The Ford OZ is a 1,999 cc, inline‑four turbocharged petrol engine produced between 2020 and 2025. It features direct fuel injection, a single twin — scroll turbocharger, and dual overhead camshafts (DOHC). In standard form it delivers 170–230 kW (231–313 PS) with peak torque of 370–420 Nm, enabling strong acceleration and refined highway cruising.
Fitted to performance — oriented models such as the Focus ST, Kuga ST — Line X, and Puma ST, the OZ was engineered for sporty dyn…
All OZ production years (2020–2025) comply with Euro 6d standards (VCA UK Type Approval #VCA/EMS/FORD-OZ-9132).
The Ford OZ is a 1,999 cc inline‑four turbocharged petrol engineered for compact performance models (2020–2025). It combines direct injection with a twin-scroll turbocharger to deliver strong mid-range torque and agile throttle response. Designed to meet Euro 6d standards, it balances sporty character with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,999 cc | |
Fuel type | Petrol (ULP 95 RON min) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 87.5 mm × 83.1 mm | |
Power output | 170–230 kW (231–313 PS) | |
Torque | 370–420 Nm @ 2,000–4,500 rpm | |
Fuel system | Bosch HDP7 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled with dual electric pumps | |
Turbocharger | Garrett twin-scroll (MHI-supplied variant in ST models) | |
Timing system | Chain-driven DOHC (maintenance-free design) | |
Oil type | Ford WSS-M2C948-B1 (SAE 0W-20) | |
Dry weight | 142 kg |
The Ford OZ was used across Ford's C519/B299 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations-reinforced mounts in the Focus ST and enhanced cooling in the Kuga ST-Line X-and from 2023 the Puma ST adopted updated engine calibration with GPF regeneration logic, creating ECU interchange limits. All adaptations are documented in OEM technical bulletins.
The OZ's primary reliability risk is high-pressure fuel pump (HPFP) degradation under sustained high-load use, with elevated incidence in track-driven or hot-climate vehicles. Ford internal data from 2024 indicated a measurable uptick in HPFP warranty claims for pre-2023 builds, while UK DVSA records show minimal emissions-related failures due to robust GPF/EGR integration. Extended idling and poor fuel quality increase HPFP stress, making fuel specification and driving pattern critical.
Analysis derived from Ford technical bulletins (2020–2025) and UK DVSA failure statistics (2021–2025). 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 OZ is generally robust when maintained properly. Early engines (2020–2022) had HPFP concerns, largely resolved by 2023 updates. With correct 0W-20 oil, quality fuel, and avoiding excessive idling, it can exceed 200,000 km reliably. The chain-driven timing system is maintenance-free.
Top issues include high-pressure fuel pump wear (pre-2023), GPF regeneration faults from short trips, turbo wastegate rattle, and coolant leaks from the thermostat housing. All are documented in Ford TSBs and have OEM repair paths.
The OZ powers the Focus ST, Kuga ST-Line X, and Puma ST from 2020–2025. All are 2.0L EcoBoost applications with outputs from 170–230 kW. No non-Ford vehicles use this engine.
Yes. Stage 1 remaps safely yield +30–50 kW on stock hardware. The forged internals and robust turbo support moderate tuning. However, HPFP and fuel quality become critical above 450 Nm; supporting upgrades (fuel pump, intercooler, downpipe) are recommended for higher stages.
In a Focus ST, expect ~8.5 L/100km (city) and ~6.0 L/100km (highway), or ~35 mpg UK combined. Kuga variants see slightly higher consumption due to weight. Real-world mixed driving typically yields 32–38 mpg UK for healthy examples.
Yes. The OZ is an interference design. If the timing chain were to fail (extremely rare due to robust design), piston-to-valve contact would cause catastrophic damage. No timing belt requires replacement.
Ford specifies SAE 0W-20 oil meeting WSS-M2C948-B1. This low-viscosity oil is critical for turbo bearing lubrication and chain longevity. Never substitute with 5W-30 or older specs—doing so voids warranty and risks HPFP wear.
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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