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 engine…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The XUJN offers strong performance and modern efficiency, but is susceptible to HPFP wear and GPF saturation if not properly maintained. With timely oil changes using Ford-specified 5W-30 and regular highway driving to regenerate the GPF, it can reliably exceed 200,000 km. Avoid aggressive tuning without supporting fuel system upgrades.
Top issues include high-pressure fuel pump wear, GPF saturation from short trips, cylinder deactivation solenoid faults, and turbo actuator calibration drift. These are documented in Ford Service Bulletin SSM 51203 and TIS updates. Most are preventable with correct maintenance and driving habits.
The XUJN powers the Focus Mk4 (2018–2024), Kuga Mk3 (2019–2024), and Puma (2019–2024), all with the 1.5L EcoBoost 182 PS variant. It features cylinder deactivation and a GPF for Euro 6d compliance. It was never used in commercial vehicles or licensed to other manufacturers.
Yes, but with caution. Stage 1 remaps typically yield +20–25 kW (27–34 PS), but the stock HPFP and turbo are near their limits. Aggressive tuning without upgrading the fuel pump or injectors risks premature HPFP failure. Always use RON 98 fuel and monitor GPF loading post-tune.
In a Focus 1.5 EcoBoost 182 PS, real-world consumption is ~7.8 L/100km (city) and ~5.4 L/100km (highway), or about 38 mpg UK combined. Mixed driving typically yields 35–42 mpg (UK). Economy suffers if the GPF is saturated or if driven aggressively in urban conditions.
Yes. The XUJN is an interference engine. If the timing chain fails (extremely rare due to robust design), pistons can contact open valves, causing severe internal damage. However, the chain is designed for life and requires no scheduled replacement if oil is maintained properly.
Ford specifies SAE 5W-30 oil meeting WSS-M2C948-B (low-SAPS, ACEA C2/C3). This protects the GPF, turbo, and HPFP. Change every 16,000 km or annually. Never use non-approved oils, as they can accelerate HPFP wear and cause GPF blockage.
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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