This is in regards to your query posted on the website CarDekho.com, we would like to inform you that as of now, Tata Nano is available in petrol variant only and the company has not disclosed the exact launch date for the diesel variant of Tata Nano. Speculations are that the company is planning to introduce the diesel variant of Tata Nano by September, this year.
New Tata Nano with EasyShift is available at Rs. 2 lac (Ex-showroom, Delhi), and the final cost depends on the valuation of your car. So, first get the valuation of your car from authorized Tata dealer, so he can give you a final quote for the new car.