dual-stage with improved efficiency (Volkswagen SIB 2061284/1).
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.
Find answers to most commonly asked questions about VOLKSWAGEN CXHA.
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