Because the EU has a fixed emission target for 2020, it will offset emissions elsewhere (perhaps with more wind power), regardless of the type of car purchased: 38.75 tons of CO2 from a gasoline car, and 16 tons from the electricity produced for an electric car. But, while EU emissions stay the same, most electric batteries come from Asia, so an extra 11.5 tons of emissions will not be offset.
更糟糕的是，在欧盟购买电动汽车实际上会增加全球二氧化碳排放量。因为欧盟有一个固定的2020年排放目标，它将抵消别的排放（也许是用更多风能），不管你购买哪种类型的汽车：38.75吨/汽油汽车；16吨/为电动汽车购买的电力。但是，尽管欧盟排放量维持不变，但大部分电池来自亚洲，因此会有新增的11.5吨排放量不会被抵消。