I am going to stand up for the Jazz and this is from a three wheeler owner.
Had one as a lease car for four years. Best all round car I have ever had.
Yes it was slowish and a little noisy but actually handled really well and had rock hard suspension which I happen to like. . They should have done a hot hatch version.
Load carrying capacity was amazing for a car with the same footprint as a Polo.
The magic seats are genius and I have no idea why they are not copied. Visibility was superb.
The car was horribly unreliable however. The courtesy lamp bulb failed after four years and I did have make a right stink about that.
Apart from that catastropic failure it was great. :):):)