The following comes from the Vehicle Excise & Registration Act and takes no account of any possible changes from April 2009 either from Budget 2008 or Pre budget report from today
Your V5 registration document will give you the relevent CO2 figure
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<TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 196.5pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=262 colSpan=2>
CO<SUB>2</SUB> emissions figure
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 196.5pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=262 colSpan=2>
Rate
<TR style="mso-yfti-irow: 1">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=129>
(1)
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=131>
(2)
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=130>
(3)
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=130>
(4)
<TR style="mso-yfti-irow: 2">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=129>
Exceeding
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=131>
Not exceeding
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=130>
Reduced rate
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=130>
Standard rate
<TR style="mso-yfti-irow: 3">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=129>
g/km
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=131>
g/km
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=130>
£
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; : white; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black" vAlign=top width=130>
£
<TR style="mso-yfti-irow: 4">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=129>
100
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=131>
120
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
15
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
35
<TR style="mso-yfti-irow: 5">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=129>
120
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=131>
150
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
100
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
120
<TR style="mso-yfti-irow: 6">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=129>
150
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=131>
165
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
125
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
45
<TR style="mso-yfti-irow: 7">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=129>
165
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=131>
185
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
150
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
170
<TR style="mso-yfti-irow: 8">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=129>
185
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=131>
225
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
195
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
210
<TR style="mso-yfti-irow: 9; mso-yfti-lastrow: yes">
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=129>
225
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.9pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=131>
—
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
385
<TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: black; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 97.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black; : transparent" vAlign=top width=130>
400
The table has effect in relation to vehicles first registered before 23 March 2006 as if—
(a) in column (3), in the last row, “195� were substituted for “385�, and(b) in column (4), in the last row, “210� were substituted for “400�.�