Gen 3 Mini engine life

[GG33]

Looking to buy a 2018 Mini 2.0 Cooper S, (the all BMW engine, not the earlier Peugeot derived version) most of which seem to have around 50k miles. This is much higher than I would normally choose.
How reliable are these engines and how many miles you expect them to go without issues? (timing chain etc)?

GG33

[PT1984]

Prices have really increase meaning you have to look at higher mileage.

The B48 is a good engine, used across the BMW range, and some in very high states of tunes.

It’s chain driven. We have had our MCS fir 3 years now. No issues. Just make sure you service it every 12, rather than the recommended 24 months.