The paragraph below is from a British review of the Honda Jazz.  While
the engine is different, the suspension is probably the same.  I wonder
if the instability he mentions in corners is because of the torsion-beam
rear suspension.

Second Opinion:
We lived with this car for two weeks and tried it out in all sorts of
conditions. I'd better make that point first before going on to say that
the Jazz encapsulates all Honda's current good and bad points to such an
extent that we could almost have written about it without going anywhere
near the thing. The build quality was as fine as we have come to expect.
The interior is as surprisingly spacious as, to take one recent example,
the new-generation CR-V. But the suspension set-up is simply wrong. The
Jazz becomes unhappy at the first sign of a road ripple, and over crests
- particularly ones in mid-corner - it feels like it's about to take
off. Sort that out and the Jazz would be a truly excellent small car,
rather than a very good but flawed one. David Finlay.