I was able to ride in an Avanza here in Malaysia.
The ride is very choppy... even painted road markings can make the whole back shudder up and down. It made me a bit sick after a few minutes of riding in the middle row (though it might have been because of the curry too :hihihi

. Btw, the roads here in KL is superb, even a 10-year old taxi has a better ride.
The good note is that the materials used inside are very good. None of those tacky sidings used in the Philippine model. Just good looking & feeling plastic. The fabrics too have a nice touch.