For Toyota & Honda, most of the models are made in Thailand.
for JDM models, you will have to approach the Parallel Importers,
whose after sales services rumoured to be not be as good as the
agents. The purpose of Toyota setting up a plant in Thailand is to
cater models for tropical SE Asia use. Cars for temperate countries
use may not be suitable for tropical countries. Driving habits also
varies from countries to countries, thus the purpose of regional
plants.
There are a few models which have the same specs but different
names, because it is produced in different factories.
Honda Jazz (Thailand) = Honda Fit (JDM)
Honda City (Thailand) = Honda Fit Aria(JDM)
Thailand Accord, 2.4L, 3.5L, Japan Accord, 2.0L & Accord
Euro R.
For Toyota Vios, there's no JDM model. Except that the same 1.5L
VVTI engine is used for JDM models like Toyota Vitz.
For Lexus, all models are made in Japan. Because Lexus has to
maintain a uniform standard to ensure the strictest QC.
Thailand Accord, 2.4L, 3.5L, Japan Accord, 2.0L & Accord
Euro R
Correction: Thai Accord 2.0L, 2.4L, 3.5L; JDM
2007 Accord, 2.0L, 2.4L, Euro R, JDM 2009 Accord
2.4L
All new Jazz are from Japan. For Toyota Vios, there's a JDM
equivalent. Toyota Belta 1.3L.