The competition between the world's biggest NEV makers intensifies, as BYD and Tesla both broke monthly records for new energy vehicle deliveries in China in September, according to a report by Wall Street Journal.

Shenzhen-based BYD made a record high of almost 95,000 EV deliveries in September according to the report by Wall Street Journal. The total sales of BYD, including hybrids, also hit a record high of 201,000 units last month.

US EV maker Tesla delivered over 83,000 Model 3s and Model Ys from their Shanghai plant in September, breaking the company's monthly record, the report said, citing data from the China Passenger Car Association.

With assembly lines upgrading in July, Tesla's Shanghai plant can crank out over 750,000 units a year, the company said.

The competition between the world's leading EV companies intensified this year after BYD abandoned the production of traditional gasoline-powered vehicles to fully focus on new-energy cars.

BYD has dominated the Chinese domestic auto market this year with monthly year-on-year sales of electric and plug-in hybrid vehicles rising more than threefold on average this year, backed up by its production ability of batteries and auto parts to ensure stability along its supply chain.

With comparative advantage in the domestic market, BYD is also expanding abroad with several successful cases. Sixt SE, a German rental-car company, said last week that BYD will supply its fleet with several thousand EVs by the end of this year. The company is expected to purchase a total of 100,000 EVs from BYD by the end of 2028, Sixt said.

BYD also exported 100 Tang sports-utility EVs to Norway last year, while supplying electric buses for public transport in multiple countries including the UK, Sweden and Spain.