The Ford R6A is a 2,261 cc, inline‑four turbocharged petrol engine introduced in 2018 as part of Ford’s EcoBoost family. It features direct fuel injection, a single twin — scroll turbocharger, and dual overhead camshafts (DOHC). In standard tune it produces 202–224 kW (275–304 PS) with torque peaking at 450–475 Nm, delivering strong performance for sporty SUV applications.
Fitted to performance — oriented derivatives such as the Edge ST and Explorer ST, the R6A was engin…
All production years (2018–present) meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/8921).
The Ford R6A is a 2,261 cc inline‑four turbocharged petrol engineered for mid-size performance SUVs (2018–present). It combines direct injection with a twin‑scroll turbocharger to deliver immediate boost response and high torque across a broad rev range. Designed to meet Euro 6d from launch, it balances towing capability with stringent particulate and NOx compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,261 cc | |
Fuel type | Petrol (Unleaded, min. 95 RON) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 87.5 mm × 94.0 mm | |
Power output | 202–224 kW (275–304 PS) | |
Torque | 450–475 Nm @ 2,000–4,500 rpm | |
Fuel system | Bosch HDP6 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d (WLTP/RDE compliant) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled with dual electric pumps | |
Turbocharger | Single twin‑scroll (Honeywell/Garrett) | |
Timing system | Chain (front‑mounted, reinforced design) | |
Oil type | Ford WSS-M2C948-B1 (SAE 0W‑20) | |
Dry weight | 158 kg |
The Ford R6A was used across Ford's CD6 and U725 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts and oil pan baffling in the Edge ST for dynamic handling, and unique exhaust manifolding in the Explorer ST for underbody packaging—and from 2021 both models adopted revised HPFP hardware and updated ECU calibrations, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The R6A's primary reliability risk is high-pressure fuel pump (HPFP) degradation under sustained high-load conditions, with elevated incidence in hot climates or frequent towing. Ford internal data from 2022 indicated a measurable uptick in HPFP warranty claims for pre-2021 builds, while UK DVSA records show GPF-related limp-mode events are rare but linked to chronic urban-only use. Extended idling and poor fuel quality accelerate wear, making fuel specification and driving pattern critical.
Analysis derived from Ford technical bulletins (2018–2024) and UK DVSA failure statistics (2020–2024). Repair procedures should follow manufacturer guidelines.
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The R6A is generally robust when maintained properly and used with correct fuel. Early units (2018–2020) had HPFP concerns, largely resolved by 2021 updates. Regular use of 95+ RON petrol (98 RON for towing/high-load), adherence to oil specs, and occasional highway driving for GPF regeneration ensure longevity.
Main issues include high-pressure fuel pump wear (pre-2021), GPF clogging from short trips, turbo wastegate rattle, and coolant leaks from the thermostat housing. These are documented in Ford service bulletins TSB-22-1875 and TSB-22-1890.
The R6A powers the Edge ST (2018+) and Explorer ST (2019+), across 275–304 PS variants. All are Euro 6d-compliant and feature GPF from launch. No cross-manufacturer usage is documented.
Yes. Stage 1 ECU remaps typically yield +25–40 kW safely due to robust forged internals and conservative factory tuning. However, HPFP and turbo durability become limiting factors beyond 340 PS. Always use 98 RON fuel, upgraded intercooler, and monitor GPF delta pressure post-tune.
In an Edge ST 2.3 EcoBoost 304, expect ~11.2 L/100km (city), ~7.8 L/100km (highway), or ~25 mpg UK combined. Real-world mixed driving typically returns 23–28 mpg (UK), depending on load and driving style. GPF efficiency improves with consistent thermal cycles.
Yes. The R6A is an interference engine. Timing chain failure—though rare due to front-mounted reinforced design—could cause piston-to-valve contact. No widespread chain issues reported, but proper oil maintenance remains essential.
Ford specifies 0W-20 synthetic oil meeting WSS-M2C948-B1. This low-SAPS formulation protects the GPF and turbo bearings. Change intervals should not exceed 16,000 km or 12 months, whichever comes first.
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Regulation (EC) No 715/2007
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