I have a whirring steering setup - had one of the power steering hoses replaced, doesn't seem to have fixed the issue, but the steering does seem to work fine.
On the rough running - get the car diagnosed by a VW specialist (they have access to appropriate tools for interrogating the VW ECU, which keeps track of a surprising number of things). Not overly familar with the 4pot engine, but if it runs individual coil packs, they'd be something I'd be investigating.
The other thing to look at would be engine/gearbox/dogbone mounts, particularly if the behaviour changes as you take it out of gear...
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