Don’t consider this negative reviews at all. Think what TATA has given in nano in 1.7 lac.( full version)
It has Aluminium engine, which quickly overtakes 4 maruti 800 at a time, which has very old cast iron engine. It has tubeless tyres. It has the least turning radius.
It has hollow steering which prevent’s brain haemorrhage at severe accidents. It has air density and humidity sensor, which controls fuel supply according to quality of air, so performance of engine is not affected by change in environment.