The Scion xD doesn't quite live up to its promise: the boxy shape has good interior space, but the seats aren't comfortable, and the cabin's not very quiet.
The front seats are good enough for short-distance commuting, but on longer drives, they become a sore spot with our admittedly tall test drivers. The seats are more thinly padded than most, and the bottom cushions are short, which leaves drivers without much support. The xD's tilt steering wheel doesn't telescope, either, an issue for very tall drivers. The former's a common complaint we have with many small cars, and it's very noticeable here; the latter's becoming less and less common.
There's not all that much cargo space behind the rear seats, but once they're folded down, the hatchback space opens into a nicely sized cargo hold, accompanied by the xD's numerous cubbyholes and storage bins.
Fit and finish is typical small-car Toyota, which is to say that assembly quality is top-notch but materials are a bit behind the curve, with more hard plastics than you'll find in rival models. And while the xD's upright profile pays off in lots of interior space, wind noise is somewhat higher than other small hatchbacks.