Since this an Audi thread and I'm kinda new - thought I'd post a difference between my Volvo vs Audi.
I really do find the ergonomics in the Volvo better and far for intuitive and simple.
The radio volume was
large, compared to the tiny Audi volume ; tracks could be changed
direct from the steering wheel ; end/answer call was
direct on the steering wheel ; climate control was a, er, breeze to use and far more intuitive and less fiddly. Even the driver computer was more simple and less fiddly .. definately think Audi could learn a thing or two there.
Features wise on my Volvo, I lost out on iPod adapter, active xenon and the biggy was keyless entry. The other two I got used to lacking quickly - but keyless is actually far less of a gimmick than people think and almost 2 weeks on, I still leave the keys in the ignition or walk to the car with the keys in my pocket.
Performance wise - no contest - but that is purely the model and not he car specifically. So it isn't really comparing apples with apples. Also using less fuel on a larger engined, more poerful car - which is great.
Sound - I had to tweak the Audi, but eventually got it the same as my Volvo. Default sounds a little tinny and I had to bias towards the back as even the middle, seems there is no ambiance from the rear. I do wish one had a guide on screen when changing volume - a bar graph or numbers or something. That's nit picking though
EDIT : Oh - the antiglare mirror on the Volvo was better - darker and faster.