BHP per tonne -
BMW Mini Cooper S - 1210kg seems to be the weight.
1210 / 1000 = 1.21 tonnes
180bhp / 1.21 tonnes - 148.76BHP/Tonne
No standard MINI has 180 bhp.
As said, it will depend on what sort of "race you want" as a Mini might be initially be quicker off the line as already said but eventually power will take over. Gearing will also have a massive factor too. Our Spi ( slightly modded ) is quite nippy and isnt that much slower off the line than my MINI but once its wound up, the newer car leave it standing........