Ok, just had a look at the car the OP linked in. It is a locally owned and maintained vehicle, with full service history. It is in good condition both inside and out with only usual wear of the foundry finish around the seat bases, and a bit on the instrument panel. Roof lining hasn't sagged. It wasn't ready for a road test, so only static things checked. Everything I could check works. Front diff recall has been done.
That's the good news.
Now for the bad news...
I couldn't check the suspension because it had a host of active faults including all the usual suspects when a battery is on the way out - and it is. When I started the car, it cranked very slowly and just fired. Much bonging of the alarm system...
The 'Check coolant' alarm was also active and upon inspection there was only water in the cooling system. Oh, and the bonnet struts are shot - I copped a bonnet in the head while under there...
Biggest issue I found was - you guessed it - the transmission. When I first started it, I dropped it into drive and it took about 5 seconds before anything like movement happened. I went through all the service records and there is almost every service invoice, but no mention of the transmission being done. The seller (a prestige car yard) couldn't offer me any more info on this either.
The other thing that rang an alarm bell for me was the amount of KM - or lack of - it had done in the last 18 months. Only about 8,000KM working off the service book. Before that, it done around 13 to 15KKM per year. Maybe they bought another car and didn't use it much - I don't know. I didn't get the previous owners details although these would be available.
After discussions the transmission issue with the Sales guy, I asked what they wanted for it - about $22K on the road. I asked if he would take $15K for it to allow for a transmission rebuild - he wasn't impressed by that. He said he come come down to $20K. I thanked him for his time.
So, with a stuffed battery, unknown cooling system condition and suspect transmission, my recommendation would be to walk away from this one IMO.
This is all just of course my opinion and should not be relied on as a professional test of the vehicle.
Cheers - Gav.

