BYD is expanding its global electric vehicle push with Dual Mode Intelligent (DM-i) technology, offering “Super Plug-in Hybrids” that prioritize electric driving while eliminating range anxiety common with pure battery-electric cars.
The DM-i system is engineered for electric-first propulsion, where the internal combustion engine (ICE) primarily functions as a generator to recharge the battery. This allows vehicles to operate extensively in quiet, responsive electric mode for daily travel.
The ICE only provides direct drive or additional power when the battery’s charge is low or when higher performance demands arise, ensuring seamless transitions and extended travel capabilities.
BYD highlights the significant combined range of its DM-i models. The SEAL 6 DM-i, for instance, is rated for over 1,450 kilometers (approximately 900 miles) on a full tank and charge. The SEAL U DM-i SUV boasts a combined range of up to 1,125 kilometers (around 700 miles).
Fuel efficiency figures vary across models and operating conditions. For example, the SEAL 6 DM-i sedan reports a combined consumption as low as 1.5 liters per 100 kilometers in a blended cycle, an exceptionally high figure reflecting its electric-dominant design. Other DM-i models typically achieve between 6.4 L/100 km and 7.4 L/100 km when the combustion engine is primarily active.
These plug-in hybrids utilize BYD’s Blade Battery, known for its high safety standards, including surviving a nail penetration test. The battery’s compact design also contributes to optimal space utilization and enhanced structural rigidity of the vehicle.
The system is supported by a highly efficient 1.5-liter internal combustion engine. This engine is optimized to minimize fuel consumption when generating electricity or contributing to propulsion.
Some DM-i models, such as the SEAL U DM-i, feature Vehicle-to-Load (V2L) technology. This allows the vehicle to export up to 3.3 kilowatts of power to external devices, turning the car into a mobile power source for outdoor activities or emergencies.
BYD positions DM-i technology as a differentiator by offering a dominant electric driving experience without the “charging anxiety” associated with pure battery-electric vehicles. It aims to deliver a green solution through reduced emissions in electric mode and high overall energy efficiency.
This strategy appeals to both long-distance drivers, who benefit from reduced fuel consumption and extended range, and urban commuters, who can maximize electric-only operation for daily trips.