The Crossfire dosen't have a spare wheel at all just a compressor and a can of puncture repair.
As for cam belts it has chains so no worry about changing them for a long time.
They can be expensive to service as it uses fully synthetic oil (8 Litres) it has 12 spark plugs 2 per cylinder and the fuel filters, air filters etc are also expensive.
However you only change the plugs once every five years along with the coolant and I think that the air and fuel filters get done every four years.
Tyres are also expensive but if you shop around you can get them cheap enough and they last fairly well.
As for MPG I get around 23 MPG and have had worse but if your doing motorway driving I would expect high 20's.
The thing is you can buy them so cheap now so the money you save will make up for running costs.
Nearly forgot I would buy an auto over a manual as the manual boxes aren't very good.

Just buy one I'm sure you wont regret it.


Norrie.