kashif:
there is some diffirence between 4afe and 4age. the 4afe engine is designed fuel economic (fe,, narrow gap between twim cams), where 4age is not as such. (ge head wide gap between cams and 3 intake valves per cylinder).
4age mileage varies on how much one throttles it. at low rpm range of 2.5 to 3 k rpm.. mileage is more. , due to better torque one can easly shift gears and drive car without having lack of accleration with a/c on. Id say mileage is ard 9 approx.
but you tend to drive car hard on higher rpm range, mileage drops from somewhere 6 to 8.