Update at 68,000km.
Oil leak repair from August last year did not hold and leak returned (more oil damp than a leak, no drips/drops). Porsche dealer is claiming on the warranty of the parts that they had fitted (since it was the gasket that failed). Parts and labour are covered.
((The Oil Leak explained (by Gemini):
The Cause
O-Rings: The synthetic rubber O-rings (AL06F/AK13B) on the oil pressure control solenoid dried out and flattened over time from years of engine heat cycles.
Loss of Seal: The brittle rubber lost its elasticity, allowing high-pressure engine oil to slowly weep past the seal and create a greasy smudge on the engine block.
The Fix
Clear Access: The mechanic drains the engine coolant and unbolts the overlapping, hard metal cooling pipes that physically block the area.
Replace Seals: The old solenoid O-rings are swapped out for fresh, pliable factory rubber units to stop the weep.
Replace Gaskets: New coolant profile gaskets (AQ12B/AO13B) are installed on the pipes to prevent future coolant leaks.
Refill Fluids: The cooling system is vacuum-filled with fresh antifreeze, and the engine oil reservoir is topped off.
The oil control solenoid sits high up on the side of the engine block, well above the oil pan where the bulk of your engine oil rests while the car is parked.
You might wonder why they drain all the coolant but not the oil. This happens because the hard coolant pipes run directly through the workspace and must be completely detached from the water pump housing. You cannot simply "unplug" a pressurized cooling pipe without gravity draining the entire system.))
The front brake pads and discs are up for replacement. The front pads lasted 33,000km (last fitted at 35,000km on clock). The rear pads (current pads fitted at 58,000km, having previously been replaced also at 35,000km on clock, so previously lasted 23,000km) are still good.
I don't know when the brake discs were last replaced. I bought the car at 32,000km and have not touched discs since then.
All in, the cost of front brake pads, front discs and labour at Porsche dealer came out slightly less than that of Cafe 9 (reputable Porsche specialist), that I decided to stick with the dealership. I have not owned an M car, but based on anecdotal reports (at least from Google) the cost is in the ballpark of dealer cost for M4 brakes.
Tyres are still good - last fitted at 39,000km. Seems to be 4mm all round with even wear pattern. I am questioning the need for the R699pm Porsche tyre insurance, but will keep it in place for now given the hit or miss nature of JHB roads.
Overall, the car is performing well. I am not tired of driving it daily to work and weekends.
Cars and coffee at Hazelwood
Not a garage queen - parking in the park
Good buyer's guide on the 991.1 from FCP Euro