We've updated our reliability stats for the Boxster and Cayman to include owner experiences through the end of 2015, about eight months ahead of other sources.
In terms of repair trips per 100 cars per year--lower is better:
2015 Boxster and Cayman: 9, low, small sample size
2014 Boxster and Cayman: 12, low
2013 Boxster and Cayman: 22, low
2009 Boxster and Cayman: 32, low, small sample size
2008 Boxster and Cayman: 38, low
2007 Boxster and Cayman: 42, low
2006 Boxster and Cayman: 32, low
2005 Boxster: 45, low
2004 Boxster: 41, low, small sample size
2003 Boxster: 56, low
2002 Boxster: 48, low
2001 Boxster: 54, low
2000 Boxster: 64, low, small sample size
We have two additional statistics, "Nada-odds" and "Lemon-odds", to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop:
2014 Boxster and Cayman: 90, < 1
2013 Boxster and Cayman: 79, < 1
2008 Boxster and Cayman: 76, 3
2007 Boxster and Cayman: 67, 4
2006 Boxster and Cayman: 76, < 1
2005 Boxster: 60, < 1
2001 Boxster: 57, < 1
No stat, or a small sample size? Then we especially need more owners involved for that model year.
For the repairs behind these stats, reliability information on other models, and to sign up to help improve this information:
Porsche Boxster and Cayman reliability ratings and comparisons