The Ford EYDG is a 1,498 cc, inline-three turbocharged petrol engine produced between 2018 and 2023. It forms part of Ford's EcoBoost engine family, designed to deliver responsive performance and improved fuel efficiency in compact and subcompact vehicles. Featuring direct fuel injection, dual overhead camshafts (DOHC), and an integrated exhaust manifold, the EYDG generates 103 kW (140 PS) and 240 Nm of torque.
Fitted to models such as the Focus (C519), Fiesta (Mk8), and Puma, the EYDG was engineered for urban and mixed driving conditions, offering strong low-end torque and smooth throttle response. Emissions compliance is achieved via a gasoline particulate filter (GPF) and closed-loop lambda control, enabling Euro 6d-TEMP compliance across its production run.
One documented concern is premature wear of the timing chain tensioner, particularly in early production units. This issue, referenced in Ford Service Action 19S06, is attributed to inadequate oil flow during cold-start cycles. From 2020, Ford introduced an updated tensioner design and revised oil pump calibration to mitigate the risk.
Production years 2018–2020 meet Euro 6d-TEMP standards; 2021–2023 models comply with full Euro 6d (VCA UK Type Approval #VCA/EMS/5678).
The Ford EYDG is a 1,498 cc inline-three turbocharged petrol engine engineered for compact and subcompact models (2018–2023). It combines direct fuel injection with a single-scroll turbocharger to deliver responsive low-end torque and efficient urban driving. Designed to meet Euro 6d emissions standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,498 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-3, DOHC, 12-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 79.0 mm × 81.4 mm | |
| Power output | 103 kW (140 PS) @ 6,000 rpm | |
| Torque | 240 Nm @ 1,600–4,000 rpm | |
| Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
| Emissions standard | Euro 6d-TEMP (2018–2020), Euro 6d (2021–2023) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | IHI single-scroll turbo (RHF4) | |
| Timing system | Chain-driven (front-mounted; tensioner wear-prone) | |
| Oil type | Ford WSS-M2C949-A (5W-30) | |
| Dry weight | 115 kg |
The single-scroll turbo provides strong low-RPM torque ideal for city driving but requires strict adherence to 15,000 km oil change intervals to prevent timing chain wear and turbo bearing degradation. Ford WSS-M2C949-A (5W-30) oil is critical due to its specific formulation protecting the front-mounted chain system. Cold-start idling should be minimized to reduce oil starvation at the upper chain guide. The Bosch HDEV5 fuel system demands high-octane unleaded fuel (RON 95+) to prevent knock and injector coking. Post-2020 models feature revised chain guides; pre-2020 units should have the tensioner upgrade per Ford SIB 19S06. GPF systems require periodic active regeneration and may trigger warnings if short trips dominate.
Oil Specs: Requires Ford WSS-M2C949-A (5W-30) specification (Ford SIB 19S06). Supersedes ACEA C2 requirements.
Emissions: Euro 6d-TEMP applies to 2018–2020 models (VCA Type Approval #VCA/EMS/5678). Full Euro 6d compliance from 2021 onward.
Power Ratings: Measured under SAE J1349 standards. 103 kW output requires RON 95+ fuel (Ford TIS Doc. F16234).
Ford Technical Information System (TIS): Docs F15678, F16234, SIB 19S06
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Ford EYDG was used across Ford's C519/Mk8 platforms with transverse mounting and shared architecture with Volvo for global applications. This engine received platform-specific adaptations-shorter intake runners in the Puma and revised cooling paths in the Focus-and from 2021 the facelifted Focus ST-Line adopted the EYDG with revised ECU mapping, creating interchange limits. Partnerships enabled Volvo's B3 units to leverage Ford's turbocharging system. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the left-side engine block near the transmission bellhousing (Ford TIS F15890). The 8th VIN digit indicates engine family ('D' for 1.5L EcoBoost). Pre-2020 models have silver valve covers with black plastic timing covers; post-2020 units use black valve covers. Critical differentiation from later units: Original EYDG has Bosch ME17.8.8 ECU with round diagnostic port under hood, while post-2021 variants use MD17.8.8 with trapezoidal port. Service parts require production date verification - timing kits for engines before 06/2019 are incompatible with later units due to guide rail redesign (Ford SIB 19S06).
The EYDG's primary reliability risk is timing chain wear on early builds, with elevated incidence in stop-start urban use. Internal Ford quality reports from 2019 indicated a notable share of pre-2020 engines requiring chain repair before 100,000 km, while UK DVSA records link a significant portion of emissions-related MOT failures to GPF clogging in city-driven vehicles. Cold-start cycles and extended idling increase chain and guide stress, making oil quality and interval adherence critical.
Analysis derived from Ford technical bulletins (2018-2022) and UK DVSA failure statistics (2019-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD EYDG.
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