I wish I could be more constructive, but it is hard to think of anything wrong with this vehicle. We were faced with the decision of buying a new, midscale SUV, or a used, upscale one like an MDX. Boy, are we glad we bought the MDX. If we didn't know, we'd think it was brand new. Do the homework, and you'll find that the MDX offers the most interior room (including a 3rd row seat) in a package that is still midsized. If you want the ability to haul kids all around town in a safe, AWD SUV, but don't want a Yukon or Expedition, then this is the rig for you. There is no comparison to the RX 300, which is tiny compared this this (on the inside).
Interior space, engine strength, 3rd row seat when needed. Lots of interior room without buying a massive vehicle.
Honestly, I can't think of one. And I'm usually pretty critical.