A good perusal of this Forum mentions noises galore and I think I have heard most after our recent 1500 mile trip to the sodden North.
The weirdest of these is a random substantial tapping behind the dash, which doesn't appear to coincide with bumps, rpm or anything. Sounding like someone tapping a screwdriver against the frame.....
Creaking and groaning from the belt is irksome in a city when not drowned out by the exhaust, but the belt has slackened off over my Scottish tour of 1500 miles or so. Anything but the most considerate operation of clutch results in my aforementioned burnt rubber pong. The belt isn't jumping, but it may shimmy across to rub on the flange of the sprocket under such circumstances. God knows ;-)
Various bits (minor) have fallen off, as a result of vibration but most annoying is a broken headlight shell. I read here that this can be as a result of over tightening to prevent the whole assembly loosening.
I gave up keeping a number plate as it falls off after repeated refining over potholes.
Generally the Mog was a joy on open roads and is the first vehicle I have had that is capable of making every one else smile (unusual on today's roads)....even if we weren't always so delighted (i.e. in a traffic jam).
Since the rain fell unabated, and we somehow found ourselves in a stream of Belgium Morgans, I thought I'd mention one Mog with a hood (stretched from a raised windscreen to behind the roll over protectors). Looked handy, but never seen this mentioned here.