A friend at works Dad has one of these, he has brought it into work a couple of times...
Asked him about running costs and he said round town it does 10-12mpg, maybe low 20's on a long run
Yearly standard service is £1,000 - £1,2000 and the 2 yearly big service is over £3k, this year his Dads need cambelt and few other bits done and the estimate is around £4,500.
His has the 20" wheels which look but the tyres are around £450 from what he said...
The car has been back to the dealer about a dozen times in 2 years, various different things, electrical engine management etc...
I am sure you can save on these costs by servicing yourself or buying cheaper consumables but would you want to?
The car sounds absolutely fantastic