The Ford XMJB is a 1,999 cc, inline‑four turbocharged petrol engine produced between 2019 and 2024. It features a DOHC 16‑valve layout, gasoline direct injection (GDI), and a single twin‑scroll turbocharger. In standard form it delivered 177 kW (240 PS) at 5,500 rpm with 370 Nm of torque at 1,500–4,000 rpm, providing strong mid — range thrust and responsive performance across a broad rev range.
Fitted to models such as the Ford Focus ST (Mk4), Focus Active, and Kuga ST — Line,…
All production years (2019–2024) comply with Euro 6d emissions standards .
The Ford XMJB is a 1,999 cc inline‑four turbocharged petrol engine engineered for performance-oriented compact and crossover vehicles (2019–2024). It combines gasoline direct injection with a twin‑scroll turbocharger to deliver strong low-end and mid-range torque with crisp throttle response. Designed to meet Euro 6d emissions standards under real-driving conditions, it integrates a gasoline particulate filter and cooled EGR for full regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,999 cc | |
Fuel type | Petrol (Gasoline) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 87.5 mm × 83.1 mm | |
Power output | 177 kW (240 PS) @ 5,500 rpm | |
Torque | 370 Nm @ 1,500–4,000 rpm | |
Fuel system | High-pressure gasoline direct injection (up to 200 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled with electric auxiliary pump | |
Turbocharger | Single twin‑scroll turbo (BorgWarner B04) | |
Timing system | Chain-driven DOHC (front-mounted) | |
Oil type | Ford WSS‑M2C948‑B (SAE 5W‑30 synthetic) | |
Dry weight | 136 kg |
The Ford XMJB was used across Ford's C2 platform with transverse mounting and no external licensing. This engine received platform-specific adaptations—sport-tuned mounts and exhaust in the Focus ST, and enhanced cooling in the Kuga ST-Line—and from 2021 the HPFP cam follower was revised to address wear concerns, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The XMJB offers strong performance and efficiency but demands strict maintenance. HPFP cam follower wear is the top concern, especially with poor oil quality or extended intervals. Using Ford-specified 5W‑30 oil, adhering to 10,000 km changes, and choosing TOP TIER fuel greatly improve reliability. Many well-maintained examples exceed 150,000 km without major issues.
Top issues include HPFP cam follower wear (P0087), GPF saturation from short trips, turbo wastegate actuator failure, and timing chain tensioner rattle. These are documented in Ford TSB‑20‑0021 and related service updates. Most are preventable with proper maintenance and driving habits.
The XMJB powers the Ford Focus ST (Mk4, 2019–2024), Focus Active (2019–2022), and Kuga ST-Line (2020–2024). All are 240 PS variants. No cross-manufacturer usage is documented.
Aftermarket ECU tuning is common on the XMJB platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In a Focus ST: ~8.2 L/100km (34 mpg UK) combined. Real-world figures range from 30–38 mpg UK depending on driving style. Highway cruising can achieve ~6.5 L/100km (43 mpg UK), while aggressive driving drops below 28 mpg UK.
Yes. The XMJB is an interference design. If the timing chain fails or jumps, pistons can contact open valves, causing catastrophic engine damage. Regular inspection of chain tensioners and oil quality is essential.
Ford specifies WSS‑M2C948‑B (5W‑30) synthetic oil—a low-SAPS, ACEA C2/C3 formulation. This protects the HPFP, turbo, and GPF. Never use non-approved oils, as they may accelerate HPFP wear or cause GPF clogging.
Comprehensive technical documentation and regulatory references
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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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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.
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