The reason list looks so unexpected is because it is purely based on search basis not buying basis. I mean people search for cars even if they are not buying it.
Yes & besides this, people in this segment buy based on mouth review rather than reviews available online. Besides this, above 20L, there comes a brand loyalty. I know few people who don't buy anything outside Merc stable, don't even look at Audi or BMW. Similarly, I know a guy who owns 3 BMWs and he doesn't look at Merc or Audi. Brand loyalty plays big role in cars above 20L.