I can tell you not on all Thai built ones, my one was a JAP built. i dont think mine was that severe. but it sure does have the clunking noise from the bottom end could be the initial problem, and this is proven as my other friend's in SA does have the same sound thats 3 in 4 cars ratio. tried to rectified it with Dealer, they say they "tried" and said nothing wrong with the car. This was coming from an engine that was serviced every 5000KM! I am now still skeptical lol why.

you guys who unaware, try to listen your engine while on idle, see if you engine sounds "fine" listen for sounds from the bottom not the injectors.