1.As per as efficiency is concern, electric motor don't give more than 80% efficiency and efficiency of a DC motor comes down as it gets heated during operation.And you are using electrical energy to charge your battery, which my be getting generated again in some thermal power plant, so there is also some loss are liked to happen.And when you will add up all these effeciencies, you may find EV is poor in terms of effeciency to a IC vehicle. 2. Noise may be less, but again noise is not a problem as, all IC vehicles comming these days are silent and vibration free 3.Pollution is again linked with effeciency as a whole. More over, where you will dispose the toxic batteries? 4. Maintanace cost may be higher due to high cost of battery and you don't have any choice other than to replace batteries.
