I've just had my reminder come through for my tax disc:
£120 for 12 months
£66 for 6 months
When I bought my 2 (April last year) I knew that the tax for the first year would be £120, and would then drop to £90 the year after - this information was on the DVLA website last year.
So I checked their website again, and sure enough for my vehicle, emitting 129g CO2/Km I could expect to pay £90 for 12 months.
I then went through the online renewal process and was relieved to see I would indeed be charged £90.

So my question is, how did DVLA manage to get the figure so wrong on the renewal notice when they knew about the changes last year?
If I'd have renewed at the PO would I have paid £120?