reviews the 2013 Tata Nano. Often referred to as the world's cheapest car, the Tata Nano has come into the limelight for being a close alternative to 2-wheelers. The Tata Nano has been updated twice since launch. The 2013 update is not a major one and the Nano gets more features and minor styling tweaks.br br Powering the Tata Nano is a 624cc, twin-cylinder engine which produces a modest 38 PS of power. The Nano has quite a lot of space on the inside and the vehicle returns an impressive mileage of 18-20 kml in city conditions. Tata Motors is also working on a diesel Nano which will boost appeal of this vehicle drastically.