Ask Honest John

Most recently answered clean air zones questions
I was reading a few days ago that even though old petrol and diesel vehicles will be on roads after 2030, some councils may impose restrictions for such vehicles entering cities. Have you heard anyhing...
A friend received a penalty charge notice of £100 for non-payment of a ULEZ charge despite selling their car over a year ago and TfL say they are still liable because the account is still in their name....
I have 2012 Land Rover Freelander. It's showing as ULEZ compliant with TfL. However according to my CoC he Nox is 150 mgs/k. Also the PM is shown as 1.25 mgs/k and the Co2 as 120 mgs/k. Can you explain...
I am looking to buy an older small petrol vehicle that is in Euro Emission Category 4, currently CAZ compliant. Is there any chance they may change the limits and make the older cars in Emission zone 4...
I have seen that Euro 7 is programmed for 1st July 2025. The requirements for this are greatly beyond Euro 6. Is this definitely the future for the UK or is this just Europe? I see that the City of Oxford...
I'm replacing a Skoda Octavia, preferably with another Skoda Octavia or similar. My budget is £10k. I'm thinking I should try and get a Euro 6, but there aren't that many in my price range, so I'm sort...
Should I buy a Euro 5-compliant car if I am going to keep it for at least 10 years? Or will I not be able to go into most cities in coming years due to clean air zones.
My 2014 2.0-litre diesel auto BMW 5 Series falls foul of the clean air zone (CAZ) requirements. It's been my third 5 Series, used for my work as a surveyor. The rear seats fold to accommodate my ladders...
I have a 1999 Peugeot 406 diesel estate. It has 160k miles on the clock and I bought it for £2000 12 years ago. The expansion of the London ULEZ means that I have to change it, I really don't want to,...
I’m going to buy a 2016 Nissan Navara. How much it would cost for me to upgrade it for the London ULEZ?