My Friend Purchased Tata Nano Car last year.After 2months Tata motors say through the dealer to take annual maintenance contract ( AMC) of 3600/- In September he report the service centers for some mechanical problem of missing and steering vibration.They service his car and return the complaint is still there as same.Service centers are not carefully attend the warranty vehicles.Because after the warranty period they can billing the work.After one month he report the service center for break problem and viper blade replacing, they adjusted the break and replaced the viper blade.The total bill was 850/- ( spare costs Rs250 and labours charge is Rs600) he asked them what is warranty and why I take the ( AMC) .They told him to ask Tata.He complained to Tata through email but no response from Tata.( Maruti immediately respond to customers) .In my opinion worst car ever.Dont buy it Waste of time and it is not comfortable.