I personally do not have this bike but My friends have this bike and I used this many times and Its very comfortable and fun to ride this bike because this bike provides you the best handling and racing experience in this budget.
I have a good experience of riding many bikes and know a little more than others about bikes because I am passionate about bikes. Here is my experience what I think about Yamaha R15 2.0.
Mileage: This bike can provide upto 35kmpl to 42kmpl according to road and riding conditions. To increase your mileage you must check the air pressure every couple of days, service your vehicle on time, use power fuel, avoid rush and rough driving.
Comfort: This bike is only comfortable for rider not for the other person sitting behind you. If you are riding the bike then you will enjoy the riding but you can not enjoy if you are sitting behind as compared to other normal bikes. So basically this bike is more comfortable only for drivers and for driver in comparison to pulser and bullet, it is not much comfortable for long rides because after riding for a long continuously your back may start paining, which is not good for health.
Reliability: As this bike gives very good performance in terms of suspension, acceleration, handling and road grip, this is a reliable bike.
Road Grip: Yes this bike provides a better road grip while riding on highways and taking sharp turns. Engine is very powerful compared to pulser.
I would like to recommend this bike you are searching for a racing bike in low budget then it would be the best option under 1.5 lacks.