Electric car sales will be 29% of total car sales over the full year, it forecasts, up from 24% in the first half. Electric car sales will be 29% of total car sales over the full year, it forecasts, up from 24% in the first half. Australia, Spain, Chile, Vietnam and the US state of California have introduced, or are introducing, tax benefits for electric cars. Growth in electric car sales was particularly strong in Europe, Brazil, Australia, India, South Korea, Vietnam, Colombia, South Africa and New Zealand. On the other hand, electric car sales fell 16% in China - the world's biggest electric car-buying country - in the second quarter.