The Stinger GT is not a track car. It was never meant to be. The Q50 also doesn't "ride like a Buick" on your daily commute or road trip.
RS400 vs. Stinger GT:
Performance Increase:
- 133 lbs. lighter
- +35 hp
- - 28 tq
- wheelbase is 2 inches less
- width is 2 inches less
It also losses you some options:
- 3 tenths faster to 60
- 2 tenths and 2 mph faster in the ¼ mile
- one more speaker in the audio system
Not feeling the "bang for the buck" with 8 grand* (or a couple hundred a month) extra resulting in a net gain of a few tenths.......
- HUD
- Ventilated Seats
- Android Auto
- Apple Carplay
- Heated Rear Seats
- Wireless phone charging
* if the Stinger GT RWD ends up being 50K
For the brand-centric types, it's going to make a difference if you buy into the idea that Infiniti is a better product than Kia, which a lot do. As I said before, it'll be a moot point if a base GT can be had in the low $40K range because then you are looking at the GT not really having a direct competitor in its price range, unless you think someone will be cross shopping an entry-level Q50/IS/4 Series, in which the GT trumps soundly.