This is due to depreciation. On a lease you are paying payments on the amount the car depreciates. For example a $30,000 car that has a residual ( value at end of lease term) of 20,000; the lease payment is based on the $10,000 depreciation plus the money factor (interest). So the 350Z depreciates more than some other cars; that is why the lease payment is higher; and, possible the interest rate may also be higher.