What are the differences between BYD Han DM and DM-i?

[DelBrianna]

The differences between BYD Han DM and DM-i lie in their technology, motors, displacement, transmissions, and drivetrains. The specific details are as follows: Different Technology: The design goal of DM-i is fuel efficiency, while DM focuses on performance. The selection and configuration of the motor and engine are based on these design goals. The 2.0T engine equipped in DM has stronger performance data but uses more traditional technology. In contrast, the latest 1.5T Xiaoyun engine in the DM-i system adopts the Miller cycle, featuring more advanced technology, higher thermal efficiency, and lower fuel consumption. Different Motors: Although both use permanent magnet synchronous motors, DM-i models all feature a front-mounted single motor, available in 145kW and 160kW versions. DM, on the other hand, offers a rear-mounted single motor version with 180kW, as well as two dual-motor models with front + rear (250kW + 180kW) configurations. Different Displacement: Both are equipped with turbocharged engines, but DM uses a 2.0T engine with a maximum power of 192 horsepower (141kW) and a maximum torque of 320Nm. DM-i, however, uses a smaller 1.5T engine with a maximum power of 139 horsepower (102kW) and a maximum torque of 231Nm. Different Transmissions: DM is equipped with a traditional 6-speed wet dual-clutch transmission, while DM-i uses an E-CVT continuously variable transmission. Different Drivetrains: All DM models are four-wheel drive, while DM-i models are all two-wheel drive. The "core philosophy" of DM-i is to prioritize electricity and use fuel as a supplement. Structurally, DM-i Super Hybrid is based on a large-capacity battery and high-power motor. The vehicle relies on the high-power motor for driving, while the gasoline engine primarily functions to charge the battery. It only directly drives the vehicle when more power is needed and works in synergy with the motor to reduce load. This hybrid technology differs from traditional hybrid systems that rely heavily on the engine, thereby more effectively reducing fuel consumption. DM adopts a Dual-Engine Four-Wheel Drive platform architecture. Older models featured not only Dual-Engine Four-Wheel Drive but also Triple-Engine Four-Wheel Drive. Under this Dual-Engine Four-Wheel Drive architecture, DM can achieve five driving modes: EV Pure Electric, HEV Parallel, HEV Series, HEV High-Speed, and HEV Energy Recovery. Technologically, BYD has developed three major systems for DM: torque management, energy management, and thermal management. From the analysis of the above modes, it is clear that the smooth execution of each mode relies on torque management and energy management. Torque Management: If the engine torque is sufficient for overtaking, the motor does not need to start, saving electricity. If the P4 motor is sufficient for EV pure electric driving, the front P0 motor does not need to start. Energy Management: If the battery charge is insufficient, the vehicle will drive in series mode. At higher speeds, it switches to HEV high-speed mode. If the battery charge is sufficient, the vehicle can use the higher-quality EV pure electric mode or the HEV parallel mode for a quick start. BYD's hybrid technology is collectively referred to as "Dual Mode," abbreviated as DM. The timeline of DM evolution is as follows: in 2008, DM1 was introduced; in 2013, DM2 was released; in 2018, it was updated to DM3. The current DM-p and DM-i are not considered DM4 by BYD's official standards but are technological derivatives of DM3.

[StEverly]

Last year, I test drove the BYD Han DM and DM-i models, and the main difference I felt was in the driving style. The DM-p version, which stands for the high-performance dual-mode hybrid, delivers explosive power when you hit the accelerator, with noticeable rear-wheel pushback—it feels like driving a sports car, especially suitable for high-speed or mountain road racing. However, it consumes more fuel during daily commutes, averaging around 6-7 liters per 100 km in city traffic. On the other hand, the DM-i, the intelligent hybrid version, offers smooth starts without any jerking. In the city, it mainly relies on the electric motor, resulting in ultra-low fuel consumption—I recorded an average of 4-5 liters per 100 km. For long trips, it can switch to fuel to extend the range, and the total driving range is longer than the DM-p, making it more family-oriented. Additionally, the DM-p often comes with all-wheel drive and a more powerful battery, while the DM-i prioritizes comfort and fuel efficiency. For commuters like me, the DM-i is both cost-effective and hassle-free, but driving enthusiasts would definitely prefer the DM-p.

[OKeegan]

As a car owner with some automotive knowledge, I believe the core difference between the BYD Han DM and DM-i lies in their powertrain systems. The DM-p is performance-oriented, featuring a dual-motor layout that combines front and rear wheel drive with a fuel engine, delivering astonishing acceleration (0-100km/h in 3-4 seconds) and rock-solid handling. However, its fuel consumption spikes significantly when the battery is depleted, and daily maintenance costs are slightly higher. The DM-i prioritizes fuel efficiency, primarily operating as a range-extended electric vehicle where the engine mainly serves as a generator. It offers smooth and quiet driving with minimal engine intervention sensation, sufficient pure electric range for daily commutes, and perfectly controlled fuel consumption - nearly cutting fuel costs in half. Their battery capacities also differ: the DM-i has a smaller but more intelligently managed battery, while the DM-p's larger battery supports stronger performance. From personal experience, the DM-i suits city crawling, whereas the DM-p loves long-distance adventures.

[Santana]

From a cost-saving perspective, there's a significant difference between BYD Han's DM and DM-i variants. I've done the math: the DM-p performance version starts tens of thousands yuan higher, burns through a full tank quickly, often requires 95-octane gasoline, adding hundreds more to monthly fuel costs. The DM-i intelligent version, however, has a lower entry price, consumes just over 4L/100km, runs fine on 92-octane, and slashes monthly fuel expenses dramatically. Maintenance costs are similar, but DM-p's higher horsepower accelerates part wear and carries slightly higher insurance premiums. For range, DM-i goes farther between fill-ups, ideal for worry-free long trips. For my needs, choosing DM-i is the frugal choice - saving 20,000-30,000 yuan over five years of ownership. The DM-p only justifies its premium if you're passionate about performance driving.