Yes. Common. It’s essential to idle the turbo whenever it is red hot, which it will be after driving on the motorway (so idle for 2 minutes before switching off at fuel stops), after long ascents, and after towing. When not towing, if the last 10 minutes of your journey are at low revs on the flat (through a town, for instance) then that will do the job of cooling down the turbo. Stopping and switching off straight after towing a caravan up a long hill will hasten the turbo’s demise.