DM-i (Dual Mode - intelligent) is BYD's advanced technology for electric-first hybrid cars. Cars with this system use a large battery and a powerful electric motor for most driving. Plus, a highly efficient engine and smart controls work mainly to extend range or provide extra power when it’s needed. The result is a plug-in hybrid that feels like an electric car in everyday use, while still offering a long total range and very low fuel consumption on longer trips. Here's how the DM-i system is designed to give an electric-first driving experience:

•    When the battery is full, the car runs like a pure electric vehicle, which is ideal for city driving.

•    When the battery runs low, the engine can start to recharge it or give extra power.

•    The smart energy management system automatically balances the battery, motor, and engine to save fuel, all while keeping the car responsive. The system offers four main driving modes, and each one designed for different situations:

•    EV mode: The car only runs on electricity and uses no fuel as long as the battery is charged.

•    Series mode: The engine powers a generator that either charges the battery or drives the electric motor. The wheels are driven by the motor, not the engine itself. This mode is great for long trips and highway driving.

•    Boost mode: The engine and electric motor work together to generate strong acceleration. The engine can also charge the battery if needed.

•    Charge mode: The engine charges the battery during the drive, giving you more electric range later. All these systems work together automatically to make driving smooth, simple, and enjoyable.

Drivers benefit from:

•    Electric-first driving and very low fuel use

•    Long driving range and flexible driving modes

•    Strong performance when needed

•    Reduced emissions and eco-friendly operation

•    Smart energy management for efficiency

•    Smooth, responsive, and quiet rides

•    Reliable and safe battery technology

•    Practicality for everyday use and long trips

Lower running costs Such advantages are made possible by carefully designed components and systems that work seamlessly together:

•    Blade battery

•    Electric motor

•    Internal Combustion Engine (ICE)

•    Intelligent energy management system (IEMS)

•    Power electronics/inverter

•    Transmission/gearbox

•    Cooling systems

In short, DM-i technology combines the best of both worlds. It delivers smooth, quiet, and efficient electric-first performance while still offering long range and low fuel use for longer trips. With smart systems working behind the scenes, everyday driving becomes easier, practical, and enjoyable without compromising performance or convenience.