London's clean air rules arrived in layers, and the result is a set of overlapping zones with different vehicles, different daily charges and rules that don't quite line up with each other. If you drive a diesel van into the city for work, or you're borrowing a car for a weekend trip, it pays to know exactly what you owe and when.
Here's how the Low Emission Zone and the Ultra Low Emission Zone actually work, who pays, and where people trip up.
Two zones, two different jobs
The Low Emission Zone (LEZ) is the older scheme. It targets heavier vehicles — vans and minibuses above 1.5 tonnes, plus HGVs, buses and coaches. It has covered most of Greater London since 2008 and operates around the clock, every day of the year.
The Ultra Low Emission Zone (ULEZ) came later and is aimed at the vehicles most people actually drive: cars, motorcycles, smaller vans and minibuses. Since 29 August 2023 it has covered every London borough out to the Greater London boundary. It also runs 24 hours a day, every day except Christmas Day.
Neither zone has barriers, booths or anyone to hand cash to. Cameras read number plates automatically, and if your vehicle doesn't meet the required standard, a daily charge lands with the registered keeper.
What you pay, by vehicle type
Charges are per vehicle, per day. Drive in and out of the zone five times in one day and you pay once.
- Cars, motorcycles, small vans, minibuses and specialist vehicles that don't meet ULEZ standards: £12.50 a day.
- HGVs, buses and coaches over 3.5 tonnes that don't meet ULEZ standards: £100 a day.
- Larger vans and minibuses (1.5–3.5 tonnes) and similar vehicles that don't meet LEZ standards: £100 a day.
- HGVs, buses and coaches over 3.5 tonnes that don't meet LEZ standards: £300 a day.
Vans and minibuses sit in the overlap between the two schemes, and the detail there is fiddly. Rather than guess from a vehicle's age or fuel type, put the number plate into TfL's online vehicle checker. It will tell you which charges apply to that specific vehicle — and whether you'd be paying one of them or both.
Is your vehicle compliant?
Compliance is set by European emissions standards, not by how clean a car feels or how recently it was serviced. As a rough guide:
- Petrol cars and vans: Euro 4 or newer — broadly, cars first registered from January 2006.
- Diesel cars and vans: Euro 6 — broadly, cars first registered from September 2015.
- Motorcycles: Euro 3 — broadly, from July 2007.
- HGVs, buses and coaches: Euro VI.
A petrol car from 2008 is almost certainly fine. A diesel from 2013 usually isn't. The word "broadly" is doing real work here — some models ran ahead of the deadlines, some behind. Your V5C or the TfL checker settles it in a minute.
Exemptions, and the ones people assume exist
There are genuine exemptions, and they are narrow:
- Vehicles more than 40 years old that are registered in the historic tax class.
- Certain military vehicles, agricultural machinery and specialist machines.
- Some vehicles with a disabled tax class and some wheelchair-accessible vehicles, for which TfL lists specific exemptions and time-limited grace periods.
Non-UK registered vehicles are not exempt. Neither is a car you only drove three miles in. Distance doesn't enter into it at all.
There is also no residents' discount for ULEZ — unlike the Congestion Charge, which does give local residents a substantial reduction. Living inside the zone doesn't change what you pay.
Parking is a different matter. If you keep a non-compliant car inside the zone and don't drive it, there's nothing to pay. The charge follows driving within the zone, not owning a vehicle there.
TfL has run scrappage and retrofit support schemes at various points. Several have closed to new applications, so check the current position before you budget for help.
Paying, and what happens if you forget
You can pay in advance, or by midnight on the third day after you travel. If you drive in regularly, set up Auto Pay: it takes the charge automatically and removes the risk of a missed payment. Otherwise use the TfL website or app.
Miss the window and a penalty charge notice goes to the registered keeper. That's whoever the vehicle is registered to, not necessarily whoever was driving. If you lent the car to someone, the notice still lands on your doormat — a conversation to have privately rather than with TfL.
The Congestion Charge is a separate bill
The Congestion Charge is not an emissions charge and it isn't covered by your ULEZ payment. It applies in central London between 7am and 6pm on weekdays, and noon to 6pm at weekends and on bank holidays, at £15 a day.
A non-compliant car driven through central London on a weekday morning can therefore owe ULEZ and the Congestion Charge on the same day. Add tolls such as the Dartford Crossing and the Blackwall and Silvertown tunnels, and a single trip can carry several separate charges, each with its own deadline. Budgeting for one and forgetting the rest is the most common expensive mistake.
A five-minute check before your next drive in
- Put your number plate into TfL's vehicle checker and note which zones it flags.
- If the result surprises you, check the V5C or the Euro emissions standard rather than the registration year alone.
- Set up Auto Pay if you drive in more than occasionally — it can cover both ULEZ and the Congestion Charge.
- Note the deadline: midnight on the third day after travel.
- If you're hiring or borrowing a vehicle, agree in writing who pays any charge. The notice follows the keeper, not the driver.
None of this is hard once you know your vehicle's status, and the checker takes less time than reading this piece. Charges and grace periods do change, and this is general information rather than legal or financial advice — confirm the current rules on TfL's website before you travel, particularly if you're relying on a scrappage scheme or an exemption.
Photo: Giannino Nalin / Pexels
