generally, diesels are more "waterproof" than gasoline engines because of the lack of electrical components to run it. though i'm not too sure if it holds true for new crdi-run diesels. but whatever type of engine, it would still depend on like what nicky said, ride height, position of intake and alternator.

some suvs have stock water separators in their intakes and the alternator is located as high as the top of the engine for such purposes.

i dunno much about the engine layout of current suvs, but i would still put my money on the likes of the pajero, patrol and alterra. the only mini-suv in mind is the jimny and vitara. this is simply based on the heritage of said vehicles. i'm really not confident with the crossovers'/cuvs' ability for this.

pero tingin ko at least 8 inches of ground clearance is sufficient to tackle most floods in the metro.