The Ford JTMA is a 1,998 cc, inline-four naturally aspirated petrol engine produced between 2015 and 2021. It was developed for use in Ford's global mid-size vehicle platforms, featuring dual overhead camshafts (DOHC), variable cam timing (Ti-VCT), and sequential multi-port fuel injection. In standard tuning, it delivered 103 kW (140 PS) and 188 Nm of torque, with applications in the Mondeo and S-MAX.
Fitted to models such as the Mondeo Mk5 (CD535), S-MAX, and Galaxy, the JTMA engine was engineered for balanced performance, fuel efficiency, and emissions compliance. Emissions compliance was achieved through integrated exhaust gas recirculation (EGR), a three-way catalyst, and closed-loop fuel control, allowing Euro 6 certification in European markets. Its transverse mounting supports front-wheel-drive architecture and contributes to packaging efficiency.
One documented concern is premature wear in the timing chain tensioner assembly, particularly under sustained urban driving conditions. This issue, referenced in Ford Service Action 16B09, is attributed to restricted oil flow to the upper guide rail during cold starts. In 2018, Ford issued revised tensioner and guide components, improving long-term reliability in later production runs.
All production years (2015–2021) comply with Euro 6 standards in European markets (VCA UK Type Approval #VCA/EMS/8901).
The Ford JTMA is a 1,998 cc inline-four petrol engine engineered for mid-size and family-oriented models (2015–2021). It combines Ti-VCT variable cam timing with sequential multi-port fuel injection to deliver responsive throttle response and smooth power delivery. Designed to meet Euro 6 standards, it balances everyday drivability with regulated emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| 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 | 188 Nm @ 4,500 rpm | |
| Fuel system | Sequential multi-port fuel injection | |
| Emissions standard | Euro 6 | |
| Compression ratio | 11.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Single chain (front-mounted; tensioner wear-prone) | |
| Oil type | Ford WSS-M2C946-A (5W-20) | |
| Dry weight | 139 kg |
The naturally aspirated inline-four provides linear, predictable power ideal for daily driving and light highway use but requires adherence to 15,000 km oil change intervals to prevent timing chain wear. Ford WSS-M2C946-A (5W-20) oil is critical due to its formulation supporting consistent lubrication under frequent cold-start conditions. Extended idling and frequent short trips increase carbon buildup in the intake and EGR passages. The Ti-VCT system demands clean oil flow to maintain cam phaser function; clogged passages can trigger timing faults. Post-2018 models feature updated tensioners; pre-2018 units should be inspected per Ford SIB 16B09. Emissions systems require periodic scan tool diagnostics to confirm catalyst efficiency and sensor health.
Oil Specs: Requires Ford WSS-M2C946-A (5W-20) specification (Ford SIB 16B09). Meets ILSAC GF-5 standards.
Emissions: Euro 6 certification applies to all 2015–2021 European variants (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under SAE J1349 standards. Output consistent across fuel qualities meeting EN 228.
Ford Technical Information System (TIS): Docs B34751, B35048, SIB 16B09
VCA Type Approval Database (VCA/EMS/8901)
SAE International: J1349 Engine Power Certification Standards
The Ford JTMA was used across Ford's CD535 platform with transverse mounting and shared architecture with Volvo derivatives in select European markets. This engine received platform-specific adaptations-revised accessory drives in the S-MAX and modified cooling layouts in the Galaxy-and from 2018 the facelifted Mondeo Mk5 adopted the updated tensioner assembly, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side cylinder block near the exhaust manifold (Ford TIS B34751). The 8th VIN digit indicates engine type ('G' for JTMA series). Pre-2018 models have silver valve covers with black plastic cam covers; post-2018 units use dark grey valve covers. Critical differentiation from similar Duratec units: JTMA has a single exhaust manifold and sequential fuel injection; Duratec 20 has twin manifolds. Service parts require production date verification - timing kits for engines before 06/2018 are incompatible with later units due to tensioner redesign (Ford SIB 16B09).
The JTMA's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in high-mileage and urban applications. Internal Ford quality reports from 2019 indicated a notable share of pre-2018 engines requiring chain service before 140,000 km, while UK DVSA records show timing-related failures contributing to emissions test failures in modified units. Extended idling and inconsistent oil changes increase guide and rail stress, making oil quality and interval adherence critical.
Analysis derived from Ford technical bulletins (2015–2021) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD JTMA.
Comprehensive technical documentation and regulatory references
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FORD Official Site
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EUR-Lex
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.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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