The M-Hero M817 Max+ 1.5T 50.4 kWh is a plug-in hybrid electric vehicle (PHEV) introduced by the Chinese manufacturer M-Hero in September 2025. Positioned as a premium off-road SUV, the M817 Max+ represents M-Hero’s entry into the high-performance, technologically advanced segment of the burgeoning Chinese automotive market. This variant, boasting a combined system output of 687 horsepower, is designed to appeal to consumers seeking both luxurious comfort and capable all-terrain performance. It utilizes a sophisticated dual-motor, all-wheel-drive system coupled with a 1.5-liter turbocharged gasoline engine, offering a blend of electric efficiency and extended range. The M817 competes with other high-end PHEV SUVs in China, such as models from BYD and Li Auto, emphasizing a balance of power, range, and advanced features.
Technical Specifications
| Brand | M-Hero |
| Model | M817 |
| Generation | M817 |
| Type (Engine) | Max+ 1.5T 50.4 kWh (687 Hp) Plug-in Hybrid 4WD DHT |
| Start of production | September, 2025 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Off-road vehicle, SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 5.6 sec |
| Acceleration 0 – 62 mph | 5.6 sec |
| Acceleration 0 – 60 mph | 5.3 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Emission standard | China VI B |
| Weight-to-power ratio | 4.4 kg/Hp, 229 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 282.7 Nm/tonne |
| Gross battery capacity | 50.4 kWh |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| Battery location | Below the floor |
| All-electric range (CLTC) | 215 km (133.59 mi) |
| 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 | 3000 kg (6613.87 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 mm (74.76 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) | 216-321 mm (8.5 – 12.64 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 | 17-25° |
| Climb angle | 45° |
| Wading depth | 900 mm (35.43 in.) |
| Drivetrain Architecture | ICE drives front wheels, electric motors drive front and rear wheels. 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 | Double wishbone, Transverse stabilizer, Air suspension |
| Rear suspension | Double wishbone, Air suspension, Transverse stabilizer |
| 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 Max+ utilizes a plug-in hybrid powertrain centered around a 1.5-liter turbocharged four-cylinder gasoline engine (DFMC15TE6) and two synchronous electric motors. The gasoline engine produces 197 horsepower and 290 Nm (213.89 lb.-ft.) of torque. It features direct fuel injection and a double overhead camshaft (DOHC) valvetrain. The primary electric motor, integrated with the transmission, delivers 272 horsepower and 350 Nm (258.15 lb.-ft.) of torque. A secondary electric motor, located on the rear axle, adds another 279 horsepower and 410 Nm (302.4 lb.-ft.) of torque. Combined, the system generates a substantial 687 horsepower and 848 Nm (625.45 lb.-ft.) of torque. The M817 employs M-Hero’s DHT (Dedicated Hybrid Transmission), a two-speed automatic transmission designed to seamlessly blend power from the engine and electric motors. This transmission allows for efficient operation in both electric-only and hybrid modes. The 50.4 kWh lithium iron phosphate (LiFePO4) battery pack is positioned under the floor, providing a CLTC-rated all-electric range of 215 km (133.59 miles).
Driving Characteristics
The M817 Max+ delivers impressive acceleration, achieving 0-100 km/h (0-62 mph) in 5.6 seconds. The dual-motor all-wheel-drive system provides excellent traction and stability, particularly in off-road conditions. The DHT transmission contributes to smooth and responsive power delivery, minimizing gear changes during normal driving. In electric mode, the vehicle offers near-silent operation and instant torque. Switching to hybrid mode allows the gasoline engine to assist during acceleration or when the battery charge is low. The air suspension system enhances ride comfort and provides adjustable ride height for varying terrain. While the M817 prioritizes performance, the added weight of the battery pack and electric motors is noticeable compared to non-hybrid versions, potentially impacting handling dynamics in spirited driving scenarios.
Equipment & Trim Levels
The M817 Max+ comes standard with a comprehensive suite of features, including a large touchscreen infotainment system, premium leather upholstery, heated and ventilated front seats, a panoramic sunroof, and advanced driver-assistance systems (ADAS) such as adaptive cruise control and lane-keeping assist. Optional extras include a high-end audio system, a head-up display, and upgraded interior trim materials. The interior design emphasizes luxury and technology, with a minimalist aesthetic and high-quality materials. The M817 Max+ represents the top-of-the-line trim level, offering the most advanced features and highest performance within the M817 range.
Chassis & Braking
The M817 Max+ features a robust chassis designed for both on-road comfort and off-road capability. The front suspension utilizes a double wishbone configuration with a transverse stabilizer and air suspension, while the rear suspension employs a double wishbone setup with air suspension and a transverse stabilizer. Ventilated disc brakes are used on all four wheels, providing ample stopping power. The vehicle is equipped with ABS (Anti-lock braking system) and 4-wheel steering (4WS) for enhanced stability and maneuverability. The adjustable air suspension allows for varying ride heights, increasing ground clearance for off-road adventures.
Market Reception & Comparison
The M817 Max+ has been well-received in the Chinese market, praised for its powerful performance, luxurious interior, and advanced technology. Critics have noted the vehicle’s impressive acceleration and all-terrain capability. Compared to other PHEV SUVs in its class, the M817 Max+ offers a higher combined system output and a longer all-electric range. However, its higher price point may limit its appeal to some consumers. Fuel economy figures are competitive for a vehicle of its size and performance, with the PHEV powertrain offering significant fuel savings compared to traditional gasoline-powered SUVs.
Legacy
As a relatively new model, the long-term reliability of the M817 Max+ powertrain remains to be fully assessed. However, M-Hero has invested heavily in developing a robust and durable hybrid system. The LiFePO4 battery technology is known for its stability and long lifespan. In the used car market, the M817 Max+ is expected to hold its value well due to its premium features and strong performance. Its combination of power, efficiency, and off-road capability positions it as a desirable option for discerning buyers seeking a high-end PHEV SUV.
