I never add up what we spend on cars, though our XM has had that spent on it easily, my Activa has cost a fair old amount and no doubt ill be spending more on that too. Im sure I spent about £1000 on my last C5 over the year I had it. At this age they are not really depreciating, indeed good XMs are appreciating, and so your not really losing money when your spending it. Its not a great idea to spend spend spend and then sell, as you probably wont recoup it back, however to use and enjoy, it will be more than worth the minimal outlay.
Certainly more financially tolerable than the depreciation on a new car! Fancy spending £35K on a C6 for it to be worth £20K a year later
XMs were similar in their day too, we got a 6 year old 2.0 16v XM for £1200, a car which was £19,000 6 years earlier.
