Promotions and incentives amid the price war boosted deliveries but could weigh on profits, experts say.
While NIO's deliveries jump 234% to 20,544 units in May, Tesla (TSLA) issues a recall of 125,000 vehicles over seat belt issues.
Chinese EV makers NIO, XPeng, and Li Auto delivered almost 66,000 vehicles in May, up 29% from April, and up 57% year over year.