I have Tata nano LX. Ihave driven 32000 km since I purchase it in 2012.(5yrs back). 90% of time it was driven in highway i.e Mumbai estern xpress highway.It gave average of 20 in Ac& 23 in non Ac Thrice I have driven without any stoppage continuously for 5hrs.I have used this car very roughfly still it is zero maintenance car.
Pros: good height , spacious, Powerful AC, small & convenient to park,ground clearance 180mm........,..
Cons: power 624cc engine