Here at HonestJohn.co.uk we do not have any crystal balls to predict the future. However, if I had to make an educated guess, I'd say Euro6 diesel engines (like the one found in the Grand California) will be allowed to go about their business as normal.

We all know how Governments like to change their minds on motoring matters - it wasn't that long ago we were all being encouraged to buy a diesel. Therefore it's possible you may be asked to pay a daily fee to drive a diesel car into certain major cities or towns as EVs become the new norm. But I do not think you'll be prevented from driving your motorhome around the UK or continental Europe after 2030.