The Kia Stonic, specifically the facelifted version introduced in 2020, represents Kia’s entry into the highly competitive subcompact crossover segment. The 1.0 T-GDI (100 hp) Mild Hybrid variant, launched in May 2024 and continuing through September 2025, was positioned as an efficient and affordable option within the Stonic lineup. This model aimed to balance fuel economy with reasonable performance, appealing to buyers seeking a practical and economical urban vehicle. It falls within the Kia Stonic’s first generation, built on the platform shared with the Hyundai Kona.
Technical Specifications
| Brand | Kia |
| Model | Stonic |
| Generation | Stonic (facelift 2020) |
| Type (Engine) | 1.0 T-GDI (100 Hp) Mild Hybrid |
| Start of production | May, 2024 |
| End of production | September, 2025 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Crossover |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Fuel consumption at Medium speed (WLTP) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 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) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Combined fuel consumption (WLTP) | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| CO2 emissions (WLTP) | 128 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11.3 sec |
| Acceleration 0 – 62 mph | 11.3 sec |
| Acceleration 0 – 60 mph | 10.7 sec |
| Maximum speed | 179 km/h (111.23 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 11.5 kg/Hp |
| Weight-to-torque ratio | 6.7 kg/Nm |
| Battery voltage | 48 V |
| Power | 100 Hp @ 6000 rpm |
| Torque | 172 Nm @ 1500-3500 rpm (126.86 lb.-ft. @ 1500-3500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | G3LF |
| Engine displacement | 998 cm3 (60.9 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Cylinder Bore | 71 mm (2.8 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | CVVD |
| Engine oil capacity | 3.6 l (3.8 US qt, 3.17 UK qt) |
| Coolant | 5.9 l (6.23 US qt, 5.19 UK qt) |
| Kerb Weight | 1150-1253 kg (2535.32 – 2762.39 lbs.) |
| Max. weight | 1680 kg (3703.77 lbs.) |
| Max load | 427-530 kg (941.37 – 1168.45 lbs.) |
| Trunk (boot) space – minimum | 352 l (12.43 cu. ft.) |
| Trunk (boot) space – maximum | 1155 l (40.79 cu. ft.) |
| Fuel tank capacity | 45 l (11.89 US gal, 9.9 UK gal) |
| Max. roof load | 70 kg (154.32 lbs.) |
| Permitted trailer load with brakes (12%) | 710 kg (1565.28 lbs.) |
| Permitted trailer load without brakes | 450 kg (992.08 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4140 mm (162.99 in.) |
| Width | 1760 mm (69.29 in.) |
| Width including mirrors | 2025 mm (79.72 in.) |
| Height | 1520 mm (59.84 in.) |
| Wheelbase | 2580 mm (101.57 in.) |
| Front track | 1531-1573 mm (60.28 – 61.93 in.) |
| Rear (Back) track | 1539-1544 mm (60.59 – 60.79 in.) |
| Front overhang | 830 mm (32.68 in.) |
| Rear overhang | 730 mm (28.74 in.) |
| Minimum turning circle | 10.4 m (34.12 ft.) |
| Drivetrain Architecture | ICE and electric motor drive front wheels |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Coil spring, Elastic beam |
| Front brakes | Ventilated discs, 280 mm |
| Rear brakes | Disc, 262 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 185/65 R15 88H; 195/55 R16 87H; 205/55 R17 91V |
| Wheel rims size | 6.0J x 15 ET46; 6.0J x 16 ET49; 6.5J x 17 ET49 |
INTRODUCTION
The Kia Stonic facelift, released in 2020, brought updated styling and technology to Kia’s subcompact crossover. The 1.0 T-GDI (100 hp) Mild Hybrid variant, introduced in 2024, was a key offering in many European markets, where fuel efficiency and lower emissions are highly valued. This version utilized a 48-volt mild hybrid system to supplement the gasoline engine, providing a small boost in power and improved fuel economy. It was positioned as an entry-level to mid-range trim, offering a balance between affordability and features. The Stonic competes with vehicles like the Hyundai Kona, Nissan Juke, and Renault Captur.
Powertrain & Engine Architecture
At the heart of this Stonic variant lies Kia’s G3LF 1.0-liter turbocharged three-cylinder engine. This engine, part of Kia’s “Smartstream” family, is characterized by its compact size and efficient design. The engine utilizes direct fuel injection and a single scroll turbocharger to deliver 100 horsepower at 6000 rpm and 172 Nm (126.86 lb.-ft.) of torque between 1500 and 3500 rpm. The engine also features Kia’s Continuously Variable Valve Duration (CVVD) technology, which optimizes valve timing based on driving conditions to improve efficiency and reduce emissions. The mild hybrid system consists of a 48V battery and a belt-driven starter generator (BSG). The BSG assists the engine during acceleration, recovers energy during braking, and enables a start-stop system for reduced idling emissions. The engine is paired with a 6-speed manual transmission, sending power to the front wheels.
Driving Characteristics
The 1.0 T-GDI 100 hp Stonic offers adequate performance for urban driving and shorter highway trips. Acceleration from 0 to 60 mph takes approximately 10.7 seconds, and the top speed is around 111.23 mph. While not particularly sporty, the engine provides sufficient torque for everyday driving situations. The mild hybrid system provides a subtle boost during acceleration, making the car feel more responsive. The 6-speed manual transmission is well-matched to the engine, offering smooth gear changes. Compared to higher-output versions of the Stonic, this variant prioritizes fuel economy over outright performance. The manual transmission provides more driver engagement than an automatic, but also requires more effort in stop-and-go traffic.
Equipment & Trim Levels
The 1.0 T-GDI Mild Hybrid Stonic typically came equipped with a range of standard features, including air conditioning, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, Bluetooth connectivity, and a suite of safety features such as lane departure warning, forward collision avoidance assist, and automatic emergency braking. Higher trim levels offered additional features like a larger touchscreen display, a rearview camera, parking sensors, and alloy wheels. Interior upholstery was typically cloth, with options for upgraded materials on higher trims. Available options included a sunroof, heated seats, and a premium audio system.
Chassis & Braking
The Stonic utilizes a front-wheel-drive platform with a McPherson strut front suspension and a torsion beam rear suspension. This setup provides a comfortable ride quality, suitable for everyday driving. The front brakes are ventilated discs, while the rear brakes are solid discs. ABS (Anti-lock Braking System) is standard. The suspension is tuned for comfort rather than sporty handling, prioritizing ride quality over sharp cornering. Stabilizer bars are included on both axles to reduce body roll.
Market Reception & Comparison
The Kia Stonic 1.0 T-GDI Mild Hybrid was generally well-received by automotive critics for its fuel efficiency and affordability. It offered a competitive fuel economy figure of around 42 US mpg combined. Compared to other trims in the Stonic lineup, this variant provided a more economical option for buyers who prioritized fuel savings over performance. The mild hybrid system helped to reduce emissions, making it an attractive choice in markets with strict environmental regulations. Some reviewers noted that the engine could feel strained when fully loaded or driving uphill, but overall, it was considered a capable and practical choice for urban driving.
Legacy
The Kia Stonic 1.0 T-GDI Mild Hybrid powertrain has proven to be relatively reliable in the used car market. The G3LF engine is known for its durability, and the mild hybrid system has not been associated with widespread issues. However, as with any turbocharged engine, regular maintenance, including oil changes and inspections of the turbocharger and intercooler, is crucial. The Stonic’s affordability and fuel efficiency continue to make it a popular choice among budget-conscious buyers seeking a practical and economical subcompact crossover.
