BuMotar's take

“The mileage is high for a 2017 but not unusual for an X6 that has been driven, and these photos only show the exterior so ask to see the engine bay, the interior, and a cold start. Without an inspection on file and no way to check the price against similar cars, you need to see service records and take it to a workshop you trust before you talk money.”

An opinion based on the listing's photos and how its price compares with similar cars. It is not an inspection and is no substitute for one.