We sold last year the wife's Cayman 987.2. They were just changing the shape so we couldn't get a new one, it was the garage's own vehicle with low mileage. Owned for 12+ years, full Porsche service history + oil and filter every 12 months between at Porsche. Less than 50,000 miles. Porsche extended warranty from new until we sold. Rear brake pipes & full steering rack changed months and 100 miles before sale, front brake pipes the year before. Also heater fan changed same time as noisy.
Not getting used and I couldn't get out of it, wife was crying

. I did assure her we didn't need to sell but we just didn't use it, 100 miles between MOT's.
Also sold her '67 Fiat 850 Spider. Owned about 15 years.
Not sure she has forgiven me yet
You are only getting older, buy best Z4 you can new used and enjoy before you can't. It will be electric only soon