Mine's been good. 2019. The only issue so far has been minor coolant loss on the original fill, but it might have been a factory-fill issue, or the car might just use a small amount of coolant. Not worth visiting the shop.
Routine maintenance otherwise. Gets driven hard-ish on the Autobahns and country roads here. As someone mentioned above, M-Sport is a bit stiff for some with the runflats. If you get Goodyears as stock tire, run them at 30 psi as Goodyear suggests--this transforms the handling and fixes the issue of center-wear. There have also been reports of these tires blowing out, and I suspect it is due to overfilling.
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