Domestic car sales shrank for a 10th straight month in March, slumping 41.74% from a year earlier to 60,105 vehicles, hit by the coronavirus outbreak, the Federation of Thai Industries (FTI) said on Thursday.
Sales in February dropped 17.1% from a year earlier.
The FTI said it may again cut its forecast for 2020 sales, which it lowered by 50,000 to 950,000 last month.
In 2019, car sales contracted 3.3% to 1 million units.
Thailand is a regional vehicle production and export base for the world's top automobile manufacturers.