ULEZ and Clean Air Zones explained
Many UK cities now charge older, more-polluting vehicles to drive in certain areas. London's Ultra Low Emission Zone (ULEZ) is the largest, but England has several Clean Air Zones and Scotland has Low Emission Zones. Whether you pay depends on your engine's Euro emissions standard.
It's all about Euro standards
Compliance is based on the Euro emissions standard your vehicle meets, which broadly tracks its age:
- Petrol: Euro 4 or newer (roughly 2006 onwards) is compliant.
- Diesel: Euro 6 or newer (roughly September 2015 onwards) is compliant.
- Electric & hydrogen: always compliant.
- Motorcycles: Euro 3 or newer.
The ULEZ charge
London's ULEZ covers all London boroughs. Non-compliant cars, vans and motorcycles pay £12.50 a day, every day, to drive within it. The charge runs alongside the separate Congestion Charge in central London, so older cars can pay both.
Clean Air Zones and LEZs
Outside London, several English cities run Clean Air Zones (CAZ). Crucially, many, Sheffield, Tyneside, Bath, Bradford, Portsmouth, are "class B/C" zones that don't charge private cars, only vans, taxis, buses and lorries. Birmingham and Bristol do charge non-compliant cars. Scotland's four Low Emission Zones (Glasgow, Edinburgh, Dundee, Aberdeen) ban non-compliant vehicles outright rather than charging.
Always check by reg plate
A 2010 petrol car
A petrol car first registered in 2010 meets Euro 5, which is comfortably above the Euro 4 ULEZ threshold, so it's compliant in London ULEZ and the charging CAZs, with no daily fee. A 2010 diesel, by contrast, would likely be Euro 5 and fall short of the Euro 6 diesel requirement, facing the £12.50 charge.
Common Clean Air Zone mistakes
- Assuming all CAZs charge cars. Several English zones only charge vans, taxis and lorries, not private cars.
- Confusing ULEZ with the Congestion Charge. They are separate London charges; an older car in central London can pay both.
- Guessing from the car's age. Diesels in particular need to be Euro 6 (≈2015+); always verify by reg plate.
- Forgetting it runs every day. The £12.50 ULEZ charge applies daily, including weekends, with limited exemptions.