What is the ULEZ?
The Ultra Low Emission Zone (ULEZ) is a charge area in London that operates 24 hours a day, 7 days a week. Vehicles that do not meet the required Euro 6 emission standard for petrol or Euro 6d for diesel must pay a daily charge to drive within the zone.
How to check your car’s ULEZ status
The quickest way to find out if your car is ULEZ‑compliant is to use the official Transport for London (TfL) online checker. Simply enter the vehicle’s registration number and the system will instantly tell you whether a charge applies.
If you prefer not to use the TfL site, you can also verify compliance through a few other reliable methods:
- DVLA vehicle data – The DVLA keeps emission class information on the V5C registration certificate. Look for the “Euro emission standard” entry.
- Manufacturer’s website – Most makers publish the Euro standard for each model and year.
- Motorpeek.com – Our vehicle history check includes a ULEZ compliance flag based on the registration number.
Step‑by‑step guide using the TfL checker
1. Gather your registration number
You will need the exact number as it appears on your V5C (e.g., AB12 CDE). Double‑check for any typos – an incorrect entry will return an “unknown” result.
2. Visit the TfL ULEZ checker
Go to tfl.gov.uk/ulez‑checker. The page is free and does not require registration.
3. Enter the details
Type the registration number into the box and click “Check”. Within seconds the system will display one of three outcomes:
- Compliant – No charge: Your vehicle meets the Euro 6 (petrol) or Euro 6d (diesel) standard.
- Non‑compliant – Charge applies: The vehicle falls below the required standard and will be subject to the daily ULEZ fee.
- Data not available: The registration is not in the TfL database; you may need to consult the V5C or contact the manufacturer.
Using DVLA information
The V5C registration certificate includes a section titled “Vehicle emission standard”. If it reads “Euro 6” (or higher) for petrol, or “Euro 6d” for diesel, the car is automatically ULEZ‑compliant. This information is also available on the DVLA’s online vehicle enquiry service, which can be accessed with a modest fee.
Why a vehicle history check helps
When you buy a used car, you often receive only the registration number and mileage. A comprehensive history check from motorpeek.com not only reveals outstanding finance, mileage discrepancies, or previous keepers, but also flags ULEZ compliance based on the latest TfL data. This saves you a separate lookup and gives you peace of mind before you drive into central London.
Remember, we are not an official government source, but we pull the same public data that TfL uses, so our compliance indicator is reliable.
What to do if your car is not compliant
If the checker shows that your vehicle will be charged, you have a few options:
- Consider a retrofit such as a particulate filter for diesel engines – some retrofits are recognised by TfL.
- Plan routes that avoid the ULEZ area, especially for occasional trips.
- Upgrade to a newer, compliant model if you drive in London frequently.
Keep a record of the compliance result – you may need it for insurance or resale discussions.
Final tip
Before you finalise any used‑car purchase, run a quick registration check on motorpeek.com. It will confirm ULEZ status, reveal any hidden finance, and give you a full picture of the vehicle’s history.
Frequently asked questions
Do I need to check ULEZ compliance for a diesel car that is older than 2015?
Yes, diesel cars built before September 2015 are generally non‑compliant and will attract the charge unless they have a recognised retrofit.
Can I use the same check for the Low Emission Zone (LEZ)?
No, the LEZ covers a larger area and uses different emission standards; you need to use the separate LEZ checker on the TfL website.
Will a vehicle history check from motorpeek.com show if my car has been written‑off for ULEZ reasons?
Motorpeek.com flags ULEZ compliance but does not list ULEZ‑related write‑offs; however it will reveal any insurance write‑offs (Cat A, B, S, N) that affect road legality.