What is ULEZ (ultra-low emissions zone)?
ULEZ (ultra-low emissions zone) is an area that includes most of Greater London, which sees a daily charge applied to older petrol and diesel cars that wish to drive within the zone.
Read our ULEZ guide to find out if your car is ULEZ compliant and how much it'll cost if you want to drive a non-compliant model into the UK's capital city.
Related glossary terms
CAZ - clean air zoneA clean-air zone (CAZ) is a mandate that has come into effect in some UK cities charging drivers of older more polluting cars a fee to enter city centres.NEDC - new European driving cycleNEDC (new European driving cycle) is an older testing standard used to measure a car's fuel economy (mpg) and emissions.WLTP - worldwide harmonised light vehicle test procedureWLTP (worldwide harmonised light vehicle test procedure) is a testing standard used to measure fuel economy and emissions.