well, from what i could gather from my short 10km drive i had on the spark in pune, and then a return ride in which i sat behind, i think its on the better side in the segment. we own a wagon r and zen back home and in comparison to them, the back seat did feel spacious. in number, the shoulder space is 1254mm..comparing to it bigger cars, getz is 1333mm, U-VA is 1355mm
Min rear legroom (with the front seats pushed back all the way) is 670mm, which is more than the likes of U-VA and Palio
In Delhi, the car is on display already, do look out in ur city