The Ford RFN is a 1,499 cc, inline‑three turbo‑petrol engine produced between 2020 and 2024. It features a DOHC 12‑valve layout, direct fuel injection, and a single twin‑scroll turbocharger. In standard tune it delivers 110 kW (150 PS) and 240 Nm of torque, optimized for responsive urban driving and efficient highway cruising.
Fitted primarily to the Mk4 Puma and select Fiesta variants, the RFN was engineered for compact SUV and hatchback applications requiring a balanc…
All production years (2020–2024) meet Euro 6d standards .
The Ford RFN is a 1,499 cc inline‑three turbo‑petrol engineered for compact SUVs and hatchbacks (2020–2024). It combines direct injection with a twin‑scroll turbocharger to deliver responsive performance and compact packaging. Designed to meet Euro 6d, it balances sporty character with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,499 cc | |
Fuel type | Petrol | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged (twin‑scroll) | |
Bore × stroke | 79.0 mm × 81.5 mm | |
Power output | 110 kW (150 PS) | |
Torque | 240 Nm @ 1,600–4,000 rpm | |
Fuel system | Bosch HDP6 high‑pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Garrett twin‑scroll (GT1544V) | |
Timing system | Chain (front‑mounted) | |
Oil type | Ford WSS‑M2C948‑B1 (SAE 0W‑20) | |
Dry weight | 106 kg |
The Ford RFN was used in Ford's Mk4 Puma and select Fiesta models with transverse mounting and no external licensing. This engine received platform-specific calibrations—revised cooling ducts in the Puma and modified exhaust routing in the Fiesta—and from Q4 2022 incorporated HPFP revisions per SSM 51872, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 RFN is generally robust when maintained properly. Early units (2020–2022) had HPFP concerns, but post-revision engines are more durable. Using correct 0W-20 oil, RON 95+ fuel, and avoiding constant high-load use greatly improves longevity. Most well-cared-for examples exceed 150,000 km without major issues.
Top issues include high-pressure fuel pump wear (pre-2022), GPF clogging from short trips, turbo wastegate rattle, and minor oil consumption. These are documented in Ford SSM 51872 and TIS diagnostics. Regular maintenance and proper driving habits mitigate most risks.
The RFN powers the Ford Puma (Mk4) from 2020–2024 and select Fiesta (Mk8) trims (ST-Line, Vignale) from 2021–2023. It was not used in any other Ford or partner-brand vehicles. All units are transverse-mounted and paired with a 6-speed manual or 7-speed dual-clutch automatic.
Aftermarket ECU tuning is common on the RFN platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In the Puma, real-world consumption is ~7.2 L/100km (city) and ~5.0 L/100km (highway), or about 40 mpg UK combined. Aggressive driving can push this to 9 L/100km. Highway cruising yields up to 47 mpg UK. GPF regeneration cycles may temporarily increase usage.
Yes. The RFN 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 reliable—no widespread failures reported in service data.
Ford specifies SAE 0W‑20 oil meeting WSS‑M2C948‑B1. This low-viscosity oil is critical for GPF protection and HPFP lubrication. Never use older Ford specs (e.g., 5W‑30). Change every 10,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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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
Type-approval guidance and documentation.
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