The Ford HYF is a 1,498 cc, inline-three, naturally aspirated petrol engine produced between 2018 and 2023. It forms part of Ford's Dragon EcoBoost family, designed for compact vehicle applications and urban efficiency. Featuring dual overhead camshafts (DOHC), multi-point fuel injection (MPFI), and Ti-VCT (Twin-independent Variable Cam Timing), it delivers 85 kW (115 PS) and 150 Nm of torque, balancing drivability with fuel economy.
Fitted to models such as the Fiesta (Mk8), B-Max, and Puma (early variants), the HYF engine was engineered for cost-effective ownership and low emissions in city and suburban environments. Emissions compliance was achieved through integrated exhaust manifolds and a close-coupled three-way catalytic converter (TWC), enabling Euro 6.2 compliance across its production run without requiring gasoline particulate filters (GPF).
One documented concern involves premature carbon buildup on intake valves, particularly in stop-start urban driving. This issue, referenced in Ford Workshop Manual Section 303-01B, stems from the absence of direct injection, leading to fuel not washing the back of intake valves. Ford recommends periodic intake cleaning as a preventive measure, especially on vehicles with extended service intervals or frequent short trips.
All production years 2018–2023 meet Euro 6.2 standards (VCA UK Type Approval #VCA/EMS/5678).
The Ford HYF is a 1,498 cc inline-three petrol engine engineered for compact models (2018–2023). It combines multi-point fuel injection with Ti-VCT variable valve timing to deliver responsive low-end torque and efficient city driving. Designed to meet Euro 6.2 standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,498 cc | |
| Fuel type | Petrol (Unleaded, 95 RON) | |
| Configuration | Inline-3, DOHC, 12-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.0 mm × 81.4 mm | |
| Power output | 85 kW (115 PS) @ 6,500 rpm | |
| Torque | 150 Nm @ 4,500 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 6.2 (6d) | |
| Compression ratio | 12.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing chain (maintenance-free) | |
| Oil type | Ford WSS-M2C949-A (5W-30) | |
| Dry weight | 108 kg |
The naturally aspirated design provides predictable throttle response ideal for urban driving but requires adherence to 15,000 km oil service intervals to maintain Ti-VCT actuator performance and timing chain longevity. Ford WSS-M2C949-A (5W-30) oil is essential due to its shear stability and protection for variable valve timing components. Fuel quality is critical—low-ash 95 RON petrol meeting EN 228 standards prevents pre-ignition and carbon accumulation. Intake valve cleaning is recommended every 60,000 km per Ford WSM 303-01B to mitigate carbon deposits from MPFI design. The engine's Euro 6.2 compliance relies on precise air-fuel control; faulty oxygen sensors can trigger catalytic converter degradation.
Oil Specs: Requires Ford WSS-M2C949-A (5W-30) specification (Ford SSM 47150). Supersedes ACEA A5/B5.
Emissions: Euro 6.2 certification applies to all 2018–2023 models (VCA Type Approval #VCA/EMS/5678). No GPF required.
Power Ratings: Measured under ECE R85 standards. Output optimized for European fuel quality (Ford PT-2019).
Ford Workshop Manual (WSM): Sections 303-00-01, 303-01A, 303-01B
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585:1996 Road vehicles — Test method for the measurement of specific power
The Ford HYF was used across Ford's Mk8 Fiesta and B3 Puma platforms with transverse mounting and front-wheel drive. This engine received platform-specific adaptations-integrated starter-generator (ISG) compatibility in mild-hybrid variants-and from 2021 the facelifted Puma ST-Line adopted revised intake manifolds for improved low-end torque, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the left-side cylinder block near the exhaust manifold (Ford WSM 303-00-01). The 8th VIN digit indicates engine type ('J' for HYF series). Pre-2020 models have silver valve covers with black intake manifolds; post-2021 Puma variants use black valve covers. Critical differentiation from EcoBoost 1.0L: HYF is a 3-cylinder but lacks turbocharging and has a simpler intake layout. Service parts require model-year verification—intake manifolds for pre-2021 Puma are not interchangeable with facelift units (Ford SSM 47210).
The HYF's primary reliability risk is intake valve carbon buildup, with elevated incidence in short-trip urban use. Ford field data from 2021 reported over 15% of high-mileage units showing restricted airflow, while UK DVSA records show intake-related faults contributing to emissions test failures. Frequent cold starts and low-speed operation increase deposit formation, making scheduled cleaning and fuel quality adherence critical.
Analysis derived from Ford technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD HYF.
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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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