Found this dated 04 March 2021:
https://www.which.co.uk/reviews/new-...d-aqnPf4D3c26Y
There's a table of "Tax Bands" with "CO2 emissions" & "Annual Rate" about 2/3rds of the way down the article.
So my CDT manual @ 163 g/km has a Tax Band Of "G" and Rate of £210 p/a from April 2021 (I think
).
Hope that helps.
PS. As far as I can see your auto should be more like £300 p/a ????