Any car failing to meet the Euro 6 standards in real world testing would move up a band, and thus pay anything from # 15 to # 500 more in first year rates. (evo.co.uk)
These are known as «First Year Rates» and range from # 120 for a CO2 figure of 131 - 140 g / km to # 1,030 for a CO2 figure of over 255 g / km. (politics.co.uk)
The aim of «First Year Rates» is to make buyers fully aware of the environmental impact their new car will have. (politics.co.uk)