Recurring ownership items include convertible-top wear (rear-window and mechanism issues), AOS (air-oil separator) failure as a wear part best replaced with a genuine Porsche unit, and overdue service: spark plugs roughly every 5-6 years/30k miles and brake fluid every two years are commonly cited as due on stored low-mileage cars.
Convertible top and routine maintenance items
Porsche Boxster 987 · mechanical