The Stelato S9T 1.5T 37 kWh (309 Hp) Extended Range Hybrid, launched in September 2025, represents a significant entry into the burgeoning plug-in hybrid electric vehicle (PHEV) market. Positioned as a premium offering within the Stelato S9 lineup, this variant combines a relatively small 1.5-liter turbocharged gasoline engine with a substantial 37 kWh battery pack and a powerful electric motor, resulting in a vehicle designed for both efficient daily commuting and longer-distance travel. The S9T is a five-door, five-seat station wagon (estate) intended primarily for the Chinese market, adhering to China VI b emission standards, but with potential for expansion into other regions. Its unique powertrain architecture, featuring a generator-only internal combustion engine, sets it apart from many conventional hybrid systems.
Technical Specifications
| Brand | Stelato |
| Model | S9 |
| Generation | S9T |
| Type (Engine) | 1.5T 37 kWh (309 Hp) Extended Range Hybrid |
| Start of production | September, 2025 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (combined) | 0.56-6.15 l/100 km (420 – 38.2 US mpg, 504.4 – 45.9 UK mpg, 178.6 – 16.3 km/l) |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 7.32 sec |
| Acceleration 0 – 62 mph | 7.32 sec |
| Acceleration 0 – 60 mph | 7 sec |
| Maximum speed | 204 km/h (126.76 mph) |
| Emission standard | China VI b |
| Weight-to-power ratio | 7.6 kg/Hp, 131.3 Hp/tonne |
| Weight-to-torque ratio | 7.4 kg/Nm, 135.9 Nm/tonne |
| Gross battery capacity | 37 kWh |
| Battery voltage | 400 V |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| All-electric range (CLTC) | 201-251 km (124.9 – 155.96 mi) |
| Average Energy consumption (CLTC) | 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 | 2354 kg (5189.68 lbs.) |
| Max. weight | 2759 kg (6082.55 lbs.) |
| Max load | 405 kg (892.87 lbs.) |
| Trunk (boot) space – minimum | 729 l (25.74 cu. ft.) |
| Trunk (boot) space – maximum | 1677 l (59.22 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 | 1492 mm (58.74 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) | 0.23 |
| 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; 255/45 R20; 255/40 R21 |
| Wheel rims size | 20; 21 |
Powertrain & Engine Architecture
The Stelato S9T’s powertrain is a series hybrid system. The 1.5-liter turbocharged four-cylinder engine (code A156T2H) doesn’t directly power the wheels. Instead, it functions as a generator, producing electricity to either charge the 37 kWh lithium iron phosphate (LiFePO4) battery pack or to directly power the 309 Hp electric motor driving the rear wheels. This configuration allows for efficient operation across a wide range of driving conditions. The engine itself features direct fuel injection and a double overhead camshaft (DOHC) valvetrain, maximizing efficiency and power output. The electric motor, a synchronous type (model TZ210XYAP4), delivers substantial torque (320 Nm / 236 lb-ft) and contributes significantly to the vehicle’s overall performance. The single-speed automatic transmission is specifically designed for the electric motor, providing smooth and seamless acceleration.
Driving Characteristics
The S9T offers a refined driving experience, prioritizing comfort and efficiency. The rear-wheel-drive configuration, powered by the electric motor, provides responsive acceleration. The 7.32-second 0-62 mph (0-100 km/h) time is respectable for a vehicle of this size and weight. In electric-only mode, the S9T delivers near-silent operation and instant torque, making it ideal for urban driving. When the gasoline engine engages, it does so seamlessly, and the sound insulation minimizes noise intrusion into the cabin. The air suspension on both the front and rear axles contributes to a comfortable ride, even on uneven surfaces. Compared to potential higher-output versions of the S9, the 1.5T variant prioritizes fuel economy and a more relaxed driving experience over outright performance.
Equipment & Trim Levels
While specific trim levels and standard equipment may vary depending on the market, the S9T 1.5T generally includes features such as automatic climate control, a touchscreen infotainment system, and a suite of advanced driver-assistance systems (ADAS). Interior upholstery is likely to be a combination of leatherette and fabric in the base trim, with higher-grade leather options available. Optional extras could include a panoramic sunroof, premium audio system, and ventilated front seats. The station wagon body style provides ample cargo space, with 729 liters (25.74 cu. ft.) available with the rear seats up and 1677 liters (59.22 cu. ft.) with them folded down.
Chassis & Braking
The S9T utilizes a double wishbone suspension setup at the front and an independent multi-link suspension at the rear, both incorporating air suspension for adjustable ride height and improved comfort. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. An anti-lock braking system (ABS) is standard. The relatively heavy weight of the vehicle (2354 kg / 5189.68 lbs) necessitates a robust braking system and a well-tuned suspension to maintain stability and control.
Market Reception & Comparison
As a relatively new entrant to the market, the Stelato S9T’s reception is still developing. However, its combination of extended electric range, efficient gasoline engine, and spacious interior is expected to appeal to consumers seeking a practical and environmentally conscious vehicle. Compared to other PHEV station wagons, the S9T’s 37 kWh battery pack is competitive, offering a significant all-electric range. The unique series hybrid powertrain differentiates it from many rivals that employ parallel hybrid systems. Early reports suggest favorable fuel economy figures, aligning with the official WLTC ratings.
Legacy
The long-term reliability of the Stelato S9T’s powertrain remains to be seen, but the use of proven technologies such as lithium iron phosphate batteries and turbocharged gasoline engines suggests a reasonable expectation of durability. The LiFePO4 battery chemistry is known for its stability and long lifespan. In the used car market, the S9T is likely to be valued for its fuel efficiency, spaciousness, and advanced technology. Its unique powertrain architecture may also make it an attractive option for those seeking a different approach to hybrid vehicle technology.
