The Ford STJC is a 1,499 cc, inline‑three turbo‑petrol engine produced between 2018 and 2024. It features direct fuel injection, a single twin — scroll turbocharger, and dual overhead camshafts (DOHC). In standard form it delivers 118–140 kW (160–190 PS) with torque figures between 240–270 Nm, enabling brisk urban and motorway performance.
Fitted to models such as the Fiesta ST, Puma ST, and Focus ST‑Line, the STJC was engineered for drivers seeking sporty responsivene…
All production years 2018–2024 meet Euro 6d TEMP or Euro 6d standards depending on registration date (VCA UK Type Approval #VCA/EMS/FORD-STJC-2020).
The Ford STJC is a 1,499 cc inline‑three turbo‑petrol engineered for compact performance hatchbacks and crossovers (2018–2024). It combines direct injection with a twin‑scroll turbocharger to deliver responsive mid‑range power and agile drivability. Designed to meet Euro 6d TEMP and Euro 6d standards, it balances sporty character with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,499 cc | |
Fuel type | Petrol (ULP 95 RON min) | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged (twin‑scroll) | |
Bore × stroke | 82.0 mm × 94.3 mm | |
Power output | 118–140 kW (160–190 PS) | |
Torque | 240–270 Nm @ 1,600–4,000 rpm | |
Fuel system | Bosch HDP6 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d TEMP (2018–2020); Euro 6d (2021–2024) | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled with dual‑circuit layout | |
Turbocharger | Single twin‑scroll (Honeywell Garrett) | |
Timing system | Chain (front‑mounted; low‑wear design) | |
Oil type | Ford WSS-M2C948-B1 (SAE 0W‑20) | |
Dry weight | 115 kg |
The Ford STJC was used across Ford's B‑Car and C‑Car platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the Fiesta ST and revised cooling in the Puma ST—and from 2021 the Focus ST‑Line adopted updated engine calibration and GPF strategies, creating minor ECU interchange limits. All adaptations are documented in OEM technical bulletins.
The STJC's primary reliability risk is high-pressure fuel pump (HPFP) degradation in early builds, with elevated incidence in hot climates or with inconsistent fuel quality. Ford internal data from 2020 indicated a measurable uptick in HPFP-related warranty claims for 2018–2020 models before 80,000 km, while UK DVSA records show minimal emissions-related MOT failures due to robust GPF management. Sustained high-load use without adequate fuel quality makes OEM-specified fuel and oil critical.
Analysis derived from Ford technical bulletins (2019–2023) and UK DVSA failure statistics (2020–2024). 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 STJC is generally robust when maintained properly. Early models (2018–2020) had HPFP concerns, but post-2021 revisions improved durability. Using 95+ RON fuel and correct 0W-20 oil significantly reduces wear. With regular servicing, most STJC engines exceed 200,000 km without major issues.
Key issues include high-pressure fuel pump wear (2018–2020), cylinder deactivation solenoid faults, GPF regeneration failures from short trips, and occasional turbo wastegate rattle. These are documented in Ford SIB 19M04 and TIS updates.
The STJC powers the Fiesta ST (2018–2023), Puma ST (2020–2024), and Focus ST-Line (2019–2024) with 1.5L EcoBoost branding. All are transverse-mounted in B- and C-platform vehicles and feature cylinder deactivation and GPF.
Yes. Stage 1 ECU remaps typically yield +20–30 kW safely, as the stock internals handle increased torque. However, tuning may accelerate HPFP wear if fuel quality is poor. Supporting mods like intercooler upgrades are recommended for stage 2+.
In a Fiesta ST, expect ~7.5 L/100km (city) and ~5.2 L/100km (highway), or ~40 mpg UK combined. Puma ST and Focus ST-Line see slightly higher consumption due to weight. Real-world mixed driving typically yields 38–45 mpg UK.
Yes. The STJC is an interference engine. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the chain is front-mounted and generally durable with proper oil maintenance.
Ford specifies 0W-20 synthetic oil meeting WSS-M2C948-B1. This low-SAPS oil protects the GPF and turbo bearings. Change intervals should not exceed 15,000 km or 12 months, especially with frequent short trips.
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.