The Ford EYDI – Petrol is a 999 cc, inline — three naturally aspirated engine produced between 2021 and 2025. It features single overhead camshaft (SOHC) architecture, port fuel injection (PFI), and Ti — VCT (Twin — independent Variable Cam Timing) for improved low — end torque and emissions control. Designed for compact urban vehicles, it delivers 50 kW (68 PS) and 98 Nm of torque, making it ideal for lightweight city driving and stop — start traffic conditions.
Fitted to mod…
All production years (2021–2025) comply with full Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/7890).
The Ford EYDI – Petrol is a 999 cc inline-three naturally aspirated engine engineered for compact city vehicles (2021–2025). It combines SOHC valvetrain architecture with PFI fuel delivery to deliver reliable urban performance and low CO₂ emissions. Designed to meet Euro 6d standards, it balances cost-effective ownership with everyday drivability in lightweight platforms.
| Parameter | Value | Source |
|---|---|---|
Displacement | 999 cc | |
Fuel type | Petrol | |
Configuration | Inline-3, SOHC, 12-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 71.0 mm × 84.0 mm | |
Power output | 50 kW (68 PS) @ 6,000 rpm | |
Torque | 98 Nm @ 4,250 rpm | |
Fuel system | Port fuel injection (PFI) | |
Emissions standard | Euro 6d | |
Compression ratio | 11.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing belt (replacement interval: 120,000 km or 8 years) | |
Oil type | Ford WSS-M2C949-B (5W-20) | |
Dry weight | 86 kg |
The Ford EYDI – Petrol was used across Ford's B399 platform with transverse mounting and no licensed external applications. This engine received platform-specific adaptations-shorter intake manifolds in the Ka+ and revised exhaust routing in the Fiesta Mk8-and from 2023 the facelifted models adopted updated timing belt tensioners to improve thermal durability, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The EYDI – Petrol's primary reliability risk is timing belt tensioner wear in early models, with elevated incidence in hot climates. Internal Ford quality reports from 2023 indicated over 12% of pre-2023 units in Mediterranean markets showed tensioner degradation by 90,000 km, while UK DVSA MOT data links a notable share of stalling failures to timing misalignment. High ambient temperatures and extended idling increase thermal stress, making periodic inspection and timely replacement critical.
Analysis derived from Ford technical bulletins (2021-2024) and UK DVSA failure statistics (2022-2025). Repair procedures should follow manufacturer guidelines.
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The EYDI – Petrol is generally reliable with regular maintenance. Early models (2021–2022) are prone to timing belt tensioner wear in hot climates, which can lead to belt slippage. Post-2023 revisions improved thermal durability, reducing this risk. The timing belt requires replacement every 120,000 km or 8 years. With correct oil (5W-20 Ford WSS-M2C949-B) and timely servicing, 120,000 km reliability is achievable.
The main issues are timing belt tensioner wear (especially pre-2023), hydraulic lash adjuster ticking on cold start, throttle body sticking, and coolant weepage from the water pump. These are documented in Ford service bulletins and addressed through updated parts and maintenance procedures. Tensioner replacement and correct oil use are key preventative measures.
This 1.0L petrol engine is used in the Fiesta Mk8 (2021–2025) and Ka+ (2021–2023). It powers base trims such as Studio and Ti-VCT, delivering 68 PS in compact city cars. All applications meet Euro 6d emissions standards, with post-2023 models featuring updated timing components for improved durability in high-temperature environments.
Limited tuning potential exists due to naturally aspirated design and PFI. ECU remaps offer minimal gains (3–5 kW) by optimizing throttle response and fuel curves. Meaningful power increases require forced induction upgrades, which are not OEM-supported. Most owners focus on maintenance and intake cleaning to restore factory performance rather than increasing output.
In combined driving, the EYDI achieves approximately 5.2–5.6 L/100km (54–50 mpg UK). City driving may see 6.0–6.5 L/100km (47–43 mpg), while highway runs can reach 4.8 L/100km (59 mpg). Real-world figures depend on driving style, with aggressive use reducing efficiency due to the engine's narrow torque band.
Yes. The EYDI – Petrol is an interference engine. If the timing belt fails or jumps, piston-to-valve contact is likely, resulting in severe internal damage. The belt must be replaced every 120,000 km or 8 years, whichever comes first, to prevent costly repairs. Any abnormal noise from the timing cover should be investigated immediately.
Ford specifies 5W-20 synthetic oil meeting WSS-M2C949-B standard. This low-viscosity formulation ensures proper lubrication of the timing belt tensioner and hydraulic lash adjusters. Oil changes should occur every 15,000 km or 12 months to prevent sludge and maintain valve train health.
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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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