Tesla has spearheaded a new round of low-interest, long-term loans to spur electric vehicle (EV) sales in mainland China, prompting domestic rivals such as Nio and Xpeng to follow suit in a cutthroat market grappling with raw-material inflation. However, fresh competition in car financing – while better than another bruising discount war – may not be enough to shore up deliveries as consumers refrain from buying cars due to reduced government incentives. “All EV makers are facing a dilemma this...