I think the Regal GS is a competitor to the Stinger. Personally, I was considering a Regal GS (older and newer one). I was also considering an Acura TLX. Both of those cars have AWD and a bunch of features at a decent price. However they were disappointing to me. When KIA came out with the Stinger, it changed everything and now I prefer that. It's been said in the media that the BMW4, Audi A4 A5, Mercedes C class are competitors but I would like to add the Buick Regal GS, Acura TLX, Cadillac ATS and Nissan Maxima (yes I know it's front wheel drive). In addition to that, although NOT competitors (and WON'T be cross shopped), I believe the Stinger has many of the attributes of the Porsche Panamera, Audi A7, BMW 5 series, Mercedes E class and Cadillac CTS. I personally believe the Regal GS, Acura TLX and Cadillac ATS have the most to fear from the Stinger. IF people buy the Stinger.