A number of Chinese electric vehicle stocks fell during afternoon trading on Friday after consultancy AlixPartners said only 15 of 129 NEV brands in the country could be financially viable by 2030.

XPeng (HKG:9868) slid 7% in Hong Kong, while BYD (SHE:002594, HKG:1211) fell around 1% in Hong Kong and Shenzhen. NIO (HKG:9866, SGX:NIO) slipped 1% in Hong Kong, but rose marginally in Singapore recently.

The 15 brands are expected to comprise three quarters of China's total NEV market share by the end of the decade, AlixPartners said Thursday.

China's competitive NEV market, coupled with price wars and a surge in innovation "has also left many companies struggling to achieve sustainable profitability," Stephen Dyer, head of AlixPartners' Asian automotive practice, said.