I've had the US model Yaris liftback a few days now, and like it. Some comments:
1) In daytime the speedometer looks a bit dim, exacerbated by glare reflected from the semicircular gray "shelf" in front of it. At a craft shop I found a sheet of stiff black felt and cut a piece to cover that "shelf." The reduced reflection on the speedometer's face resulted in enhanced contrast. Toyota should reward me for this design improvement :^)2) My Garmin 2610 GPS unit (beanbag mount) sits nicely on the dash just above the steering wheel, and thanks to its speed readout I rarely need to glance over at the central speedometer. In fact if you don't really pay attention to the idiot lights on the speedometer, you might as well put the Garmin right on the shelf in front of the speedometer and boast of your "digital" speedometer. I do find that when the 2610 is placed above the steering wheel, its shiny top is reflected in the windshield when the sun is bright, and can be a distraction when you're looking straight down the road.
3) Position of the driver's seatbelt anchor is not adjustable. Because of my 5'11" height I racked the seat all the way back for a pleasant stiff-arm driving position, but found the belt too near my neck. A cheap belt clip allowed a more comfortable fit on my shoulder.No MPG figures yet, still on first tank. Couldn't find a stick liftback, had to settle for auto but enjoying the car all the same. With rear seat folded down it's a great cargo hauler for its tiny size. I'm totally satisfied; the car met my requirements for a small car with good MPG but still with some "personality." The tight turning radius is great. All dealers in my area are asking MSRP price, treating the Yaris just like Scion. Still in very short supply in northern Virginia.