I went on Himachal trip with my friends in MAY 2017 and run car approx 1800 km but AC run only till Chandigarh you don’t believe guys only in 4000 Rupees means a full tank give you 700 to 800 km average and on hills car is making its own stability.
But its on you how you drive. my car speed is 80 to 120 and its skit on every turn so I will suggest you to buy a sedan which is in stylish look with better fuel economy with better stability.