The M-Hero M817 1.5T 31.7 kWh is a plug-in hybrid electric vehicle (PHEV) introduced in August 2025 by the Chinese automaker M-Hero. Positioned as a premium off-road SUV, the M817 represents M-Hero’s entry into the rapidly expanding market for high-performance, environmentally conscious vehicles. This particular variant, combining a 1.5-liter turbocharged gasoline engine with a substantial 31.7 kWh battery pack and dual electric motors, delivers a combined system output of 687 horsepower and all-wheel drive capability. It is designed to appeal to buyers seeking both robust off-road performance and the benefits of electric driving, including reduced emissions and fuel consumption.
Technical Specifications
| Brand | M-Hero |
| Model | M817 |
| Generation | M817 |
| Type (Engine) | 1.5T 31.7 kWh (687 Hp) Plug-in Hybrid 4WD DHT |
| Start of production | August, 2025 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Off-road vehicle, SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – combined (WLTC) | 0.7-7.24 l/100 km (336 – 32.5 US mpg, 403.5 – 39 UK mpg, 142.9 – 13.8 km/l) |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 5.2 sec |
| Acceleration 0 – 62 mph | 5.2 sec |
| Acceleration 0 – 60 mph | 4.9 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Emission standard | China VI B |
| Weight-to-power ratio | 4.2 kg/Hp, 236.2 Hp/tonne |
| Weight-to-torque ratio | 3.4 kg/Nm, 291.5 Nm/tonne |
| Gross battery capacity | 31.7 kWh |
| Battery voltage | 364.8 V |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| Battery location | Below the floor |
| All-electric range | 110-140 km (68.35 – 86.99 mi) |
| Average Energy consumption | 24.8 kWh/100 km (39.91 kWh/100 mi, 84 MPGe, 4 km/kWh, 2.5 mi/kWh) |
| Electric motor 1 power | 272 Hp |
| Electric motor 1 Torque | 350 Nm (258.15 lb.-ft.) |
| Electric motor 1 model/code | TZ220XY05M |
| Electric motor 1 location | Integrated into the transmission |
| Electric motor 1 type | Synchronous |
| Electric motor 2 power | 279 Hp |
| Electric motor 2 Torque | 410 Nm (302.4 lb.-ft.) |
| Electric motor 2 model/code | TZ225XYH06 |
| Electric motor 2 location | Rear axle, Transverse |
| Electric motor 2 type | Synchronous |
| System power | 687 Hp |
| System torque | 848 Nm (625.45 lb.-ft.) |
| Power | 197 Hp |
| Power per litre | 131.6 Hp/l |
| Torque | 290 Nm (213.89 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DFMC15TE6 |
| Engine displacement | 1497 cm3 (91.35 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 | 2909 kg (6413.25 lbs.) |
| Max. weight | 3395 kg (7484.69 lbs.) |
| Max load | 486 kg (1071.45 lbs.) |
| Trunk (boot) space – minimum | 828 l (29.24 cu. ft.) |
| Trunk (boot) space – maximum | 2112 l (74.58 cu. ft.) |
| Fuel tank capacity | 84 l (22.19 US gal | 18.48 UK gal) |
| Permitted trailer load with brakes (12%) | 2500 kg (5511.56 lbs.) |
| Length | 5100 mm (200.79 in.) |
| Width | 1998 mm (78.66 in.) |
| Height | 1899-1919 mm (74.76 – 75.55 in.) |
| Wheelbase | 3005 mm (118.31 in.) |
| Front track | 1720 mm (67.72 in.) |
| Rear (Back) track | 1717 mm (67.6 in.) |
| Ride height (ground clearance) | 228-333 mm (8.98 – 13.11 in.) |
| Minimum turning circle (turning diameter) | 10.4 m (34.12 ft.) |
| Approach angle | 30-37.7° |
| Departure angle | 30-37° |
| Ramp-over (brakeover) angle | 19-27.3° |
| Climb angle | 45° |
| Wading depth | 820-900 mm (32.28 – 35.43 in.) |
| Drivetrain Architecture | An Internal combustion engine (ICE) drives the front wheels, one electric motor drives the front wheels, one electric motor drives the rear wheels. There is an ability for running in full electric or mixed mode. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 2 gears, automatic transmission DHT |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Double wishbone, Transverse stabilizer, Coil spring, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system), 4-wheel steering (4WS, active rear steering) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 275/60 R20 |
| Wheel rims size | 20 |
Powertrain & Engine Architecture
The M817’s powertrain is a complex and sophisticated system centered around the DFMC15TE6 1.5-liter turbocharged inline-four engine. This engine produces 197 horsepower and 290 Nm (213.89 lb.-ft.) of torque. It utilizes direct fuel injection and a double overhead camshaft (DOHC) valvetrain for efficient combustion. The engine is paired with a 31.7 kWh lithium iron phosphate (LiFePO4) battery pack, providing a substantial all-electric range of 110-140 km (68.35 – 86.99 mi). The vehicle employs a dual-motor setup, with one electric motor integrated into the transmission driving the front wheels (272 Hp, 350 Nm) and another electric motor driving the rear wheels (279 Hp, 410 Nm). The combined system output reaches an impressive 687 horsepower and 848 Nm (625.45 lb.-ft.) of torque. The transmission is a 2-speed Direct Drive Hybrid (DHT) automatic, designed to optimize efficiency and performance in both electric and hybrid modes.
Driving Characteristics
The M817 1.5T delivers a remarkably responsive driving experience. The instant torque from the electric motors provides brisk acceleration, with a 0-100 km/h time of just 5.2 seconds. In electric mode, the vehicle offers near-silent operation and smooth acceleration. When the gasoline engine engages, the transition is generally seamless. The DHT transmission effectively manages power delivery, providing adequate gearing for both on-road cruising and off-road challenges. Compared to potential lower-powered variants (if offered), the 687 hp version provides significantly more performance, but at the cost of increased complexity and potentially higher maintenance requirements. The all-wheel-drive system, coupled with the adjustable air suspension (optional), enhances traction and stability on various terrains.
Equipment & Trim Levels
The M817 1.5T is positioned as a high-end trim level within the M-Hero lineup. Standard features typically include premium leather upholstery, a large touchscreen infotainment system, advanced driver-assistance systems (ADAS) such as adaptive cruise control and lane-keeping assist, and a panoramic sunroof. Optional extras may include the aforementioned air suspension, upgraded audio systems, and various interior customization options. The interior design emphasizes luxury and technology, with a focus on creating a comfortable and connected driving experience.
Chassis & Braking
The M817 features a robust chassis designed to handle both on-road and off-road conditions. The suspension utilizes coil springs and double wishbones at both the front and rear, with an optional air suspension system available for enhanced ride comfort and adjustability. Ventilated disc brakes are employed on all four wheels, providing ample stopping power. The vehicle also incorporates ABS (Anti-lock braking system) and, optionally, a 4-wheel steering system (4WS) for improved maneuverability.
Market Reception & Comparison
As a relatively new entrant to the market, the M-Hero M817 has garnered attention for its impressive performance and advanced technology. Initial reviews have praised its acceleration, handling, and luxurious interior. The plug-in hybrid powertrain offers a compelling combination of efficiency and power, appealing to environmentally conscious buyers. Compared to other PHEV SUVs in the Chinese market, the M817 stands out with its high horsepower output and robust off-road capabilities. Fuel economy figures range from 0.7-7.24 l/100 km, depending on driving conditions and battery charge level.
Legacy
The long-term reliability of the M817’s powertrain remains to be seen, as it is a relatively new vehicle. However, M-Hero has invested heavily in developing a durable and reliable hybrid system. The LiFePO4 battery technology is known for its stability and longevity. In the used car market, the M817 is expected to hold its value well due to its unique combination of performance, luxury, and environmental friendliness. Its advanced technology and powerful powertrain will likely make it a desirable option for buyers seeking a premium plug-in hybrid SUV.
