
They use different technologies and follow different approaches. Here are the relevant details: 1. Technical Differences: Although BYD's DM-i and the previous DM technology have similar names, DM-i is a completely redesigned plug-in hybrid system. The most fundamental difference is that the previous DM used parallel direct drive, where both the engine and transmission could drive the vehicle, while the engine and kinetic energy recovery could also charge the battery to support the electric motor in driving the vehicle. 2. Approach Differences: DM-i models focus on fuel efficiency rather than the performance-oriented approach of the past. They adopt a series-parallel hybrid form, with both the engine and motor using single-speed transmission. Therefore, the BYD Tang DM-i only has a single-speed reducer instead of a traditional multi-gear transmission. As a result, the biggest highlight of the BYD Tang DM-i product is its excellent fuel economy.


