Something interesting I just found out is that China has even stricter emission standards for cars than Europe.
From left to right: China 5, China 6a (current), Euro 6d (current) and China 6b
From what I've heard, China 6b will be implemented in 2023, or maybe delayed a couple years. The biggest problem with it is that the particulate standards are incredibly high and will require cars to install a particulate filter, which will reduce engine power and cause heating issues for turbos.
Personally I think this is too fast. Chinese auto companies are still uncompetitive in terms of engines and this move could kill a lot of companies, even more than the current slaughter of companies like BAIC, FAW, Dongfeng, Brilliance, JAC. Other than BYD and maybe GAC, all the other companies are not transitioning fast enough to EVs. This move could kill them before they make the transition
Awesome, let's kill these slow moving companies. Remember this one?
BYD seems to be pretty proud of its Xiaoyun engine. It was, until very recently, the most thermal efficient mill in mass production. According to BYD, it manages to convert 43% of the chemical energy contained in gasoline into movement. Before that, Toyota had the best work in that regard with the Dynamic Force 2-liter engine (41%). BYD’s kingdom was brief: Geely announced in November the DHE1.5 engine, capable of delivering 43.32% in thermal efficiency. As remarkable as that is, that's still very far from EVs.
Engines from Chinese automakers are really competitive. Don't underestimate them. If the legacy automakers can't handle the stricter emission standard and can't transition to NEVs fast enough, let them all die. And then, the fittest ones like BYD can take over and produce cars people actually want. I would venture to guess that the stricter emission standards are far more problematic for GM or Stellantis than Chinese cars.