The challenge is to make the most expensive car possible: not as an overall price tag, but as a percentage of its starting price. In other words, can you double a car's original price on options alone?
Our best effort? A mark-up of 102 per cent on the Mini One, including a spectacular - and unnecessary - set of 17-inch alloys at £1,605. But we reckon you can do better. Below are five of our best efforts, with links to the configurators, but there are more out there. Many more.
The only rule is that once you've chosen your start car, you can't change the engine: no claiming you've specced a BMW 318i over £50,000 when you've actually changed it into an M3.
Use the comment-devices below to show us your finest work, and be warned: successful speccing is a more complex science than it might first appear to be. Happy configuratorising!
Mini One: 102 per cent mark-up
Start price: £12,620
End price: £25,550
Mini's configurator http://mini.co.uk/html/ecom/ecom.html
Audi A1 1.6D: 94 per cent mark-up
Start price: £13,545
End price: £26,295
Audi's configurator http://ak4-uk.audi.co.uk/entry
Mercedes A160: 89 per cent mark-up
Start price: £14,090
End price: £26,600
Merc's configurator http://www2.mercedes-benz.co.uk/content/unitedkingdom/mpc/mpc_unitedkingdom_website/en/home_mpc/passengercars/home/new_cars/models/a-class/w169/configurator.html
BMW 116i: 83 per cent mark-up
Start price: £17,610
End price: £32,145
BMW's configurator http://www.bmw.co.uk/bmwuk/ecom4/frameset/0,,1156___bs-MQ%3D%3D%40bb-S08%3D%40sit-bmwuk,00.html
Fiat 500 1.2: 70 per cent mark-up
Start price: 9,265
End price: £15,725
Fiat's configurator http://www.fiat.co.uk/showroom/?id=10023#showroom/new_500/configurator
