Aston Martin’s chief executive says regulators should judge carmakers on the amount of carbon dioxide their cars emit per year rather than per kilometre.

European Union legislation targeting emissions has already brought complaints from other makers of luxury cars. Aston Martin chief executive Ulrich Bez, however, believes the way the legislation is structured puts Aston Martin at a particular disadvantage. In an interview with the Financial Times, Mr Bez also described the discussion surrounding CO2 and the environment as “a business” and “a political thing”.