My 2c....
If a family member is asking about a particular car over 100,000km (in my experience), it means that they are asking for a car that will give them Zero hassles. If something goes wrong (even if low chance), they are going to blame you for giving wrong advice.
I would steer them to a Japanese brand, unless the previous owner of the German car kept meticulous records of every maintenance (and preemptive maintenance) item.