G is top of the line with maroon interior, S is most popular & imported variant, L is basics, every varient has Rs.100000/ difference but best to buy is S, u can get details & difference on Toyota website, Toyota introduced Hybrid technology in 97 & it's the oldest & best, Aqua is PriusC in USA & In Pakistan we are use to hybrid cars since 2008-9 & it's very popular no issues.