The main contributor to green house gas emissions from electric cars is from their use, not production. If you want to reduce your carbon footprint electric cars is still a good choice [1].

The LCA literature shows the main contributor to GHG emissions of EVs is the use, and the most important factors in estimating those emissions are the electricity mix, vehicle lifetime, and driver behavior. Battery manufacturing and battery end of life are still being developed and researched, and manufacturing batteries is a large contributor to the manufacturing emissions of EVs.[1]

[1] http://link.springer.com/article/10.1007/s40518-015-0033-x