The Stelato S9 1.5T 37 kWh (309 Hp) Extended Range Hybrid is a plug-in hybrid electric vehicle (PHEV) sedan introduced in April 2025. Positioned as a technologically advanced offering within the Stelato lineup, the S9 aims to combine the benefits of electric driving with the extended range provided by a gasoline engine. It represents Stelato’s entry into the competitive mid-size sedan segment, focusing on efficiency, performance, and a sophisticated driving experience. The S9 is built on a dedicated EV platform, showcasing the brand’s commitment to new energy vehicles.
Technical Specifications
| Brand | Stelato |
| Model | S9 |
| Generation | S9 |
| Type (Engine) | 1.5T 37 kWh (309 Hp) Extended Range Hybrid |
| Start of production | April, 2025 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – combined (WLTC) | 0.51-5.93 l/100 km (461.2 – 39.7 US mpg, 553.9 – 47.6 UK mpg, 196.1 – 16.9 km/l) |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 7.2 sec |
| Acceleration 0 – 62 mph | 7.2 sec |
| Acceleration 0 – 60 mph | 6.8 sec |
| Maximum speed | 204 km/h (126.76 mph) |
| Emission standard | China VI b |
| Weight-to-power ratio | 7.5 kg/Hp, 132.6 Hp/tonne |
| Weight-to-torque ratio | 7.3 kg/Nm, 137.3 Nm/tonne |
| Gross battery capacity | 37 kWh |
| Battery voltage | 400 V |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| All-electric range (WLTC) | 204 km (126.76 mi) |
| Average Energy consumption (WLTC) | 17.9 kWh/100 km (28.81 kWh/100 mi, 117 MPGe, 5.6 km/kWh, 3.5 mi/kWh) |
| Electric motor power | 309 Hp |
| Electric motor Torque | 320 Nm (236.02 lb.-ft.) |
| Electric motor model/code | TZ210XYAP4 |
| Electric motor location | Rear axle, Transverse |
| Electric motor type | Synchronous |
| System power | 309 Hp |
| System torque | 320 Nm (236.02 lb.-ft.) |
| Power | 160 Hp |
| Power per litre | 106.8 Hp/l |
| Engine layout | Front, Transverse |
| Engine Model/Code | A156T2H |
| Engine displacement | 1498 cm3 (91.41 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 2330 kg (5136.77 lbs.) |
| Max. weight | 2735 kg (6029.64 lbs.) |
| Max load | 405 kg (892.87 lbs.) |
| Trunk (boot) space – minimum | 375 l (13.24 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 5160 mm (203.15 in.) |
| Width | 2005 mm (78.94 in.) |
| Height | 1486 mm (58.5 in.) |
| Wheelbase | 3050 mm (120.08 in.) |
| Front track | 1706 mm (67.17 in.) |
| Rear (Back) track | 1738 mm (68.43 in.) |
| Drag coefficient (Cd) | 0.193 |
| Approach angle | 13° |
| Departure angle | 15° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the generator only, with no mechanical connection to the drive. An electric motor drives the rear wheels. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 1 gears, automatic transmission |
| Front suspension | Double wishbone, Transverse stabilizer, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/45 R20; 255/40 R21 |
| Wheel rims size | 20; 21 |
Powertrain & Engine Architecture
The Stelato S9 utilizes a sophisticated plug-in hybrid powertrain. The core of the system is a 1.5-liter turbocharged inline-four cylinder gasoline engine (code A156T2H) producing 160 horsepower. This engine is paired with a 37 kWh lithium iron phosphate (LiFePO4) battery pack and a 309 horsepower electric motor (TZ210XYAP4). Crucially, the gasoline engine does *not* directly drive the wheels. Instead, it functions as a generator, charging the battery and providing power to the electric motor. The electric motor, mounted on the rear axle, is responsible for all-wheel drive. The engine employs direct fuel injection and a double overhead camshaft (DOHC) valvetrain for optimized combustion efficiency. The single-speed automatic transmission is specifically designed for the electric motor, prioritizing smooth and efficient power delivery.
Driving Characteristics
The S9’s driving experience is heavily influenced by its electric powertrain. In typical driving scenarios, the vehicle operates solely on electric power, offering near-silent operation and instant torque. The 204 km (126.76 miles) of all-electric range allows for daily commutes and shorter trips without utilizing the gasoline engine. When additional power or range is needed, the gasoline engine kicks in to act as a generator. The transition between electric and hybrid modes is generally seamless. Acceleration from 0-60 mph is achieved in approximately 6.8 seconds. While not a performance-focused vehicle, the combined output of 309 horsepower provides adequate power for highway merging and overtaking. The rear-wheel drive configuration contributes to a balanced feel, although the added weight of the battery pack is noticeable in cornering compared to lighter sedans.
Equipment & Trim Levels
The Stelato S9 1.5T 37 kWh comes standard with a comprehensive suite of features. Interior appointments include premium synthetic leather upholstery, a large touchscreen infotainment system with integrated navigation, and a digital instrument cluster. Standard safety features include ABS, electronic stability control, and a suite of driver-assistance systems. Optional extras include a panoramic sunroof, upgraded audio system, and advanced driver-assistance features such as adaptive cruise control and lane-keeping assist. Trim levels beyond the base model are expected to offer additional cosmetic enhancements and convenience features.
Chassis & Braking
The S9 features a double wishbone suspension setup at the front and an independent multi-link suspension at the rear, both incorporating air suspension for a comfortable ride. Air suspension allows for adjustable ride height and improved damping characteristics. Ventilated disc brakes are used on all four wheels, providing ample stopping power. The electric steering system offers precise and responsive handling. The vehicle’s relatively high curb weight of 2330 kg (5136.77 lbs) necessitates a robust suspension and braking system to maintain control and stability.
Market Reception & Comparison
Initial reviews of the Stelato S9 have been positive, with critics praising its fuel efficiency, smooth ride, and advanced technology. The all-electric range of 204 km (126.76 miles) is competitive within the PHEV segment. Compared to other PHEV sedans, the S9’s unique powertrain architecture – with the gasoline engine solely acting as a generator – sets it apart. Some reviewers have noted the vehicle’s relatively high price point compared to similarly equipped competitors. Fuel economy figures of 0.51-5.93 l/100 km (461.2 – 39.7 US mpg) are impressive, particularly when factoring in the vehicle’s size and weight.
Legacy
The long-term reliability of the Stelato S9’s powertrain remains to be seen, as it is a relatively new model. However, the use of proven technologies such as lithium iron phosphate batteries and turbocharged engines suggests a reasonable expectation of durability. The LiFePO4 battery chemistry is known for its stability and long lifespan. As the used car market matures, the S9 is expected to appeal to buyers seeking a fuel-efficient and technologically advanced sedan with a plug-in hybrid powertrain. Its unique powertrain design and focus on electric driving may position it as a desirable option for environmentally conscious consumers.
