Yes, they understeer, but the only Audi I've driven that didn't is my other half's A1 and that's probably because I've never pushed it. Once you know, you adapt. My AWD V70 (which I'll refer to again) was worse and had a turning circle like the QEII in comparison to my RS.
Thirst - no 5 litre twin turbo is going to sip fuel.
Bushes/bearings etc - as has been pointed out, it's a 2 tonne car. Having said that, the afore-mentioned V70 was just over a tonne and knocked out front wishbones and droplinks every 6 months. AND the rear shocks were £800 a time EACH.
Comfort - the driver's seat isn't as comfortable on a long journey as the V70 was but the rest of the cabin is far better
Load carrying - the figures say it'll carry a bit more than the V70 volume wise, but I've never tried, mainly because I wasn't bothered about damaging the trim in the Volvo so would ram it solid from floor to roof.
Fun to drive - yes and no. Depends what you call 'fun'. Although I can waft it around town/drive to Tesco etc like a regular A6, it's fast. Bloody fast. You think you're going fast, plant your foot on the floor and it takes off again but other than the exhaust note and the scenery passing you in a blur it's subdued inside - my daughter's old Seicento Sporting was more fun in a whizzy go-kart type way.
If you're looking at maintaining it yourself (even basic things) you have to be prepared for a world of pain and frustration - they're a rare car which few owners are prepared to touch so there's not a lot of information in the public arena. Coupled with that, the ingenuity used to stuff in an engine twice the size of the one that the body was designed for AND mount all the ancillaries is something else.
Took me months to find mine, a 400 mile round tip to view it and two train journeys to collect it.
Bottom line - it's been worth it so far.
And at 59 I don't care what I look like to others..
