After just two months my Z started making very odd noises from the fuel pump, so took it in to the dealers after explaining at great lengths what it was. Had to wait two weeks for a loan car (a dirty Mini) at 5 pm they phone me to say they have found the problem "its the fuel pump sir" but they havnt got a new one they are on back order and could be at least 2 weeks! Oh and can I make sure the loan car is returned by no later than 8 am in the morning.........Great!!!