Car production in Thailand declined 7.02% in October from a year earlier to 158,734 units on weak domestic sales, the Federation of Thai Industries (FTI) said on Thursday.
The figure compared with September's 8.45% year-on-year fall.
Domestic car sales in October declined 8.75% year-on-year after September's 16.27% on-year drop, due to tighter autos loans, said Surapong Paisitpattanapong, a spokesperson for the FTI's automotive industry division.
Thailand is a regional vehicle production and export base for some of the world's top carmakers, including Toyota and Honda.