What happens if I drive a non-compliant car in the ULEZ zone?

If you drive a non-compliant vehicle in the ULEZ without paying the £12.50 daily charge, you'll receive a Penalty Charge Notice (PCN) of £180, reduced to £90 if paid within 14 days. The charge applies every day you enter the zone, including weekends and bank holidays (except Christmas Day). 

Cameras automatically read number plates at zone entry points, and fines are sent to the registered keeper's address. Repeated non-payment can result in increased penalties and debt collection action.