New Zealand: Average age of bus fleet by region during 2007 to 2011 December 1, 2012 | Data & Statistics A regional break-up of New Zealand’s bus fleet in terms of average age reveals that as of 2011, the lowest average age is in Auckland and Wellington (both at 13.3 years), while the highest avera... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password