Why is there a 30,000-kilometer limit on the Qin DMI?
2 Answers
Qin DMI has a 30,000-kilometer limit due to durability and reliability issues. Here is an introduction to the Qin DMI: 1. Fuel consumption: Qin PLUS DMi is the latest A+ class family sedan launched by BYD, featuring a hybrid architecture that focuses on energy saving and fuel efficiency. 2. Interior: Light luxury aesthetics with a youthful and dynamic feel. Piano lacquer panels, a central console trim strip resembling blue sky and flowing water, a 12.8-inch intelligent floating rotating screen, a wrap-around cockpit, a multifunctional steering wheel, etc., are all applied in this car, making the overall appearance surpass previous models.
Well, speaking of why the BYD Qin DM-i has a 30,000-kilometer limitation, it's actually related to the design of its hybrid system. As an owner who has driven a plug-in hybrid vehicle, I'll discuss it from a technical perspective. BYD's DM-i system relies on a lithium battery to power the electric motor, supplemented by a fuel engine; lithium batteries inherently have degradation characteristics, and their capacity decreases as the number of charge-discharge cycles increases. Thirty thousand kilometers roughly corresponds to several hundred cycles, and the manufacturer set this limit to ensure stable performance within the warranty period of core components; otherwise, excessive battery fatigue could affect efficiency and safety. Over long-term use, I've found that the hybrid system's control module is also prone to fatigue, so setting a mileage limit helps prevent faults in advance; this isn't stinginess but rather protecting user interests based on engineering data. In reality, hybrid vehicles need to balance battery lifespan and fuel economy, so I recommend regular maintenance to extend the driving range.
