Often when looking for cars, i try to refine the search by engine size and this has often proved unreliabled. For example, Mazda Cx-5 come in 2L (1.997cc) and 2.5L (2.488cc) engines size. Your options are to choose every 500cc So if i look for a 2.5L and i only choose 2.5L to 2.5L, i'll be missing a bunch of them as some sellers put the true cc of 2.488 size and some round up.  If i search for 2L to 2.5L , i get a whole lot of 2 L engines and need to refine through all of those, and there are hundreds of them. And this is just an example with one car, but i had this happening quite often wi...