ULEZ Checker: How to Check If Your Car Is Compliant in London

ULEZ checker: How Do I Check If My Car Is ULEZ Compliant in London?

A ulez checker takes moments. uk/check-vehicle tells you instantly whether your car meets Ultra Low Emission Zone standards by entering your registration number.

The tool is free, gives a yes-or-no answer in seconds, and checks against the same DVLA database that cameras use to issue charges.

Key facts

What is the ULEZ checker and why does it matter?

The ULEZ checker is Transport for London's free online tool that cross-references your vehicle registration with DVLA emissions records to confirm whether your car meets Euro 4 (petrol) or Euro 6 (diesel) standards.

50 charge every single day, whether you drive one mile or fifty, and cameras enforce the zone 24 hours a day with no physical checkpoint to warn you.

The zone expanded in August 2023 to cover all London boroughs, so a car parked overnight in Bexley or Hillingdon is inside the charging area the moment it moves. Payment is due by midnight the following day; miss the deadline and the charge rises to £180, reduced to £90 if paid within 14 days.

Warning: the checker shows current compliance only—it does not predict future standards or tell you whether a planned journey will cost money.

How accurate is the TfL vehicle checker?

The TfL checker pulls data directly from the DVLA vehicle database, the same source that enforcement cameras use to issue charges, so its yes-or-no answer matches what you will be billed for. 50 for every day the vehicle moves inside Greater London.

The tool cannot account for modifications made after registration—retrofitting a diesel particulate filter or reprogramming an engine does not update DVLA records automatically, so the checker will still show the original emissions class.

To change your vehicle's status you must apply to TfL for a compliance certificate, providing evidence of the work and an updated MOT emissions test result.

Tip: check every vehicle you drive, including hire cars and borrowed vehicles—the registered keeper receives the charge notice, but the driver is liable if you are not the owner.

Rare errors occur when DVLA records are incomplete or a vehicle has been imported and never fully registered, in which case the checker returns "unable to determine" and you should contact TfL directly before driving into the zone.

What happens if my car is not ULEZ compliant?

50 for each day you drive it anywhere inside Greater London, charged midnight to midnight regardless of journey length or time of day. Uk or by phone, due by midnight the day after travel.

The charge is per vehicle per day, so two non-compliant cars driven on the same day cost £25 total.

There is no grace period, no warning sign at the boundary, and no option to pay at a booth—cameras read every number plate automatically and the system sends a penalty notice to the registered keeper if no payment is logged within 24 hours.

The penalty is £180, reduced to £90 if paid within two weeks, and enforcement is consistent across all 32 boroughs and every access road.

You can register for Auto Pay, which charges your card automatically each time cameras detect your vehicle in the zone, removing the risk of a missed deadline. 50; Auto Pay simply automates the transaction.

8 million ULEZ penalty notices in the first year after the zone expanded to Greater London.

Some drivers qualify for temporary exemptions—disabled tax-class vehicles, showman's vehicles and certain specialist cars receive automatic grace periods—but the checker does not show exemption status, so you must apply separately through TfL if you believe you qualify.

Can I avoid the ULEZ charge without changing my car?

You avoid the charge by keeping a non-compliant vehicle outside the Greater London boundary at all times, which means parking it beyond the M25 and never driving it into any London borough, even for a single journey. 50 applies.

Public transport, car-sharing or hiring a compliant vehicle for London journeys are the only ways to avoid the charge if you live inside the zone and own a non-compliant car.

Scrapping the vehicle through the TfL scrappage scheme, if you qualify, offers a £2,000 grant toward a compliant replacement or public transport credit, but the scheme has eligibility criteria and limited funding.

Some drivers register a compliant second vehicle for London use and keep an older car for journeys outside the M25, but running two cars has its own costs—insurance, tax and servicing typically exceed the annual ULEZ charge unless daily London travel is frequent.

50 applies for that calendar day.

How does the ULEZ checker compare to an MOT checker?

The ULEZ checker answers one question only—whether your vehicle meets London's emissions standards—while an MOT checker shows test history, expiry date, recorded mileage and advisory notes from every test since 2005.

Both tools are free, both use DVLA data, and both require only your registration number, but they serve completely different purposes and neither replaces the other.

50 per day to drive it in London. A car can pass its MOT and still fail ULEZ standards—emissions limits for roadworthiness are lower than the standards required to avoid the charge.

You need both checks if you are buying a used car for London use: the MOT history confirms the vehicle is maintained and road-legal, while the ULEZ checker confirms you will not face a daily charge.

Many drivers check MOT history first to verify mileage and service records, then run the ULEZ check to confirm running costs.

Tip: run both checks before test-driving a used car—finding out it is non-compliant after you have agreed a price puts you in a weak negotiating position.

uk/check-vehicle-tax](/blog/is-my-car-taxed-check-vehicle-tax-status), is a third separate check—ULEZ compliance does not exempt you from road tax, and an untaxed compliant car is still illegal to drive even if it incurs no ULEZ charge.

Why a mobile valet suits drivers inside the ULEZ zone

Once your car is inside the charging zone, every optional trip has a price on it. 50 to the cost of a clean, even if the bay is two miles away, because the charge applies for the entire calendar day regardless of journey length.

That makes a mobile valet the cheaper option for non-compliant cars parked at home—there is no extra journey, no fuel cost and no additional ULEZ charge triggered by a trip you would not otherwise make.

Mobile valets work across all London postcodes, including permit-only streets, underground car parks and blocks of flats with allocated bays, and a valet who comes into the zone charges a fixed rate from £75 with no travel fee. 50 in favour of staying put.

For compliant vehicles, the case is convenience rather than cost—no queuing, no driving in January rain, no explaining access codes or parking restrictions to a forecourt attendant.

Valets work around school runs, work-from-home schedules and permit timings, and bring commercial-grade equipment including their own water supply where no outside tap is available.

Valetly connects drivers across Greater London and the M25 commuter belt with vetted, insured independent mobile valets. Every valet is ID-checked, carries public liability insurance of at least £1 million, and completes a free re-clean if any part of the job is missed.

You book online or in the app, see before-and-after photos on every job, and pay the price shown at checkout with no hidden fees. Check whether your car is liable for the ULEZ charge using the free ULEZ checker tool, then decide whether a mobile clean makes sense for your routine.

Frequently asked questions

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Check once when you first use the vehicle in London, then again only if you modify the engine, fit emissions equipment or import a car from abroad.

ULEZ standards are fixed—Euro 4 for petrol, Euro 6 for diesel—so a car that is compliant today stays compliant unless TfL changes the rules, and a non-compliant car cannot become compliant without physical modification and a TfL compliance certificate.

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Yes, the TfL checker accepts any vehicle registration, including motorcycles, vans, motorhomes and lorries. Motorcycles must meet Euro 3 standards to avoid the charge; vans and lorries follow the same Euro 6 diesel or Euro 4 petrol rules as cars.

50 daily rate applies to all vehicle types except buses and coaches over 5 tonnes, which pay £100 per day.

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Appeal immediately through the TfL website, providing the checker result as evidence. Errors are rare but occur when DVLA records are updated after a charge is issued, or when a vehicle has been wrongly classified at registration.

TfL cancels penalties where the checker confirms compliance on the date of travel, but you must appeal within 28 days of the notice.

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No, the checker requires your exact registration to cross-reference DVLA emissions data. Generic guidance—petrol cars registered after 2006, diesels after September 2015—applies to most vehicles, but individual cars vary, so only the registration-specific check gives a definitive answer.

There is no public API or bulk-check tool; you must enter each vehicle separately.

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Fully electric cars are always exempt because they produce zero tailpipe emissions.

Plug-in hybrids and self-charging hybrids are exempt if they meet Euro 6 diesel or Euro 4 petrol standards, which most models registered after 2016 do, but you must check each vehicle individually because age alone does not guarantee compliance.

Check before you drive, then keep the car clean without adding miles

uk/check-vehicle gives you a yes-or-no answer in seconds and uses the same DVLA data that enforcement cameras rely on, so the result you see is the charge you will pay. 50 daily charge applies automatically with no warning and no grace period.

If your car is non-compliant and parked inside the zone, every trip to a wash bay triggers the full daily charge even if you drive one mile, making a mobile valet the simpler and often cheaper choice.

Book a valet who comes into the zone and avoid the extra journey entirely, or check the areas we cover to confirm availability at your postcode.

Valetly is a London mobile valeting marketplace (company number 17255496) connecting vetted, insured independent valets with drivers across all 32 London boroughs, with fixed prices from £75.