Whilst mine's a coupe, and on 150k, I still wouldn't let it go privately for £9k.
In my case it's due to the amount if money that's been spent on repairs/maintenance in the last 10k miles...probably close to £15k between me and the insurance company, and the fact that I know it's history intimately from 9,000 miles when I bought it. Plus a couple of grand on upgrades.
About the only major part that's not been replaced on mine at some point is the gearbox, and probably has more younger/newer parts on it than most "low mileage" cars for sale
At the mileage you're looking at I'd be expecting to see a clutch/flywheel change and at least one set of springs/dampers. Most cars will be fine at these sorts of mileage as long as they're maintained and not neglected when the repairs become expensive.
To give you a bit of an idea of what you can save/spend by taking it to a specialist instead of a dealer for maintenance...with OE/genuine parts:
- oil service - £180 specialist vs £400 dealer
- Insp 2 - £400 specialist vs £900 dealer
- clutch & flywheel - £2k specialist vs £4K dealer
- diff (dealer only part) - £3k specialist vs £4K dealer
- 224M wheels - £600 German dealer vs £1400 UK dealer
- MAF - £200 specialist vs £600 dealer
- Rear trailing arms (dealer part) - £900 each
Other than the servicing, I've only needed to do the items above once - and it's still about half the cost of running my M5. Of course there's plenty that I've done that is not listed above :?
If it's got a big folder full of invoices then it's easy to see where the money's been spent on it.
High mileage may only indicate it's done lots of steady motorway miles, which are not hard on the car, but you can get an idea of how hard it's been driven by the mileage between servicing, as the service indicator bases its countdown on using 500 gallons of fuel to give you the max range of 15,500 between services, which will an average of over 30mpg.
Significantly less than that average MPG will give you correspondingly shorter service intervals and something like 10-12k would indicate more town/stop/start driving, short runs, weekend use only. Mine does 14k between schedules services and I do the odd track day, ring trip, weekend noon between my 200 mile motorway commutes. I supplement this with extra oil services around ring trips, and do them at least every 6k miles.
On the other hand, you could super/turbo-charge your current car that you know the history of
