Mileage:
If you drive between 80-100 Kmph, It will give you 38-40 kmpl.
If you drive between 65-80 Kmph, it will give you 47-48 Kmpl.
Comfort:
Initially, Now I believe Apache is far More comfortable. One more thing is that Apache has a decent pillion seat. So if you have a girl friend or wife, Apache is better than fazer.
Reliability:
If you are on a budget(75K) and want the best bike for this price, close your eyes and buy the RTR 160. It will be a loyal companion both in cities and on the Hi-ways. and offers great fuel efficiency and low cost maintenance. If you want tubeless tiers. You can go RTR 180.
Road Grip:
The Road grip of Apache Bike so many suggestion to all this the type of Bike which can use or buy each and every person In case it he/she has not lets of money since they can manage in very less in come.