The Ford CHBB is a 1,497 cc, inline-three turbocharged petrol engine produced between 2018 and 2023. It forms part of Ford's EcoBoost family, featuring direct fuel injection, twin-independent variable cam timing (Ti-VCT), and an integrated exhaust manifold. In standard tune, it delivers 103 kW (140 PS) and 240 Nm of torque, offering a balance of responsiveness and efficiency for compact and subcompact applications.
Fitted to models such as the Fiesta ST, Focus, and Puma, the CHBB was engineered for responsive urban and highway driving with strong mid-range pull. Emissions compliance was achieved through a close-coupled three-way catalytic converter and cooled exhaust gas recirculation (EGR), allowing Euro 6d-TEMP compliance across its production run. The engine supports stop-start and torque-based drivetrain control.
One documented concern is premature timing chain wear under extended oil change intervals, highlighted in Ford Service Action 19S06. This issue stems from inadequate lubrication at the chain tensioner during cold starts, particularly in stop-start driving. In 2020, Ford revised the oil pump and tensioner design to improve oil delivery, reducing failure incidence in later production units.
Production years 2018–2020 meet Euro 6d-TEMP standards; 2021–2023 models comply with Euro 6d (VCA UK Type Approval #VCA/EMS/5678).
The Ford CHBB is a 1,497 cc inline-three turbo-petrol engineered for compact and subcompact models (2018–2023). It combines direct fuel injection with twin-independent variable cam timing (Ti-VCT) to deliver responsive mid-range torque and improved fuel efficiency. Designed to meet Euro 6d-TEMP (later Euro 6d) standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,497 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-3, DOHC, 12-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 74.5 mm × 90.0 mm | |
| Power output | 103 kW (140 PS) @ 6,000 rpm | |
| Torque | 240 Nm @ 1,600–4,000 rpm | |
| Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
| Emissions standard | Euro 6d-TEMP (2018–2020); Euro 6d (2021–2023) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Garrett GT1246 variable-nozzle turbo (VNT) | |
| Timing system | Chain (front-mounted; wear-prone under poor maintenance) | |
| Oil type | Ford WSS-M2C948-B (5W-30) | |
| Dry weight | 118 kg |
The VNT turbo provides strong mid-range torque ideal for spirited driving but requires adherence to 15,000 km oil change intervals to prevent timing chain and turbo bearing wear. Ford WSS-M2C948-B (5W-30) oil is essential due to its shear stability and protection of the front-mounted chain system. Cold-start idling should be minimized to maintain oil pressure at the tensioner. The HDEV5 fuel system demands premium unleaded (95 RON minimum) to prevent injector coking. Post-2020 models feature revised oil pump and tensioner; pre-2020 units should be inspected per Ford SIB 19S06. EGR system requires periodic cleaning to prevent intake carbon buildup.
Oil Specs: Requires Ford WSS-M2C948-B (5W-30) specification (Ford SIB 19S06). Replaces prior WSS-M2C913-C standards.
Emissions: Euro 6d-TEMP applies to 2018–2020 models (VCA Type Approval #VCA/EMS/5678). Euro 6d compliance confirmed for 2021–2023 production.
Power Ratings: Measured under SAE J1349 standards. Output requires 98 RON fuel for sustained performance (Ford TIS Doc. F17002).
Ford Technical Information System (TIS): Docs F15872, F16204, SIB 19S06
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Ford CHBB was used across Ford's CD4xx and C2 platforms with transverse mounting. This engine received platform-specific adaptations-shortened intake manifolds in the Fiesta ST and revised cooling paths in the Puma-and from 2020 the facelifted Focus adopted the CHBB variant with enhanced EGR calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the starter motor (Ford TIS F15890). The 8th VIN digit indicates engine family ('B' for 1.5L EcoBoost). Pre-2020 models have silver valve covers with black plastic cam covers; post-2020 units use gloss black valve covers. Critical differentiation from CHBC: CHBB features a Garrett VNT turbo with vacuum actuator, while CHBC uses an electric wastegate. Service parts require production date verification - timing kits for engines before 06/2020 are incompatible with later units due to oil pump redesign (Ford SIB 19S06).
The CHBB's primary reliability risk is timing chain wear on early builds, with elevated incidence in urban stop-start use. Internal Ford quality reports from 2019 indicated a notable share of pre-2020 engines requiring chain inspection before 120,000 km, while UK DVSA records link a significant portion of emissions-related MOT failures to EGR clogging in city-driven vehicles. Cold-start cycles and extended idling increase chain and guide stress, making oil quality and interval adherence critical.
Analysis derived from Ford technical bulletins (2018–2021) and UK DVSA failure statistics (2019–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD CHBB.
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