I think the VED on some Roadsters is also a problem. The VED regime changed at various times so some Roadster are as much as £735 a year VED:

https://www.parkers.co.uk/morgan/roadster/roadster-2004/car-tax/

My 2018 Roadster is only £195.


Roadster 3.7
Plus 4 110 Anniversary
Plus 4 Fiat TC