sounds like some one shaking the pull tops of a coke can in a coke can,..if u know what i mean,.poss round exhast,..only seems to happen after a few dry days,,,,not so noticeable wen its wet,.no difference in performance,ect,.anyway in tho stealers thurs as glovebox not closing ,and got a rattel by glove box,,,but dont think this is realated,,,poss that bolt by air intake,behine indicator,,i have mentioned it to the dealers,plus my silver air vent adjuster thing,fell off.ive done 45oo miles since oct 11. Current: Freelander 2 GS, Orkney Grey, Factory fit privacy glass, design pack and Clearview pack. Almond Leather ,rear spoiler,rear mudflaps.my13.

Gone:Freelander 2, GS, "61"

Gone: Freelander 2, GS.e, "59"

Gone: Freelander 2, S, "08"

Might be a loose exhaust baffle.

"Might be a loose exhaust baffle."

Yer they can rattle a bit if loose inside as exhausts rust more from the inside than outside in due to water collection.
Some times you can gently tap the exhaust when cold with a rubber mallet and can hear it rattle

Had one go once on a Bedford CA - rattled for about a month then one day a loud bang - the baffle had come loose and blocked the tailpipe. so the pressure blew a hole in the silencer. Surely they make them to a better design nowadays though???