Gotcha. I don't have any other useless info for you. Other than.. I know sounds can be a pita to track, I don't suppose your aircleaner rattling around could be what you're hearing? The snorkels are the first to vibrate(if not zip tied down early on) and wear inside the airbox then the airbox itself wears away where it bolts down. But that won't make the steering column buzz.
I have a couple 2019's here at work but haven't gotten any complaints from those drivers. Yet.
The exhaust rattle(hanger) problem would make noise under light load and full throttle only when driving and iirc I couldn't get it to make noise while parked, only while moving.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)