Is it a vat 'fiddle'?
If a dealer sells to a subsidiary that claims the vat back and then leases out, they claim back £12k on an A8 class car and then the government makes the vat on the monthly payments instead at a relative trickle until the vehicle is no longer vat qualifying and is sold.
S8 for £480 a month?
http://www.hotukdeals.com/deals/audi...system-2252041