Not much bigger difference in 1.6 or 1.3 amazing,fuel average is more a less same around 10~13 depends upon your driving style, if you want power even a 1.3 will not let you down(but please avoid stupid street races) both have minor cosmetic differences except sunroof, rest GLX version of both engine displacements are same only 1.3 GL is with base black interior,so go for the one you find in best desired condition.