Why Are There So Many Second-hand BYD Tang DM Cars?
3 Answers
BYD Tang DM has a large number of second-hand cars because the BYD Tang has many minor issues and poor resale value, leading many owners to sell them quickly. The Tang DM is a hybrid model. Hybrid models and pure electric models generally have low resale value in the second-hand car market due to concerns about range and battery warranty. Relevant information about car batteries is as follows: 1. Introduction: A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. Typically, the term "battery" refers to a lead-acid battery, which is mainly made of lead and its oxides, with a sulfuric acid solution as the electrolyte. 2. Working Principle: It uses lead plates filled with sponge-like lead as the negative electrode, lead plates filled with lead dioxide as the positive electrode, and a 22–28% dilute sulfuric acid solution as the electrolyte. During charging, electrical energy is converted into chemical energy, and during discharging, chemical energy is converted back into electrical energy.
I think there are several reasons for the abundance of used Tang DM vehicles on the market. On one hand, the technology for new energy vehicles is advancing too quickly. BYD has introduced DM-i and DM-p technologies in recent years, which are much more fuel-efficient than the older hybrid systems, prompting many early owners to trade in their cars for newer models after just two or three years. On the other hand, the batteries in plug-in hybrid vehicles like the Tang DM tend to degrade over time, and replacing them can cost tens of thousands of yuan. Many owners feel it's better to sell the car while it's still in decent condition rather than deal with battery replacement costs. Additionally, the Tang DM has always had high sales volume, so naturally, there's a large base of used vehicles in the market. Another factor is that many cities have phased out preferential license plate policies for hybrid vehicles. For example, in Shanghai, new plug-in hybrid vehicles no longer qualify for green license plates, which has led many owners to rush to sell their hybrids in favor of pure electric vehicles.
From my interactions with car owners, the abundance of used Tang DM vehicles in the market is primarily due to cost-of-use issues. When newly purchased, it's indeed fuel-efficient, but after a few years, the fuel consumption starts to rise, especially in pure fuel mode where it's even higher than that of a regular SUV. After battery degradation, the pure electric range is only about half of the nominal value, making the increased charging frequency particularly troublesome. Moreover, the maintenance costs for the hybrid system aren't low, as both the engine and motor require upkeep, and post-warranty repair costs can be a headache. Nowadays, pure electric vehicles generally offer ranges exceeding 500 kilometers, making people more inclined to switch directly to a new pure electric model. Additionally, BYD's used cars have never held their value well, so owners prefer to sell them off earlier, naturally flooding the used car market.
