I purchased my new Regal December 30, 2011. 1st new car in 7 years. Been reading about alot of negative issues - suspension vibration, radio volume, engine knock, transmission shifting, etc. So far, I haven't experianced any of these, but, I am concerned. I apreciate the awareness these threads raise, but I would really like to hear from Regal owners who are problem free and happy with their purchase.