This file photo taken on September 11, 2023 shows BYD electric cars waiting to be loaded on a ship are stacked at the international container terminal of Taicang Port at Suzhou Port, in China's eastern Jiangsu Province. China overtook Japan as the world's biggest vehicle exporter last year, data from the Japan Automobile Manufacturers Association (JAMA) showed on January 31, 2024. (Photo by AFP) / China OUT
This file photo taken on September 11, 2023 shows BYD electric cars waiting to be loaded on a ship are stacked at the international container terminal of Taicang Port at Suzhou Port, in China's eastern Jiangsu Province. China overtook Japan as the world's biggest vehicle exporter last year, data from the Japan Automobile Manufacturers Association (JAMA) showed on January 31, 2024. (Photo by AFP) / China OUT

BANGKOK: Electric vehicle sales are surging in Southeast Asia, led by China's BYD and Vietnam's VinFast, eating into the internal combustion engine car market dominated by Japanese and Korean firms, Counterpoint Research said on Friday.

EV sales in the region more than doubled in the January to March quarter from a year before, according to the research firm. Sales of ICE cars, meanwhile, slid by 7 per cent.

"As Japanese and Korean automakers, who dominate conventional vehicle sales, lag in EV adoption, Chinese OEMs (original equipment manufacturers) are stepping in to fill the gap," said Counterpoint analyst Abhik Mukherjee.

"Over 70 per cent of EV sales in the region are from Chinese brands, led by BYD," he said. In the first quarter of last year, 75 per cent of all EVs sold in Southeast Asia were made by Chinese car makers.

Thailand, Southeast Asia's second largest economy where Chinese car makers have committed more than US$1.44 billion to set up new EV production facilities, is leading the charge.

The regional auto manufacturing hub where Japan's Toyota Motor and Honda Motor have a major presence accounted for 55 per cent of all Southeast Asia's EV sales in the first quarter, with the segment growing 44 per cent compared to last year.

"Vietnam saw an even more impressive growth, with BEV (battery electric vehicle) sales increasing by more than 400 per cent, contributing to nearly 17 per cent of regional sales," the research firm said.

Across the region, China's top-selling EV maker BYD maintained pole position, cornering 47 per cent of the regional market leader, followed by Vietnam's VinFast.

BYD has had early success in Southeast Asia, which is still a small EV market compared to other regions, on the back of distribution partnerships with large local conglomerates.

U.S. electric carmaker Tesla saw its market share in the region drop two percentage points to 4 per cent in the first quarter, in spite of its sales growing 37 per cent in the same period.

A number of Southeast Asian countries, including Thailand and Indonesia, have rolled out incentives to stimulate EV demand and attract new investments - a call answered by Chinese car makers locked in a bruising price competition at home.

"Southeast Asia is becoming a major expansion region for Chinese OEMs," Mukherjee said.