The Ford XUJN is a 1,499 cc, inline‑four turbo‑petrol engine produced between 2018 and 2024. It features direct fuel injection, a single twin-scroll turbocharger, dual overhead camshafts (DOHC), and cylinder deactivation (ACT) for improved part-load efficiency. In standard applications it delivers 134 kW (182 PS) and 240 Nm of torque, with responsive performance across the rev range.
Fitted to models such as the Focus Mk4 (C519), Kuga Mk3, and Puma, the XUJN was engineered to balance sporty drivability with modern emissions compliance. Emissions control is achieved through cooled exhaust gas recirculation (EGR), a gasoline particulate filter (GPF), and a close-coupled three-way catalyst, enabling full Euro 6d compliance across all production years.
One documented concern is high-pressure fuel pump (HPFP) wear under sustained high-load conditions, highlighted in Ford Service Bulletin SSM 51203. This can manifest as hard starts or loss of power. From 2021, Ford introduced an updated HPFP design with improved cam follower durability to address premature wear.
All production years (2018–2024) meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/FD2018XUJN).
The Ford XUJN is a 1,499 cc inline‑four turbo‑petrol engineered for compact and crossover models (2018–2024). It combines gasoline direct injection with a twin‑scroll turbocharger and cylinder deactivation to deliver brisk acceleration and reduced CO₂ under light loads. Designed to meet Euro 6d standards, it integrates a gasoline particulate filter for urban emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,499 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged (twin‑scroll) | |
| Bore × stroke | 71.9 mm × 92.0 mm | |
| Power output | 134 kW (182 PS) | |
| Torque | 240 Nm @ 1,600–4,000 rpm | |
| Fuel system | High-pressure direct injection (up to 250 bar) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin‑scroll (Honeywell Garrett) | |
| Timing system | Chain (front‑mounted; maintenance-free design) | |
| Oil type | Ford WSS‑M2C948‑B (SAE 5W‑30) | |
| Dry weight | 130 kg |
The twin-scroll turbo and cylinder deactivation provide responsive performance and improved urban efficiency but require high-quality RON 95 fuel to prevent injector coking and GPF saturation. Ford WSS-M2C948-B (5W-30) oil is essential due to its low-SAPS formulation, which protects the GPF and timing chain. Extended oil change intervals beyond 16,000 km may accelerate HPFP wear, especially in hot climates or frequent short trips. Post-2021 engines feature an upgraded HPFP with enhanced cam follower; pre-2021 units should be monitored for hard starts or P0087 codes.
Oil Specs: Requires Ford WSS-M2C948-B (5W-30) specification (Ford SSM 51203). Equivalent to ACEA C2/C3 low-SAPS standards.
Emissions: Euro 6d certification applies to all XUJN production years (2018–2024) (VCA Type Approval #VCA/EMS/FD2018XUJN).
Power Ratings: Measured under ISO 1585 standards. Power output assumes RON 95 fuel (Ford TIS Doc. T18XUJN).
Ford Technical Information System (TIS): Docs T18XUJN, F18‑XUJN
Ford Service Shop Manual (SSM) 51203
VCA Type Approval Database (VCA/EMS/FD2018XUJN)
ISO 1585: Road vehicles — Engine test code
The Ford XUJN was used across Ford's C519/CD539 platforms with transverse mounting and no external licensing. This engine received platform-specific calibrations—revised cooling in the Kuga and torque-limiting software in the Puma ST-Line—and from 2021 the updated HPFP design created minor hardware interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Ford TIS T18XUJN). The 8th VIN digit indicates engine displacement ('J' for 1.5L EcoBoost). All XUJN units use black plastic valve covers with '1.5 EcoBoost' branding and include a gasoline particulate filter (visible in exhaust routing). Critical differentiation from XUJA: XUJN features cylinder deactivation and GPF, and ECU part numbers begin with '18Dxxx' (pre-2021) or '21Dxxx' (post-update). Software and HPFP units are not interchangeable without matching calibration.
The XUJN's primary reliability risk is high-pressure fuel pump wear under high-load or high-temperature conditions, with elevated incidence in performance-oriented or hot-climate use. Ford internal data (2022) noted increased warranty claims for HPFP failure before 80,000 km in modified or frequently tracked vehicles, while UK DVSA records show minimal MOT failures linked to this engine. Extended oil change intervals and low-quality fuel amplify HPFP and GPF issues, making maintenance adherence critical.
Analysis derived from Ford technical bulletins (2018–2024) and UK DVSA failure statistics (2019–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD XUJN.
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