For example, the vibe & Matrix (!!!), For instance most "classical" SUV looks the same (Pilot Honda, Mazda Tribute, toyota rav4, Ford explorer). Murano, another SUV is distinct from the others. What about minivan. All the same! The dissimilarities lies in the design all together. Look at the back window of the 3. Dissimilar from the SIR. Look at the headlight. Those three circle with that caracteristical style of Mazda headlight as nothing to do with those wide front headlights of the civic. A 5 door, compared to a 4 door. That's what dissimilar is to me.