Rebecca Jackson discusses the pros and cons of purchasing an electric car, focusing on the miles per charge ratio of various models and the effect an electric car could have on your home electricity bill. Visit the Telegraph Cars website for full reviews of the latest cars on sale: http://www.telegraph.co.uk/cars/ Follow Telegraph Cars on Twitter https://twitter.com/TeleCars Read the latest car news: http://www.telegraph.co.uk/cars/news/