Minor service every 12,000 miles. If you do less than this per year, then every 2 years you must perform a service and change the oil filter.
People on low mileages seem to perform annual servicing anyway.
Major service every 24,000 miles. If you do less than this, then every 4 years you must perform a major service.
12,000 mile services are about £300-350 at an OPC I think.
24,000 mile services are about £700 at an OPC I guess.
You can get the servicing at about 60% of this, if you use an independent.
The polyrib belt has to be changed every 48,000 miles. (Don't know what this costs.) Note that this is not the timing chains (which would require taking the engine apart), this must be the external belt that drives all the ancilliaries such as steering pump, air-con, etc.
Also every 48,000 miles the spark plugs require changing.
These 2 would be on top of the cost for the 24K service.
Every 96,000 miles the transmission oil is changed (manual and tiptronic).
Every 2 years the brake fluid is changed.
At 4, 8 and 10 years the airbags are checked (then every 2 years).
The bodywork comes with a 10 year warranty.
The warranty can be extended to 10 years or 100,000 miles (c. 800 per year I believe), but if it has lapsed, it may not be easy to reinstate it.
Tyres are about £200 each for the rears and $160 each for the fronts.
They last about 12000 for the rears, maybe 15-18,000 for the fronts. If you drive gently or mainly on motorways you will get more, if you go on a track you will see a lot less.
Brake discs and pads wear, that's the price for all that stopping power. 4 discs + 4 pads would be something like 700 I guess. Life expectancy varies depending on usage.
Clutches wear as well, but not excessively. About a grand to replace at an OPC, but that shouldn't be a problem for you.
Most of the bits that wear out are designed to be replaced, so the costs are not too outrageous.
If any of the big bits fail, such as engine or gearbox, then the costs are 4 figures, pushing 5 figures if you need a new engine. Peace of mind from the extended warranty is worth the money if you can get it.
If everything goes smoothly (which is should), then it is no more expensive to run than many cars costing a third of the price.
Insurance depends on your circumstances, but if you use it every day, then you will be in 4 figures.
Around town I guess you would see 18 mpg, out of town around 25. Use optimax, bp ultimate or esso 97 super unleaded.
Getting the suspension properly setup is more than £100, since there is more to it than just doing the tracking. You might want to get this done occaisionally (like once per year, unless you hit a lot of potholes or kerb it).