Hi, We bought a Xtrail columbia 2.3 sport on a 07 number plate last September. On startup the engine seems very rattley and does not quiet down for at least 2 miles, we have had it back to our Nissan supplier but they say theres nothing wrong and quite normal. Our last Xtrail on a 52 plate was not as noisy as this. Could anybody advise if this noise is quite normal., Thanx