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Explainer

ULEZ vs Congestion Charge vs Clean Air Zones: what’s the difference?

Three types of UK road charge are easy to confuse. They have different rules, different hours and different payment windows — and in central London you can owe two at once.

The ULEZ and Clean Air Zones charge only older, more polluting vehicles. The Congestion Charge charges almost every vehicle in central London during set hours, however clean.

Updated 25 September 2026 · By the EveryDrive team

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Zone entry detected

AB12 CDE just entered Bristol Clean Air Zone — a charge may apply.

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London ULEZCongestion ChargeClean Air Zones
WhereAll of Greater LondonCentral LondonBirmingham, Bristol, Bath, Bradford, Sheffield, Newcastle, Portsmouth
Who paysNon-compliant vehiclesAlmost every vehicleNon-compliant vehicles of the types the zone charges
Hours24/7 (not Christmas Day)7am–6pm weekdays, 12pm–6pm weekends/bank holidays (none 25 Dec–1 Jan)24/7
Car charge£12.50/day£18/day (£21 if paid later)£8 Birmingham, £9 Bristol; others don’t charge cars
Pay byMidnight, 3rd day afterMidnight, 3rd day after6 days after
Pay atTfLTfLGOV.UK

Can I pay both the ULEZ and the Congestion Charge?

Yes — and if your vehicle is non-compliant and you drive in central London during Congestion Charge hours, you must. They’re separate charges paid separately (though both through TfL).

Emissions charges vs congestion charges

The ULEZ and Clean Air Zones exist to cut pollution, so they only charge vehicles below an emissions standard — broadly Euro 4 petrol and Euro 6 diesel. The Congestion Charge exists to cut traffic, so a brand-new electric car still pays (with a 25% discount via Auto Pay since 2026).

Scotland’s Low Emission Zones are different again

Glasgow, Edinburgh, Aberdeen and Dundee don’t let you pay to enter. Non-compliant vehicles simply aren’t allowed in, and are fined if they do.

Keeping track of all of them

Each scheme has its own deadline and payment site, which is exactly what EveryDrive is built for: it detects which zone you entered, tells you whether your vehicle is charged, and reminds you before that scheme’s deadline.

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Never miss a charge deadline again

EveryDrive notices when you drive into a charging zone or through a toll crossing, even with the app closed, tells you whether your vehicle is charged, and reminds you before the payment deadline.

EveryDrivenow

Zone entry detected

AB12 CDE just entered Bristol Clean Air Zone — a charge may apply.

EveryDrive9:00 am

Unpaid Clean Air Zone charge

AB12 CDE at Bristol Clean Air Zone, yesterday, is still unpaid.

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It never takes payment: you pay the official operator yourself. Installs through Apple’s TestFlight app.

Frequently asked questions

Is the ULEZ the same as the Congestion Charge?

No. The ULEZ charges polluting vehicles across all of London 24/7. The Congestion Charge charges almost all vehicles in central London during set hours.

Do I pay ULEZ and Congestion Charge together?

If your vehicle isn’t ULEZ compliant and you drive in central London during Congestion Charge hours, you pay both.

Is a Clean Air Zone the same as the ULEZ?

They work the same way, but Clean Air Zones are run by councils outside London, use GOV.UK for payment, and many don’t charge private cars.

This guide is general information, not legal advice. Charges and rules can change — always check the official scheme website. EveryDrive is not affiliated with TfL or any local authority.