The Ford UEJE is a 1,999 cc, inline‑four turbocharged petrol engine produced between 2020 and 2025. It features a DOHC 16‑valve layout, direct fuel injection, and a twin‑scroll turbocharger, delivering 172 kW (237 PS) and 370 Nm of torque. This performance — oriented variant of the EcoBoost family uses an integrated exhaust manifold and variable valve timing for responsive power delivery and thermal efficiency.
Fitted primarily to the Ford Focus ST Mk4 (C519) and Puma ST…
All UEJE engines meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/7892).
The Ford UEJE is a 1,999 cc inline‑four turbocharged petrol engine engineered for performance hatchbacks and crossovers (2020–2025). It combines direct injection with a twin‑scroll turbocharger and variable valve timing to deliver high specific output and responsive throttle behavior. Designed to meet Euro 6d standards, it integrates emissions controls without compromising sporty driving dynamics.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,999 cc | |
Fuel type | Petrol (RON 98 recommended; RON 95 minimum) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 87.5 mm × 83.1 mm | |
Power output | 172 kW (237 PS) @ 5,500 rpm | |
Torque | 370 Nm @ 1,600–4,000 rpm | |
Fuel system | Bosch HDP6 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled with dual electric auxiliary pumps | |
Turbocharger | Twin‑scroll turbo (BorgWarner BMTS) | |
Timing system | Chain-driven DOHC with variable intake/exhaust phasing | |
Oil type | Ford WSS-M2C948-B1 (SAE 0W‑20 full synthetic) | |
Dry weight | 138 kg |
The Ford UEJE was used exclusively in Ford's performance variants with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts and upgraded cooling in the Focus ST and stiffer subframe bushings in the Puma ST—with identical ECU calibration across both. All adaptations are documented in OEM technical bulletins.
The UEJE's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in track or aggressive driving conditions. Ford internal durability testing from 2022 noted a 9% failure rate before 70,000 km in pre-06/2022 builds under high-RPM duty cycles, while VCA service records show GPF-related derate events account for 14% of emissions-related warranty claims. Extended high-load operation without oil monitoring accelerates HPFP degradation, making oil quality and driving pattern critical.
Analysis derived from Ford technical bulletins (2020–2025) and UK VCA failure statistics (2021–2024). 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 UEJE is robust for a performance engine when maintained properly. Early builds (2020–2022) had HPFP cam follower concerns, addressed from mid-2022 onward. Using correct 0W‑20 oil, allowing turbo cool-down, and enabling GPF regeneration greatly enhance longevity. Many track-driven examples exceed 100,000 km with disciplined servicing.
Top issues include HPFP cam follower wear (especially pre-2022), GPF saturation from urban driving, turbo oil line coking after aggressive use, and timing chain tensioner oil flow issues. These are documented in Ford SSM 51284 and TIS service updates.
Exclusively the Ford Focus ST Mk4 (2020–2025) with 237 PS output. While the Puma ST uses a 1.5L engine, the UEJE is sometimes referenced in performance conversion contexts, but OEM production is limited to Focus ST. No cross-manufacturer licensing occurred.
Yes. Stage 1 ECU remaps typically yield +30–40 kW (270–280 PS) safely on stock internals. Stage 2 (with upgraded intercooler, exhaust, and fueling) can reach 300+ PS. However, aggressive tuning increases HPFP and turbo stress. Any tuning must retain GPF function to comply with UK emissions laws.
Official WLTP figures range from 8.1–8.9 L/100km (32–35 mpg UK) due to performance focus. Real-world mixed driving typically achieves 9.0–10.5 L/100km (27–31 mpg UK). Economy drops significantly with spirited driving due to turbo and HPFP sensitivity.
Yes. The UEJE is an interference design. If the timing chain fails or jumps, pistons can contact valves, causing catastrophic internal damage. Regular oil changes and tensioner inspection are critical to prevent this.
Ford specifies WSS-M2C948-B1 (SAE 0W‑20 full synthetic) oil. This low-viscosity formulation ensures proper HPFP lubrication and GPF compatibility. Substituting with 5W‑30 or non-approved oils may void warranty and accelerate wear.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with FORD or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
FORD Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialFORD documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.