The Ford Fiesta Mk8, launched in 2017, represented a significant evolution for Ford’s long-running supermini. The 3-door variant, produced from 2017-2023, offered a more sporty and compact alternative to the 5-door model. Within the Mk8 range, the 1.0 EcoBoost 125 PS Mild Hybrid, introduced in May 2020 and continuing through 2021, occupied a middle-ground position, balancing fuel efficiency with a respectable level of performance. This version aimed to appeal to buyers seeking a modern, economical, and relatively engaging driving experience in a small package. It was part of Ford’s broader push towards electrification, incorporating mild-hybrid technology to reduce emissions and improve fuel economy.
Technical Specifications
| Brand | Ford |
| Model | Fiesta |
| Generation | Fiesta VIII (Mk8) 3 door |
| Type (Engine) | 1.0 EcoBoost (125 Hp) Mild Hybrid |
| Start of production | May, 2020 |
| End of production | 2021 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 3 |
| Fuel consumption at Low speed (WLTP) | 6.1 l/100 km (38.6 US mpg) |
| Fuel consumption at Medium speed (WLTP) | 4.7 l/100 km (50 US mpg) |
| Fuel consumption at high speed (WLTP) | 4.3 l/100 km (54.7 US mpg) |
| Fuel consumption at very high speed (WLTP) | 5.5 l/100 km (42.8 US mpg) |
| Combined fuel consumption (WLTP) | 5 l/100 km (47 US mpg) |
| CO2 emissions (WLTP) | 114 g/km |
| Fuel consumption (economy) – urban (NEDC) | 4.8-5.2 l/100 km (49 – 45.2 US mpg) |
| Fuel consumption (economy) – extra urban (NEDC) | 3.6-3.9 l/100 km (65.3 – 60.3 US mpg) |
| Fuel consumption (economy) – combined (NEDC) | 4-4.4 l/100 km (58.8 – 53.5 US mpg) |
| CO2 emissions (NEDC) | 92-99 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.4 sec |
| Acceleration 0 – 62 mph | 9.4 sec |
| Acceleration 0 – 60 mph | 8.9 sec |
| Maximum speed | 203 km/h (126.14 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 9.1 kg/Hp |
| Weight-to-torque ratio | 5.4 kg/Nm |
| Power | 125 Hp @ 6000 rpm |
| Torque | 210 Nm @ 1750 rpm (154.89 lb.-ft. @ 1750 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B7JB |
| Engine displacement | 999 cm3 (60.96 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.42 l (4.67 US qt | 3.89 UK qt) |
| Coolant | 5.8 l (6.13 US qt | 5.1 UK qt) |
| Kerb Weight | 1137 kg (2506.66 lbs.) |
| Max. weight | 1685 kg (3714.79 lbs.) |
| Max load | 548 kg (1208.13 lbs.) |
| Trunk (boot) space – minimum | 292 l (10.31 cu. ft.) |
| Trunk (boot) space – maximum | 1093 l (38.6 cu. ft.) |
| Fuel tank capacity | 42 l (11.1 US gal | 9.24 UK gal) |
| Permitted trailer load with brakes (8%) | 1000 kg (2204.62 lbs.) |
| Permitted trailer load with brakes (12%) | 1000 kg (2204.62 lbs.) |
| Permitted trailer load without brakes | 605 kg (1333.8 lbs.) |
| Permitted towbar download | 45 kg (99.21 lbs.) |
| Length | 4040 mm (159.06 in.) |
| Width | 1735 mm (68.31 in.) |
| Width including mirrors | 1941 mm (76.42 in.) |
| Height | 1476 mm (58.11 in.) |
| Wheelbase | 2493 mm (98.15 in.) |
| Front overhang | 839 mm (33.03 in.) |
| Rear overhang | 708 mm (27.87 in.) |
| Ride height (ground clearance) | 133 mm (5.24 in.) |
| Minimum turning circle | 9.8 m (32.15 ft.) |
| Drivetrain Architecture | ICE and electric motor, Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 195/60 R 15 |
| Wheel rims size | 6 J x 15 |
Powertrain & Engine Architecture
The heart of this Fiesta variant is the 1.0 EcoBoost B7JB engine, a three-cylinder turbocharged gasoline engine. This engine is part of Ford’s EcoBoost family, known for its combination of small displacement, turbocharging, and direct fuel injection. The 125 PS version utilizes a single-scroll turbocharger and direct injection operating at pressures up to 200 bar. The mild-hybrid system consists of a 48-volt belt-driven integrated starter generator (BiSG). This system allows for extended auto start-stop functionality, regenerative braking to recoup energy during deceleration, and a small boost in power during acceleration. The engine’s valvetrain employs a double overhead camshaft (DOHC) configuration with four valves per cylinder. The transmission is a 6-speed manual gearbox, chosen for its efficiency and driver engagement. The engine oil capacity is 4.42 liters, and it requires a specification meeting Ford’s standards.
Driving Characteristics
The 1.0 EcoBoost 125 PS with the 6-speed manual transmission offers a surprisingly lively driving experience for a supermini. While not as overtly powerful as some of its rivals, the turbocharger provides a noticeable boost in torque from around 1750 rpm, making it feel responsive in everyday driving situations. The 0-60 mph time of around 8.9 seconds is respectable. The gear ratios are well-chosen, providing adequate acceleration in each gear. Compared to the lower-powered 1.0 EcoBoost variants, the 125 PS version feels significantly more capable, particularly when carrying passengers or luggage. However, it doesn’t match the outright performance of the Fiesta ST. The mild-hybrid system is largely transparent to the driver, providing a subtle assistance during acceleration and contributing to improved fuel economy.
Equipment & Trim Levels
The 1.0 EcoBoost 125 PS Mild Hybrid was typically offered in mid-range trim levels, such as Titanium or ST-Line. Standard equipment generally included air conditioning, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, alloy wheels, and a suite of safety features including lane-keeping assist and automatic emergency braking. Optional extras could include a panoramic sunroof, heated seats, and upgraded audio systems. Interior upholstery was typically cloth, with higher trims offering partial leather options. The dashboard layout was modern and functional, with a focus on ease of use.
Chassis & Braking
The Fiesta Mk8 utilizes a McPherson strut front suspension and an independent multi-link rear suspension. This setup provides a good balance between ride comfort and handling. The 1.0 EcoBoost models typically featured a smaller rear disc brake setup compared to higher-performance variants. Anti-lock brakes (ABS) and electronic stability control (ESC) were standard safety features. The steering is electrically assisted, providing a light and precise feel. The 3-door model, being slightly lighter than the 5-door, offered a marginally more agile driving experience.
Market Reception & Comparison
The 1.0 EcoBoost 125 PS Mild Hybrid Fiesta was generally well-received by automotive critics. It was praised for its fuel efficiency, responsive engine, and enjoyable driving dynamics. Compared to the lower-powered 1.0 EcoBoost variants, it offered a significant improvement in performance without sacrificing economy. Against competitors like the Volkswagen Polo and Opel Corsa, the Fiesta was often seen as the more engaging and fun-to-drive option. However, some critics noted that the interior materials weren’t as premium as those found in some rivals.
Legacy
The 1.0 EcoBoost engine has proven to be a reliable and durable powertrain, although early versions did experience some issues with timing belt failures. The mild-hybrid system has also generally proven to be reliable. On the used car market, the 1.0 EcoBoost 125 PS Fiesta Mk8 represents a good value proposition, offering a blend of economy, performance, and practicality. Regular maintenance, including oil changes and timing belt replacements (where applicable), is crucial to ensure long-term reliability. The Fiesta Mk8, in general, remains a popular choice for buyers seeking a well-rounded and affordable supermini.
