Bristol Clean Air Zone (Not a ULEZ): Charges & Check

Bristol's Clean Air Zone (Class D) — and why people call it a ULEZ

Bristol has no ULEZ and no congestion charge. What it has is a Clean Air Zone, and — unlike Bath's or Sheffield's — Bristol's version does charge non-compliant private cars, not just taxis and vans. If you searched "Bristol ULEZ check" or "Bristol ULEZ," this Clean Air Zone is the scheme you actually mean.

That distinction matters because it changes the answer. A non-compliant car costs money to drive into Bristol every single day the zone is live, which is worth knowing before you agree a price on a used car, not after. This guide is part of our wider guide to MOT, road tax and staying legal.

Class D means private cars pay, not just commercial vehicles

Clean Air Zones are graded by class, and the class decides who's charged. Classes A to C only charge commercial and larger vehicles — taxis, private hire vehicles, buses, coaches and HGVs. Class D adds ordinary private cars on top. Bristol and Birmingham are currently the only two English Clean Air Zones classed D, so they're the only two where a private car can be charged at all — a non-compliant car driven into Bath, Bradford, Sheffield, Portsmouth or Tyneside won't pick up a CAZ charge there. Our Birmingham CAZ D guide covers the other Class D zone, for anyone comparing the two.

For how Bristol's scheme compares with London's ULEZ and Scotland's Low Emission Zones, our wider guide to ULEZ and Clean Air Zones covers all of them side by side. If it's the phrase itself that brought you here — seeing "CAZ Class D exempt" on a sat-nav or a letter — our CAZ Class D exempt guide explains it in plain English.

The zone boundary

Bristol's Clean Air Zone covers much of the city centre and its main routes in. It's been running since 28 November 2022, and it operates 24 hours a day, every day of the year — there's no out-of-hours or weekend exemption to rely on.

How much Bristol's Clean Air Zone costs

£9 a day — non-compliant cars, taxis and vans

This charge sits on top of your road tax, not instead of it — see car tax bands explained for what VED itself costs a used-car buyer.

£100 a day — non-compliant coaches, buses and HGVs

Larger vehicles — coaches, buses and HGVs over 3.5 tonnes — pay £100 a day if they don't meet the standard.

Compliance standard

Whether you pay comes down to the car's actual emissions standard, not its age or badge: Euro 6 or newer for diesel, Euro 4 or newer for petrol, and electric or other zero-emission vehicles are exempt outright. Motorcycles and mopeds are exempt by vehicle type, regardless of emissions standard.

Charges run to the calendar day, not a 24-hour window from when you cross the boundary

The charge applies midnight to midnight, so if you drive into the zone late one evening and out again after midnight, that's two separate days and two separate charges — not one continuous 24-hour pass. You don't have to pay on the day you travel either way: payment is accepted up to 6 days before or up to 6 days after you drive into the zone.

Which cars are exempt from Bristol's CAZ charge

National exemptions

A set of vehicle types are nationally exempt from every English Clean Air Zone, regardless of emissions standard: vehicles registered in the disabled passenger tax class, historic vehicles, military vehicles, and vehicles retrofitted with technology accredited under the Clean Vehicle Retrofit Accreditation Scheme (CVRAS).

Local exemptions

Bristol also runs its own local exemptions on top of the national ones: specialist vehicle tax classes used by the emergency services, an exemption for hospital patients and visitors, and an exemption for Blue Badge holders. The council also operates a financial assistance scheme for people who need support to replace a non-compliant vehicle or cover the charge — the eligibility criteria and amounts sit with the council rather than being fixed figures we can state here, so check your specific circumstances against Bristol City Council's current exemptions page rather than assuming from another city's scheme.

How to check if a car you're buying will be charged

Check the exact registration before you view the car, not after you've agreed a price on it — a car that looks fine on paper can still turn out to be a non-compliant diesel that costs £9 every time it's driven into the city centre.

Run the reg through our Bristol Clean Air Zone check — it tells you whether that specific car is liable for Bristol's charge, alongside the rest of our free vehicle information. If you might also drive the car somewhere covered by London's ULEZ, run our ULEZ check alongside it for a wider picture.

It's also worth running an MOT check on the same registration — a car that isn't currently taxed or MOT'd is a separate problem from CAZ compliance, but the two often turn up together on a neglected car.

What happens if you don't pay

Miss the payment window and you'll get a Penalty Charge Notice of £120, reduced to £60 plus the CAZ charge itself if you pay within 14 days.

If you think the PCN was issued wrongly — the car was exempt, or you did pay but it wasn't recorded — you can make representations to the council within 28 days of the notice. If that's rejected, you have a further right of appeal to the independent Traffic Penalty Tribunal. This is general guidance, not legal advice for your specific case; the Tribunal's own site sets out the grounds of appeal and the current process in full.

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