Firstly, the promised mileage was 417 kms for a full charge as per the brochure. when we took delivery it was 385, but when we charged it first time at home after humungous battle with electricians and electricity board, the mileage has dropped to 272 within a week. Tata motors has all kinds of reasons. they claim 417 km mileage they claim if one drives at 30km speed. why will i need a car if it i have to drive at 30km speed, i might as well walk! didn't expect this from the Tata's at all. just like any other company they are just there to make fools out of retail customers. please do not buy this car. it's full of false promises and deceit.