The Ford F46A is a 1,999 cc, inline-four, naturally aspirated petrol engine produced between 2012 and 2018. It belongs to Ford's Sigma engine family, featuring dual overhead camshafts (DOHC), 16-valve configuration, and Ti-VCT (Twin-independent Variable Cam Timing). In standard tune, it delivered 103 kW (140 PS) and 187 Nm of torque, offering a balance of responsive performance and fuel efficiency for mid-size applications.
Fitted to models including the Mondeo Mk5, S-MAX, and Galaxy, the F46A was engineered for comfortable highway cruising and family-oriented driving duties. Its emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, meeting Euro 5 standards across its production run. The engine's longitudinal mounting and refined NVH characteristics made it suitable for Ford's D-segment vehicles.
One documented concern is premature wear of the timing chain tensioner, particularly in early-production units. This issue, referenced in Ford Service Action 14B07, is attributed to material fatigue under thermal cycling and delayed oil changes. From 2015 onward, Ford implemented a revised tensioner design and updated oil service intervals to mitigate risk.
All production years 2012–2018 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5679).
The Ford F46A is a 1,999 cc inline-four petrol engine engineered for mid-size passenger vehicles (2012–2018). It combines Ti-VCT variable valve timing with multi-point fuel injection to deliver smooth mid-range power and efficient operation. Designed to meet Euro 5 standards, it supports Ford's strategy of refined, cost-effective powertrains for family and fleet applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,999 cc | |
| Fuel type | Petrol (Unleaded, 95 RON) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.5 mm × 93.2 mm | |
| Power output | 103 kW (140 PS) @ 6,500 rpm | |
| Torque | 187 Nm @ 4,500 rpm | |
| Fuel system | Multi-point fuel injection (MPI) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 11.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing chain (front-mounted) | |
| Oil type | Ford WSS-M2C913-D (5W-30) | |
| Dry weight | 128 kg |
The naturally aspirated design offers predictable throttle response ideal for highway driving but requires strict adherence to 15,000 km oil change intervals to prevent timing chain wear. Ford WSS-M2C913-D (5W-30) oil is essential due to its thermal stability and protection of the front-mounted chain system. Extended idling and frequent short trips increase carbon buildup on intake valves, necessitating periodic cleaning. The MPI system is robust but sensitive to low-octane fuel, which can cause pre-ignition under load. Post-2015 models feature upgraded tensioner materials; pre-2015 units should be inspected per Ford SIB 14B07. Catalytic converter longevity depends on consistent lambda sensor function and exhaust leak prevention.
Oil Specs: Requires Ford WSS-M2C913-D (5W-30) specification (Ford SIB 14B07). Compatible with ACEA A1/B1.
Emissions: Euro 5 certification applies to all 2012–2018 models (VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under ECE R85 standards. Output varies slightly with ambient temperature and fuel quality (Ford TIS Doc. F12501).
Ford Technical Information System (TIS): Docs F11871, F12004, SIB 14B07
VCA Type Approval Database (VCA/EMS/5679)
ISO 1585:1996 Road vehicles — Test method for the measurement of specific power
The Ford F46A was used across Ford's Mondeo Mk5, S-MAX, and Galaxy platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-longer intake manifolds in the Mondeo and revised ECU tuning in the S-MAX-and from 2015 the facelifted Mondeo Mk5.5 adopted minor emissions updates, 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 transmission bellhousing (Ford TIS F11891). The 8th VIN digit indicates engine type ('J' for F46A series). Pre-2015 models have silver valve covers with ribbed finish; post-2015 units use dark grey covers. Critical differentiation from Duratec variants: F46A uses a front-mounted timing chain with external tensioner access, while Duratec HE uses a rear-mounted chain. Service parts require model-year verification - timing kits for pre-2015 engines are incompatible with post-facelift units due to guide redesign (Ford SIB 14B07).
The F46A's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in urban stop-start driving. Internal Ford quality reports from 2016 indicated a measurable share of pre-2015 engines exhibiting chain noise before 100,000 km, while UK DVSA records show increased catalytic converter failures in high-mileage Mondeo units. Short trips and delayed oil changes accelerate wear, making oil quality and interval adherence critical.
Analysis derived from Ford technical bulletins (2013–2017) and UK DVSA failure statistics (2015–2021). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD F46A.
Comprehensive technical documentation and regulatory references
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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