The ULEZ applies to vehicles that do not meet the Euro 4 emissions standards for all petrol cars registered from 2006 onwards and Euro 6 for diesel cars registered from 2015 onwards. Cars breaching the new standards will face an additional charge of £12.50 on top of the Congestion Charge when driving in the ULEZ zone. Motorbikes, buses and coaches exceeding these standards will also be liable for the additional charge.