We don't think we advertising falsely, really we don't.
We know that info about cars with room for three child seats is one of the most-searched terms on MN and that there are many many threads about this. There's one here, for example.
But thank you for posting: it's made us realise that quite a lot of these threads are in our Car seats topic, not our (newish) Cars topic. We should def do something about merging them/moving them over.