@BInayperiwal
another nano member here.
On the owner's manual, it says not more than 60 kmph for first 1000 kms.
i guess it will be on the windshield too.
follow the speed and gear shifts mentioned with minimum breaks. you will definitely get the mileage said by tata
you have alloy wheels or the steel wheels?
for me the light glows at 110kmph and the fuel cuts off
no steering vibrations till 100KMPL. i guess a wheel alignment is requires. better get this done in mrf T&S. i dont recommend TASS because i lost my front 2 tyres in 10000km due to their improper alignment. it will not cost you more than 1000(for me here in tamilnadu wheel balance+alignment+front 2 tyres change= 850rs)