Quick Question
 

The dealer replaced my gapped splash guards today and, quite honestly, the new set isn't much better.

My question is can I just remove the splash guards and not use them and will it leave drilled holes in the wheel wells?

Do most of the cars have them or not?

Can't really give you a good answer because I've never installed them before, but that's pretty odd that they are not fitting for you. Fitment is just fine on mine.