Assuming the car is registered in March 2007; you would get 60 months depreciation (1% allowed per month).
Hence assuming list price of of £23k (void of VAT)
23000 x 0.6 = 13800 max depreciation.
as car is greater than 1800cc apply 100%
9200 x 1.00 = 9200 - duty value
then £9200 plus all taxes + shipping/clearance cost (£2000 approx)
= ((9200+2000 x 1.17) x 1.05) x 1.01
= £13900
as car is greater than 1800cc apply 50% regulatory duty
= 13900 x 1.5
= £20850
plus cost of used car - assuming £15500
Total landed in Pak = £36350 (about 5.1 million rupees)