ULEZ Rules Explained: Charges, Zones and Exemptions

How to do a ULEZ check

The quickest way to find out whether a vehicle must pay the ULEZ charge is the official TfL ULEZ vehicle checker at tfl.clean air zones guidance on GOV.UK. A ULEZ check by reg takes under a minute: enter the registration number, confirm the vehicle details shown, and the tool states whether the vehicle is ULEZ compliant. If it is not, the result also shows the daily charge that applies. This ULEZ registration check works for any UK registration, so a buyer can run a ULEZ check UK-wide before viewing a car. The result is based on the emissions standard the vehicle was built to, not its age alone, which is why two cars registered in the same year can give different outcomes. Anyone asking how to check if my car is ULEZ compliant should treat the TfL tool as the definitive answer, because it reads the vehicle's recorded emissions data rather than relying on a rule of thumb. A ULEZ compliant check is free, needs no account, and can be repeated as often as needed. For a broader picture of a used car, a free car check can be run alongside the ULEZ result.

What is ULEZ and which area does it cover

ULEZ stands for Ultra Low Emission Zone. It is a charging scheme for vehicles that do not meet set emissions standards, and it now covers all 33 London boroughs, meaning the whole of Greater London. The zone reached that size in August 2023, when it expanded from the earlier North and South Circular boundary. The ULEZ operates 24 hours a day, seven days a week, every day of the year, including bank holidays. There are no quiet hours, no weekend exemption and no days off. A vehicle that does not meet the standard and is driven inside the zone on any day is liable for that day's charge. Because the boundary now follows the Greater London Authority area rather than a ring road, drivers who previously sat outside the zone may find themselves inside it. Checking a postcode against the official ULEZ zone map before a journey is the simplest way to avoid an unexpected charge.

Which cars are ULEZ compliant

Compliance is set by Euro emissions standard. Petrol cars must meet Euro 4, which generally means cars first registered from January 2006. Diesel cars must meet Euro 6, which generally means cars first registered from September 2015. Most newer cars comply, and many older petrol cars do too, but the registration date is only a guide. The only reliable way to answer "is my diesel car ULEZ compliant" is to check the specific vehicle, because some models registered around the changeover dates were built to the older standard. The same applies to petrol cars near the January 2006 line. A ULEZ compliant cars list based on dates will always be approximate; the TfL checker is exact. Motorcycles and mopeds are also covered and must meet the relevant standard to avoid the charge.

The daily charge and penalty

For most petrol and diesel cars that do not meet the standard, the ULEZ daily charge is £12.50 per day. The same £12.50 applies to non-compliant motorcycles and mopeds. The charge is per day, not per journey, so multiple trips into the zone on the same day attract one charge. Payment is due for each day the vehicle is driven within the zone. If the charge is not paid, TfL issues a Penalty Charge Notice of £180 for cars, reduced to £90 if paid within 14 days. Drivers who are unsure whether they need to pay should check before travelling rather than after, since the penalty is considerably higher than the daily charge. Owners who have recently changed vehicle may also want to check car tax status, as both records sit with the same registered keeper details.

Exempt vehicles and the Congestion Charge difference

Some vehicles are exempt from the ULEZ charge. These include electric vehicles (zero emission), historic vehicles over 40 years old that are not modified, vehicles in the disabled tax class, and certain military vehicles. An electric car is ULEZ exempt, though owners should note that electric car road tax rules changed in 2025, so the two costs are separate matters. Owners of older cars can read more about the historic vehicle exemption to see how the 40-year rule works. The ULEZ is not the same as the London Congestion Charge, which operates in a smaller central London zone and is charged separately. A vehicle can be ULEZ compliant and still owe the Congestion Charge, or vice versa, so both should be checked before driving into central London.

Frequently Asked Questions

How do I do a ULEZ check on a car I am thinking of buying?

Use the official TfL ULEZ vehicle checker at tfl.gov.uk/modes/driving/check-your-vehicle. Enter the registration number and confirm the vehicle details shown. The tool states whether the vehicle is ULEZ compliant and, if not, the daily charge that applies. The check is free, needs no account, takes under a minute, and works for any UK registration.

With the ULEZ rules explained, which cars are compliant?

Compliance is set by Euro emissions standard. Petrol cars must meet Euro 4, which generally means cars first registered from January 2006. Diesel cars must meet Euro 6, which generally means cars first registered from September 2015. Registration dates are only a guide, so the specific vehicle should be checked. Motorcycles and mopeds are also covered and must meet the relevant standard.

Which area does ULEZ cover?

ULEZ stands for Ultra Low Emission Zone and now covers all 33 London boroughs, meaning the whole of Greater London. The zone reached that size in August 2023, when it expanded from the earlier North and South Circular boundary. The boundary follows the Greater London Authority area rather than a ring road, so some drivers who previously sat outside the zone are now inside it.

What are the ULEZ operating hours?

The ULEZ operates 24 hours a day, seven days a week, every day of the year, including bank holidays. There are no quiet hours, no weekend exemption and no days off. A vehicle that does not meet the standard and is driven inside the zone on any day is liable for that day's charge.

How much is the ULEZ daily charge?

For most petrol and diesel cars that do not meet the standard, the ULEZ daily charge is £12.50 per day. The TfL checker shows the daily charge that applies if a vehicle is not compliant.

Why can two cars registered in the same year give different ULEZ results?

The result is based on the emissions standard the vehicle was built to, not its age alone. Some models registered around the changeover dates were built to the older standard, so a ULEZ compliant cars list based on dates will always be approximate. The TfL checker reads the vehicle's recorded emissions data and is exact.

Is a ULEZ check free, and can I run it more than once?

Yes. A ULEZ compliant check is free, needs no account, and can be repeated as often as needed. A buyer can run a ULEZ check UK-wide before viewing a car. For a broader picture of a used car, a free car check can be run alongside the ULEZ result.