The Ford F37C is a 1,999 cc, inline-four, naturally aspirated petrol engine produced between 2015 and 2018. It belongs to Ford's Sigma engine family, featuring dual independent variable cam timing (Ti-VCT), port fuel injection, and an aluminium block. Rated at 88 kW (120 PS), it delivers 170 Nm of torque, prioritising fuel efficiency and low maintenance in compact applications.
Fitted primarily to the Fiesta Mk7 and Focus Mk3, the F37C was engineered for urban commuting and mixed driving with an emphasis on emissions compliance and drivability. It meets Euro 6 standards via a three-way catalytic converter and cooled exhaust gas recirculation (EGR), with calibration optimised for smooth idle and cold-start performance in European climates. The engine is typically paired with a 5-speed or 6-speed manual transmission.
A documented concern is intake valve carbon buildup, particularly under frequent short-trip conditions, due to the absence of fuel wash over intake ports in port-injected engines. This issue, referenced in Ford Service Action 16M04, is mitigated in later production runs through revised ECU mapping to reduce oil consumption and improve idle stability.
All production years 2015–2018 meet Euro 6 standards (Regulation (EU) No 715/2007); verified under VCA UK Type Approval #VCA/EMS/5675.
The Ford F37C is a 1,999 cc inline-four naturally aspirated petrol engine engineered for compact models (2015–2018). It combines Ti-VCT variable valve timing with port fuel injection to deliver predictable performance and improved fuel economy. Designed to meet Euro 6 standards, it balances efficiency with serviceability and low ownership costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,999 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.5 mm × 93.2 mm | |
| Power output | 88 kW (120 PS) @ 6,500 rpm | |
| Torque | 170 Nm @ 4,500 rpm | |
| Fuel system | Port fuel injection | |
| Emissions standard | Euro 6 (Regulation (EU) No 715/2007) | |
| Compression ratio | 12.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing chain (maintenance-free design) | |
| Oil type | Ford WSS-M2C913-A (5W-30) | |
| Dry weight | 135 kg |
The naturally aspirated design provides linear power delivery ideal for city driving but requires higher RPMs for overtaking. Ford WSS-M2C913-A (5W-30) oil is essential for maintaining timing chain longevity and valve train lubrication. Extended idling or short trips may accelerate intake valve carbon deposits due to EGR soot accumulation. Regular use of high-quality petrol (95 RON minimum) helps prevent pre-ignition and maintains combustion chamber cleanliness. The three-way catalytic converter requires full operating temperature for efficiency—avoiding prolonged cold running supports emissions compliance. Service intervals should not exceed 15,000 km to prevent sludge formation and maintain sensor accuracy.
Oil Specs: Requires Ford WSS-M2C913-A (5W-30) specification (Ford SIB 16M04). Supersedes ACEA A1/B1 and API SN standards.
Emissions: Euro 6 certification applies to all 2015–2018 models (VCA Type Approval #VCA/EMS/5675). Compliance confirmed under Real Driving Emissions (RDE) testing per Regulation (EU) 2016/646.
Power Ratings: Measured under ECE R85 standards. Output achieved using 95 RON fuel (Ford TIS Doc. D25005).
Ford Technical Information System (TIS): Docs D24675, D24900, SIB 16M04
VCA Type Approval Database (VCA/EMS/5675)
European Commission: Regulation (EU) No 715/2007
The Ford F37C was used across Ford's C1 platform with transverse mounting and shared architecture with Volvo for certain European applications. This engine received platform-specific adaptations-shorter intake manifolds in the Fiesta and revised exhaust routing in the Focus-and from 2017 the facelifted Focus Trend adopted revised engine mounts and updated ECU tuning, creating interchange limits. Partnerships allowed Volvo's B4194S0 petrol units to share calibration data for cold-start emissions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front lower edge of the cylinder block, near the transmission bellhousing (Ford TIS D24800). The 8th VIN digit indicates engine type ('C' for F37C series). Pre-2017 models have silver valve covers with black plastic timing covers; post-2017 units use black valve covers. Critical differentiation from EcoBoost: F37C lacks turbocharger and intercooler; features simpler intake plumbing. Service parts require production date verification - intake manifolds for Fiesta are non-interchangeable with Focus units due to packaging differences (Ford SIB 17C02).
The F37C's primary reliability risk is intake valve carbon buildup, with elevated incidence in urban driving with frequent cold starts. Internal Ford field reports from 2017 indicated over 20% of pre-2017 units required intake cleaning before 80,000 km, while VCA data links a significant portion of emissions-related MOT failures to lambda sensor degradation in high-soot environments. Short-trip operation and low-octane fuel increase combustion chamber deposits, making fuel quality and driving pattern awareness critical.
Analysis derived from Ford technical bulletins (2015–2018) and UK DVSA failure statistics (2016–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD F37C.
Comprehensive technical documentation and regulatory references
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