The Ford Focus IV Hatchback ST 2.3 EcoBoost, produced from June 2019 to 2021, represents the performance-oriented variant of the fourth-generation Focus. Positioned as the flagship model within the Focus range, the ST aimed to deliver a compelling blend of everyday practicality and engaging driving dynamics. It was primarily marketed in Europe and other global markets, offering a more accessible entry point into the hot hatch segment compared to rivals like the Volkswagen Golf GTI or the Renault Mégane R.S. This model year marked a significant shift for the Focus ST, moving away from the five-cylinder engine of previous generations to a turbocharged four-cylinder EcoBoost powerplant.
Technical Specifications
| Brand | Ford |
| Model | Focus |
| Generation | Focus IV Hatchback |
| Type (Engine) | ST 2.3 EcoBoost (280 Hp) |
| Start of production | June, 2019 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 10.8 l/100 km (21.8 US mpg) |
| Fuel consumption (extra urban) | 6.2 l/100 km (37.9 US mpg) |
| Fuel consumption (combined) | 7.9 l/100 km (29.8 US mpg) |
| CO2 emissions | 179 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.7 sec |
| Acceleration 0 – 62 mph | 5.7 sec |
| Acceleration 0 – 60 mph | 5.4 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 5.1 kg/Hp |
| Weight-to-torque ratio | 3.4 kg/Nm |
| Power | 280 Hp @ 5500 rpm |
| Torque | 420 Nm @ 3000-4000 rpm (309.78 lb.-ft. @ 3000-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | N3DA |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.3 l (5.6 US qt | 4.66 UK qt) |
| Coolant capacity | 7.2 l (7.61 US qt | 6.34 UK qt) |
| Kerb Weight | 1433 kg (3159.22 lbs.) |
| Max. weight | 2000 kg (4409.25 lbs.) |
| Max load | 567 kg (1250.02 lbs.) |
| Trunk (boot) space – minimum | 273 l (9.64 cu. ft.) |
| Trunk (boot) space – maximum | 1250 l (44.14 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Permitted trailer load with brakes (12%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 90 kg (198.42 lbs.) |
| Length | 4388 mm (172.76 in.) |
| Width | 1825 mm (71.85 in.) |
| Width with mirrors folded | 1848 mm (72.76 in.) |
| Width including mirrors | 1979 mm (77.91 in.) |
| Height | 1458 mm (57.4 in.) |
| Wheelbase | 2700 mm (106.3 in.) |
| Minimum turning circle | 10.7 m (35.1 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 6 gears, manual transmission |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 235/40 R18 |
| Wheel rims size | 8J x 18 |
INTRODUCTION
The Ford Focus IV Hatchback ST 2.3 EcoBoost, launched in 2019, marked a new chapter for the iconic hot hatch. Building upon the solid foundation of the fourth-generation Focus, the ST variant aimed to deliver a more engaging and dynamic driving experience. It replaced the previous model’s 2.5-liter five-cylinder engine with a more modern and efficient 2.3-liter EcoBoost four-cylinder, a powerplant already proven in the Ford Mustang and Focus RS. The ST occupied the top performance tier of the Focus IV range, sitting above the standard models and offering a significant upgrade in terms of power, handling, and styling.
Powertrain & Engine Architecture
At the heart of the Focus ST lies the N3DA 2.3-liter EcoBoost inline-four engine. This engine utilizes direct fuel injection and a single twin-scroll turbocharger with an integrated intercooler to deliver 280 horsepower at 5500 rpm and 310 lb-ft of torque between 3000 and 4000 rpm. The engine benefits from a low-inertia turbocharger, designed to minimize turbo lag and provide responsive power delivery. The engine block is constructed from aluminum, contributing to weight reduction. The 6-speed manual transmission was standard, providing precise gear changes and enhancing driver engagement. The transmission featured revised gear ratios optimized for performance.
Driving Characteristics
The Focus ST 2.3 EcoBoost offered a noticeably more spirited driving experience compared to lower-spec Focus models. The 280 hp output, combined with the responsive turbocharger, provided strong acceleration, with a 0-60 mph time of around 5.4 seconds. The manual transmission allowed for precise control, while the well-tuned suspension and steering provided excellent handling and body control. Compared to the earlier Focus ST models with the five-cylinder engine, the 2.3 EcoBoost felt more refined and offered a broader powerband. While the older model had a more characterful exhaust note, the 2.3 EcoBoost provided a more modern and efficient driving experience. The ST’s electronic limited-slip differential (eLSD) further enhanced cornering ability by distributing torque between the front wheels, minimizing understeer and maximizing traction.
Equipment & Trim Levels
The Focus ST came well-equipped as standard, featuring sport seats upholstered in Recaro fabric, a flat-bottomed steering wheel, and unique ST badging throughout the interior and exterior. Standard features also included Ford’s SYNC 3 infotainment system with an 8-inch touchscreen, Apple CarPlay and Android Auto compatibility, and a B&O premium sound system. Optional extras included a sunroof, heated front seats, and various driver-assistance technologies such as adaptive cruise control and lane-keeping assist. The interior design featured a dark and sporty aesthetic, with contrasting stitching and aluminum pedals.
Chassis & Braking
The Focus ST benefited from a revised chassis and suspension setup compared to the standard Focus. It featured stiffer springs and dampers, along with a thicker rear anti-roll bar, to reduce body roll and improve handling. The front suspension utilized independent MacPherson struts, while the rear featured a multi-link setup. Braking duties were handled by larger front brake discs with upgraded calipers, providing ample stopping power. The ST also featured a sport-tuned electric power steering system, offering precise and responsive steering feel.
Market Reception & Comparison
The Focus ST 2.3 EcoBoost was generally well-received by automotive critics, who praised its engaging driving dynamics, powerful engine, and well-equipped interior. It was often compared favorably to rivals such as the Volkswagen Golf GTI and the Hyundai i30 N. While the Golf GTI offered a more refined and comfortable ride, the Focus ST provided a more raw and engaging driving experience. Fuel economy was respectable for a hot hatch, averaging around 29.8 US mpg in combined driving. Reliability reports were generally positive, although some owners reported minor issues with the infotainment system.
Legacy
The Ford Focus IV ST 2.3 EcoBoost represents a significant evolution of the Focus ST lineage. The switch to the EcoBoost engine provided a compelling blend of performance and efficiency, while the well-tuned chassis and suspension delivered an engaging driving experience. On the used car market, these models hold their value reasonably well, particularly those with low mileage and a full service history. The 2.3 EcoBoost engine has proven to be relatively reliable, although regular maintenance is essential to ensure long-term durability. The Focus ST 2.3 EcoBoost remains a popular choice for enthusiasts seeking a fun-to-drive and practical hot hatch.
