Recasts and writes through

By Praveen Paramasivam and Chandini Monnappa

THOOTHUKUDI, India, Aug 4 (Reuters) - Vietnamese electric vehicle maker VinFast VFS.O began operations at a new plant in India, its first overseas factory, on Monday, and said it hopes to source more parts locally and that it had received orders from Sri Lanka, Nepal and Mauritius.

The loss-making carmaker has struggled to break into developed Western markets and its foray into India, the world's third-largest auto market, will be a key test of its vehicles' popularity and its business acumen.

The plant in Thoothukudi in the southern state of Tamil Nadu has an initial capacity to build 50,000 EVs annually, scalable to 150,000. Its first vehicles will be two premium electric SUVs, the VF 7 and VF 6.

VinFast has talked with several of its component suppliers, and some want to shift part of their production to the industrial park in India, VinFast Asia CEO Pham Sanh Chau told Reuters.

The company plans to roll out cars to Indian showrooms later this month, he added. The pricing of the vehicles has not been disclosed.

Though the orders from other nations mean the plant could evolve into an export hub, VinFast's immediate focus remains on Indian customers, Chau said.

Last year, VinFast agreed with Tamil Nadu state to invest $500 million over five years and to work towards up to $2 billion in investment.

Success in India will be key if it is to meet its global delivery target of 200,000 cars for 2025. It sold about 72,100 in the first half of the year, primarily in its home market.

Backed by Vietnam's largest conglomerate Vingroup VIC.HM, VinFast plans for a plant in Indonesia to be up and running by the end of the year, Chau said. Production in the U.S. has, however, been delayed until 2028.

The company also said it plans to eventually expand its other businesses to India, including its electric ride-hailing service.

(Reporting by Praveen Paramasivam in Thoothukudi and Chandini Monnappa in Bengaluru; Editing by Sonia Cheema, Jamie Freed and Edwina Gibbs)

((Praveen.Paramasivam@thomsonreuters.com; +91 867-525-3569;))