Guides › Parking Fines › Clean Air Zone Fine: How to Challenge It
Clean Air Zone Fine: How to Challenge It
For Clean Air Zones outside London, such as Bristol, the penalty is sent by post. The Traffic Penalty Tribunal says you can pay at 50% within 14 days, or make representations within 28 days. If the council rejects them, you have 28 days to pay or appeal to the Tribunal, which is free.
At a Glance
Your Rights
What the rules say, with a link to the official source for each.
Challenging a CAZ Penalty
Penalty and Discount
Using Bristol as the example: a PCN for £120 plus the daily CAZ charge is posted to the vehicle owner. You can pay at the discounted rate of 50% of the penalty plus the CAZ charge within 14 days of the PCN issue date. source
Representations and Appeal
Make representations as soon as possible, within 28 days of the PCN being delivered. If they fail, you get a Notice of Rejection, which can take up to 56 days. You then have 28 days to pay or appeal to the Tribunal. Specific grounds must apply for an appeal to succeed. A Charge Certificate increases the PCN by 50%. source
Council Penalties
Challenging a Council Ticket
Council PCN (England outside London and Wales): make representations to the council within 28 days; if rejected you get a Notice of Rejection and have 28 days to appeal to the Traffic Penalty Tribunal, which is free and mostly online. You can only appeal to the tribunal after making representations to the council. source
The 50% Discount
Council PCNs are normally reduced by 50% if paid within the discount period (14 days; some PCN types 21), and the discount is usually kept open while representations are pending. source
Time Limits to Know
Miss a deadline and you can lose a right. Check the dates on your own paperwork.
- 14 daysPay a CAZ penalty at 50%From the PCN issue date
- 28 daysMake representationsFrom the PCN being delivered
- 28 daysAppeal to Traffic Penalty Tribunal after Notice of Rejection28 days from the Notice of Rejection
Steps to Take
Step 1 of 5
Check the vehicle, date, time and location on the PCN.
Step 2 of 5
Check whether your vehicle should have been exempt, or whether you paid the daily charge.
Step 3 of 5
Make representations to the council within 28 days, with your evidence.
Step 4 of 5
If rejected, appeal to the Traffic Penalty Tribunal within 28 days. It is free.
Step 5 of 5
Do not ignore the PCN: a Charge Certificate adds 50%.
(Tap the numbers to reveal steps)
Where to Go If It Is Not Put Right
Your options, in order, and when each one applies.
Traffic Penalty Tribunal
After the council rejects your representations. Free, and mostly online.
The Council
Make representations first, within 28 days.
Good to Know
Small things that make your complaint stronger.
Amounts and exemptions vary between Clean Air Zones, so check the council's own page for your zone.
Want Help?
If you would like one of our team to look at your problem, our initial case review is free. We cannot guarantee any outcome and we do not give legal advice.
Lead reviewer
Luke Marley
Founder and Lead Reviewer
Luke founded CPUK in 2026 after seeing how hard it is for ordinary people to get problems with companies put right. He oversees our guides and checks them against official sources.
Research by Katie Burt, Co-founder and Operations Lead (17 years in the care sector, including managing services for vulnerable adults), and the CPUK Research Team. Researched with AI-assisted research tools, then checked and corrected by our team.
Last checked: 13 October 2026. We are not paid by the companies we write about. Adverts never affect our guidance. Read our editorial policy.
Sources and official links
- tpt.gov.uk/appeals-process-bristol-clean-air-zone Checked 13 October 2026
- tpt.gov.uk/how-to-appeal Checked 12 October 2026
- tpt.gov.uk Checked 12 October 2026