Technical Specifications
| Brand | Kia |
| Model | K4 |
| Generation | K4 Hatch (2025) |
| Type (Engine) | 1.0 T-GDI (115 Hp) Mild Hybrid |
| Start of production | October, 2025 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption at Medium speed (WLTP) | 5.7 l/100 km (41.3 US mpg, 49.6 UK mpg, 17.5 km/l) |
| Fuel consumption at high speed (WLTP) | 4.8 l/100 km (49 US mpg, 58.9 UK mpg, 20.8 km/l) |
| Fuel consumption at very high speed (WLTP) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Combined fuel consumption (WLTP) | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 12.2 sec |
| Acceleration 0 – 62 mph | 12.2 sec |
| Acceleration 0 – 60 mph | 11.6 sec |
| Maximum speed | 185 km/h (114.95 mph) |
| Emission standard | Euro 6e-bis |
| Battery voltage | 48 V |
| Power | 115 Hp @ 6000 rpm |
| Torque | 200 Nm @ 2000-3000 rpm (147.51 lb.-ft. @ 2000-3000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | G3LJ |
| Engine displacement | 998 cm3 (60.9 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine systems | Start & Stop System, Particulate filter |
| Trunk (boot) space – minimum | 328 l (11.58 cu. ft.) |
| Trunk (boot) space – maximum | 1107 l (39.09 cu. ft.) |
| Fuel tank capacity | 47 l (12.42 US gal, 10.34 UK gal) |
| Length | 4440 mm (174.8 in.) |
| Width | 1850 mm (72.83 in.) |
| Height | 1435 mm (56.5 in.) |
| Wheelbase | 2720 mm (107.09 in.) |
| Front overhang | 905 mm (35.63 in.) |
| Rear overhang | 815 mm (32.09 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Minimum turning circle | 10.8 m (35.43 ft.) |
| Drivetrain Architecture | Front wheel drive, MHEV. ICE and electric motor drive front wheels in mixed mode. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 205/55 R16 |
| Wheel rims size | 16 |
The Kia K4 Hatch 1.0 T-GDI Mild Hybrid, introduced in October 2025, is a five-door hatchback designed to appeal to buyers seeking a fuel-efficient and practical vehicle. It’s built on Kia’s modern platform, sharing components with other models in the Kia lineup. This variant serves as the entry point to the K4 Hatch range, offering a balance between affordability and features. The K4 Hatch aims to compete with established players in the European compact hatchback market, such as the Volkswagen Golf, Ford Focus, and Peugeot 308.
Powertrain & Engine Architecture
At the heart of the K4 Hatch 1.0 T-GDI Mild Hybrid is the G3LJ engine, a 998cc, three-cylinder turbocharged gasoline engine. This engine utilizes direct fuel injection and an intercooler to optimize performance and efficiency. The ‘T-GDI’ designation stands for Turbocharged Gasoline Direct Injection. The mild hybrid system incorporates a 48V electric motor and battery pack, providing assistance during acceleration and enabling start-stop functionality. This system isn’t designed for full electric driving but rather to reduce fuel consumption and emissions. The engine produces 115 horsepower at 6000 rpm and 200 Nm (147.51 lb.-ft.) of torque between 2000 and 3000 rpm. The engine is paired with a 6-speed manual transmission, prioritizing driver engagement and fuel economy. The engine also features a particulate filter to reduce emissions, meeting stringent Euro 6e-bis standards.
Driving Characteristics
The 1.0 T-GDI engine, while not exceptionally powerful, provides adequate performance for everyday driving. Acceleration from 0 to 100 km/h (0-62 mph) takes approximately 12.2 seconds. The turbocharger helps to deliver a usable amount of torque at lower engine speeds, making it suitable for urban driving and overtaking maneuvers. Compared to higher-output versions of the K4 Hatch (if available), this variant offers a more relaxed driving experience, prioritizing fuel efficiency over outright speed. The 6-speed manual transmission allows for precise gear selection, enhancing driver control. The mild hybrid system provides a subtle boost during acceleration, improving responsiveness. The gear ratios are tuned for fuel economy, meaning the engine may need to be revved slightly higher for quicker acceleration.
Equipment & Trim Levels
The base-level K4 Hatch 1.0 T-GDI Mild Hybrid typically comes equipped with a range of standard features, including air conditioning, a touchscreen infotainment system with smartphone integration (Apple CarPlay and Android Auto), Bluetooth connectivity, and a suite of safety features such as ABS, electronic stability control, and multiple airbags. Interior upholstery is typically cloth, with a functional and durable design. Optional extras may include alloy wheels, a larger touchscreen display, a rearview camera, parking sensors, and advanced driver-assistance systems (ADAS) like lane departure warning and automatic emergency braking. Trim levels above the base model would add features like upgraded interior materials, heated seats, and a premium audio system.
Chassis & Braking
The K4 Hatch utilizes an independent McPherson strut suspension at the front and an independent multi-link suspension at the rear, providing a comfortable ride and good handling characteristics. The suspension is tuned to balance ride comfort with body control. The braking system consists of ventilated discs at the front and solid discs at the rear, providing adequate stopping power. ABS (Anti-lock Braking System) is standard, enhancing safety during emergency braking situations. The steering is electrically assisted, offering light and precise steering feel. The vehicle’s relatively low weight, thanks to the small engine and mild hybrid system, contributes to its agility and responsiveness.
Market Reception & Comparison
The Kia K4 Hatch 1.0 T-GDI Mild Hybrid is expected to be well-received by buyers seeking a fuel-efficient and affordable compact hatchback. Critics have praised Kia’s commitment to value for money and the K4 Hatch’s modern design. Compared to other trims in the K4 Hatch lineup, the 1.0 T-GDI Mild Hybrid offers the best fuel economy but the lowest performance. It competes directly with similar offerings from other manufacturers, such as the Volkswagen Golf 1.0 TSI and the Ford Focus EcoBoost. The K4 Hatch’s mild hybrid system provides a slight advantage in terms of fuel efficiency and emissions compared to non-hybrid competitors.
Legacy
The long-term reliability of the G3LJ engine and the mild hybrid system remains to be seen, but Kia has a generally good reputation for build quality and reliability. The 1.0 T-GDI engine has been used in other Kia and Hyundai models, and early reports suggest it is a durable and dependable unit. As the K4 Hatch ages, its value in the used car market will likely depend on its condition, mileage, and maintenance history. The combination of fuel efficiency, practicality, and affordability should ensure that the K4 Hatch 1.0 T-GDI Mild Hybrid remains a popular choice for budget-conscious buyers for years to come.
