Emission Zone Checker

Check if your vehicle is compliant with ULEZ, LEZ, CAZ, and ZEZ — instantly and for free.

UK Emission Zones Explained

ULEZ — Ultra Low Emission Zone

All of Greater London

The ULEZ covers all London boroughs. Vehicles must meet strict emission standards or pay a daily charge. Since August 2023, the zone has expanded to cover the entire Greater London area.

PetrolEuro 4+ (generally 2006 onwards)

DieselEuro 6+ (generally 2015 onwards)

ElectricAlways exempt

Charge: £12.50/day for non-compliant cars, vans, motorcycles

LEZ — Low Emission Zone

Greater London

The LEZ operates 24/7 across Greater London and primarily targets heavier, more polluting vehicles. Most cars and small vans are not affected by the LEZ.

Lorries/busesEuro VI required

Large vans (>3.5t)Euro IV+ diesel

Cars & small vansGenerally exempt

Charge: £100/day for non-compliant heavy vehicles; £300/day for lorries, buses & coaches

CAZ — Clean Air Zone

Birmingham, Bath, Bradford, Bristol, Portsmouth, Sheffield

Clean Air Zones operate in several UK cities outside London. Most use Class D, which includes cars. Emission thresholds are similar to ULEZ.

PetrolEuro 4+ (generally 2006 onwards)

DieselEuro 6+ (generally 2015 onwards)

ElectricAlways exempt

Charge: £8–£12.50/day depending on city

ZEZ — Zero Emission Zone

Oxford city centre (pilot)

Oxford's ZEZ is the UK's first zero-emission zone. Only fully zero-emission vehicles (electric, hydrogen) can enter without charge. All petrol and diesel vehicles — regardless of Euro standard — must pay.

Electric / HydrogenCompliant — zero emissions

Petrol / DieselNot compliant, regardless of Euro standard

HybridNot compliant (not zero-emission)

Charge: £2–£10/day depending on vehicle type