Automobile and truck sales plummeted by 46.7% from the same period last year, according Federation of Thai Industries data on Monday.
Annual domestic auto sales have declined since May 2013, following the fading effect of a government first-car subsidy scheme, which ended in 2012, when sales surged 81%.
In 2013, domestic auto sales fell 7.7% to 1.33 million cars and are forecast to drop by 13.6% this year, according to Toyota Motor Thai Unit.
Thailand is a regional vehicle production and export base for the world's top car manufacturers.
| Monthly car and truck sales | ||
| Year | No. of units | % change |
| 2014 | ||
| March | 83,983 | -46.7 |
| February | 71,680 | -44.8 |
| January | 68,508 | -45.5 |
| 2013 | ||
| December | 108,688 | -24.9 |
| November | 93,123 | -37.2 |
| October | 88,989 | -37.7 |