LONDON — The U.K. government has announced that supercar brands McLaren, Aston Martin and Bentley will be exempt from new electric vehicle sales quotas, as it finalizes a long-awaited industry review. Under the Zero Emission Vehicle (ZEV) mandate, manufacturers are fined if they miss targets for new electric vehicle sales as a proportion of total sales each year. The fines ratchet up every 12 months, with an earlier intention of phasing out sales of new diesel and petrol cars by 2030.