I just bought I 20 petrol Sports model on12th Aug 2010, Ive been planning to buy Accent since it was a Sedan, earlier I was driving M-800 and santro, but once I test drove it, it is simply amazing, it is only few mm shorter than accent and its very much wider than that, in total it is bigger than Accent, key features are, real smooth telescopic steering with audio controls, fully automated ORVMs, very good quality stereo with USB and aux port, stylish keys with key-less entry, which is not there in Magna. I have completed 1200 km and so far I have taken 14 km of mileage in Delhi city always with AC.
I hope it gets better after service, and not to forget MID(multi information display) in the middle + AC with Automatic climate control, Before buying this car I have read so many reviews on mouth-shut, most of them complained about the AC, but believe me, in new models the AC is really chilling, specially with the Automatic climate control, I wud suggest if anyone comparing Swift or I 20, simply go for I 20, this car will really take good care of you.