As I have an RX400H I,m interested in battery pack life and the cost of replacement if ever required. My local dealer has told me that after referring back to Lexus UK it would seem that only once have they had to replace a complete Battery pack on a 400H and that was on a personal import from the States !!!
In New York Prius are used as Yellow Cabs now and been recorded as going for more than 16 years without problems !!!!
For those interested in such things a complete replacement Battery pack for a 400H is £ 3,199.00 inv vat. With a labour cost of £ 1,056 inc. vat.
Also interesting that the current RX450 comes with a Ten year Battery pack warranty..