The lack of a clutch pedal.
shatter off the fmic
Also I like the following things in my car (when it has no faults)
Boost
Comfort <----------------- REALLY??? lol
Rarity
Colour
Small Size - easy to park
Small Size Engine - cheap on tax/service
Also that it's quite small and just 1.3 L but can beat many big engine cars and that is the way to think of a car which is efficient, smart and changes people's point of view on small engines!
Oh Yeah and my missus like it as well.