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 responsiveness and compact efficiency. Emissions compliance was achieved through gasoline particulate filtration (GPF) and precise fuel metering, meeting Euro 6d TEMP and later Euro 6d standards across its production run.
One documented concern is high-pressure fuel pump (HPFP) wear under sustained high-load conditions, highlighted in Ford Service Bulletin 19M04. This issue stems from thermal stress and fuel lubricity limitations, particularly in markets with inconsistent fuel quality. From 2021, Ford introduced revised HPFP internals and updated calibration strategies.
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 twin-scroll turbo provides immediate throttle response ideal for spirited driving but demands consistent use of 95 RON (or higher) unleaded petrol to prevent knock and HPFP wear. Ford WSS-M2C948-B1 (0W-20) oil is essential due to its low-SAPS formulation protecting the GPF and turbo bearings. Extended oil change intervals beyond 15,000 km may accelerate HPFP wear, especially in hot climates or frequent short trips. The GPF requires periodic highway driving (>60 km/h for 20+ minutes) to enable passive regeneration. Pre-2021 engines should be inspected for HPFP wear per Ford SIB 19M04.
Oil Specs: Requires Ford WSS-M2C948-B1 (0W-20) specification (Ford Owner’s Manual). Supersedes ACEA C5 requirements.
Emissions: Euro 6d TEMP applies to 2018–2020 models; Euro 6d applies to 2021–2024 (VCA Type Approval #VCA/EMS/FORD-STJC-2020).
Power Ratings: Measured under ISO 1585 standards. 140 kW output requires 98 RON fuel for optimal calibration (Ford TIS Doc. CAL-1499-HI).
Ford Technical Information System (TIS): Docs ENG-STJC-01, ENG-TURBO-1499, SIB 19M04
VCA Type Approval Database (VCA/EMS/FORD-STJC-2020)
ISO 1585: Road vehicles — Engine test code
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.
Locate the engine code stamped on the front timing cover near the oil filter housing (Ford TIS ENG-ID-1499). The 7th VIN digit indicates engine displacement ('5' for 1.5L EcoBoost). All STJC units feature a black plastic cam cover with '1.5 EcoBoost' branding. Critical differentiation from earlier 1.5L EcoBoost (non-ST): STJC has twin-scroll turbo (single exhaust downpipe), GPF, and cylinder deactivation hardware. ECU part numbers beginning with 'HC3T' denote STJC variants. Pre-2021 HPFPs (Bosch 0 261 510 015) differ from post-2021 (0 261 510 022) and are not interchangeable (Ford SIB 19M04).
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.
Find answers to most commonly asked questions about FORD STJC.
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