x5 for the wife. Bad idea? too late now.

[gasayers]

Morning all,
Just bought our first beamer.
Now very worried.
It’s a fantastic car to drive, couple of pixels out but otherwise perfect condition for age.
2002 3l petrol auto 160000km
Been reading the forums and seems most people consider it something of an achievement to get a weeks driving without doing repairs.
Don’t get me wrong. I expect big service bills and know any problems will be expensive. I just had assumed that it was “IF” something goes wrong not “when and how often”
Now my wife, (not me) has wanted an X5 for years and this one came up at a good price; we’ve both been driving Toyota’s for 15 years and literally done 100000’s of kms with no repairs. I don’t even consider wether my surf will break down at 250000kms.
unfortunatley if my wife breaks down on the motorway it's a bit of a given that she'll freak out.
Point is - Can I expect her to drive this to work reliably (if serviced) every day with our daughter in it.
we drive very sedately and will do the occasional 300k trip to the beach. This is a second vehicle.
Does anyone just drive and enjoy these cars as they get older?
A little assurance at this stage would go a long way.
I also recognise that 90% of people on the net are looking for answers so hopefully there are a huge percentage of people driving these cars trouble free and not posting.
Cheers
Glen