Op,it is really simple!
Ask if the car has a service book,if it has you can verify the mileage at the dealer.
If they have some excuse for not having it,no deal.
I bought a Ford Ranger with 60 000 km on the odometer nearly
5 years ago.It was a 2009 ,they had the service book with all
details and the dealer confirmed it.
Still have the truck and it has 113000 km now.
They are out there even at the car tents.