The tax laws are a bit daft especially as they are done for "eco-reasons", do not fit all situations and are somewhat unfair.
Some cars are charged more for being pre 1st March 2001 registered, than on the post March 2001 CO2 system simply because the lowest band is up to 1549cc band; £125 and many efficient small cars emit less than 150g/km, which would be the new £115pa band.
Off the top of my head, an example is the Perodua Nippa 850GX, at 129g/km would be £125 if registered before 1st March 2001 and £80 if after. Same car, £45 more tax.
It also pushes people to buy older, less efficient versions of certain cars to avoid punitive tax-Land Rover Defenders are sought after for being pre 1972 (free) pre-March 2001 (£205) or most importantly pre March 23rd March 2006 (£235) after this the band jumps up to a huge £415.
The Omega is taxed as pre 1st March 2001 being £205 and after being £235 (DTI £225). The 2006 jump does not apply as the tax is limited to band K for registrations before 23rd March 2006.
My recent cars (not Omega) have all been £20-110pa to tax and with 50-65mpg, there is a huge difference in day to day costs compared. The government is pushing us very hard towards less CO2 cars and we could not afford to battle the fuel and road tax any more on a tight budget.
Sadly, it is cheaper to buy a new Euro-hatch on £100pcm finance, offset this against tax, fuel, MOT, repair, maintenance and insurance costs than it is to run an older thirstier car now. The depreciation is minimal due to small car demand on the scondhand market, too.
I have had 90 cars and tried to run an Omega on a budget as a family car, but had to return to a small modern hatch as, put simply; we ran two small hatches for less than one Omega (not counting my repairs).
This is what the government wants us to do. I miss the luxury of the Omega and also the boot space
On the plus side, it does keep Omega prices low for enthusiasts
If you work out how much tax you pay every month, taking into account income tax, NI, fuel duty, road tax, insurance premium tax, VAT, tax tax, whatever tax it does come to most of your income