The price war engulfing China’s electric vehicle industry has sent share prices tumbling and prompted an unusual level of intervention from Beijing. The shakeout may just be getting started.

For all the Chinese government’s efforts to prevent price cuts by market leader BYD from turning into a vicious spiral, analysts say a combination of weaker demand and extreme overcapacity will slice into profits at the strongest brands and force feebler competitors to fold. Even after the number of EV makers started shrinking for the first time last year, the industry is still using less than half its production capacity.

Chinese authorities are trying to minimize the fallout, chiding the sector for "rat race competition” and summoning heads of major brands to Beijing last week. Yet previous attempts to intervene have had little success. For the short term at least, investors are betting few automakers will escape unscathed: BYD, arguably the biggest winner from industry consolidation, has lost $21.5 billion in market value since its shares peaked in late May.