I don’t know about the supply of Benz GLCs, but a friend has just sold his GLC 45 AMG to a third party online buyer, after 3 years of ownership, for £2k more than he paid for it.
Admittedly he bought it as an ex demo with £10k off list, but that’s a good result.
There’s a guy along the road from me who, since prob mid 2020 , has had
Speaking to him he says he has not lost a penny over the course of the 5 cars so far, with the high end ones being sold for more than he paid for them.
He is extremely anal about car care. Without a word of a lie the car gets washed 3 times a week. And not just washed, we are taking dried polished etc. Even during winter.
He puts his car out in the street when he is doing it presumably to stop all the snow foam and chemicals landing on his driveway. The tarmac on the road is actually all marked with the shape of bottom of tyres where he obviously sprays tyre sheen on them every time.