Re: 2.2 Brera VS 3.2 Brera
I think there's quite a big difference in fuel consumption, certainly British drivers seem to notice.
The 2.2's stock exhaust and induction are pretty poor, they really stiffle the car. I had a stainless steel free flow exhaust and remap done and it became a totally new car - 17% torque increase, 12.5% power increase, 1% weight reduction and very driveable - 95% torque from 2000 to 5000 revs. Also it really sounds like a V6!
Rather than change the car you could get this work done for around £750-£1000, not sure what it'll cost you in Aus but maybe $1,500-2,000.
If you've got the cash then of course consider the V6.
Brat Pack no.8