The seat is more comfy on the G4, the headrest on the iA pushes my chin towards the chest and there is not adjustment. The G4 is like the Versa S but better equiped. The iA is greater in handling but the ride is a bit bouncy since the tires have a lot of flex. Also visibility on the iA is horrid on the sides. I may keep the iA and get the G4 to replace my Lancer AWC. I love both cars, but I find the Mirage a more honest car.