we test drove one before we bought our 3, and i also had one as a loaner for a weekend.
here were my impressions:
sporty, actually fun to drive. mechanically, it is the same as the 3, just a bit softer riding. it's only 5 inches longer than the 3, so it can still park incredibly easily.
all four seats in rows 2 and 3 have top tethers, but IIRC, LATCH was only on the second row? maybe i'm wrong on that. and to echo what namegirl said, yes it is very easy to flip the 3rd row seats up and down.
if you have carseats installed in all four seats (3rd row up), a double stroller may be a tight fit back there. depends on the stroller. our maclaren double fits, i tested that, but something like a tandem might not.
with the 3rd row down, the space is huge. it doesn't look like it from the outside, but it is. you can also have one third row seat up and one down if you have three carseats, this still gives you a lot of storage space.
fuel economy is not terrific given that it is only a 4-cylinder, but it's still better than any of the six-cylinder large vans out there. still, it could be better, all things considered.
neither NHTSA nor IIHS has tested it in the US, but euroNCAP gave it its top ranking of 5 stars, as did japNCAP, the japanese govt crash testing agency. it does come with front side impact airbags and side curtain airbags for all three rows standard, but it does not come with stability control, not even as an option.
it's a pretty good deal at about $18k base price, and it's probably the only 6 passenger vehicle you will find with all its features for that price. for $20-21k you can get a nice option package which adds climate control, sunroof, and a bunch of other goodies.