I only have official figures for July this year in Thailand, so if you have more complete data please make sure to get in touch!
Now that the new generation Toyota Hilux is at full production capacity, the model is back to the #1 position in the Thai market with an estimated 12,200 sales in July. This is nearly 2,000 sales better than the Isuzu D-Max, #2 at 10,281 registrations. The Toyota Fortuner comes in at #4 with 4,100 sales ahead of the Vios at 3,900 sales. The Honda Civic is 5th and its little sister the City is 6th.
Full estimated July 2006 Top 12 below.
Thailand July 2006 estimated Top 12:
Note: I took the photo during my trip to Thailand in December 2004.