I found this link a long time ago but just realized now would be a good opportunity to add it to the car comparisons section. It lists primarily Japanese car specifications while it also crosses over into some European and North American makes in the gallery.

http://www.cars-directory.net/

It may not cover a lot of cars that are Philippine-spec but at least you can get a good estimate of their specifications. Maybe you can also use this thread to list down database websites that you know of.

Hope it helps!