Still getting used to the Stinger, and when I upgrade the sway bars and get better wheels/tires than the 18" OE Bridgestone during some summer months, I'll know more in terms of performance.
In terms of features, it's mostly little things that the Audi nailed: keyless entry was nearly instantaneous and worked on all doors (unless I'm missing something, Stinger only has function for front doors), muting radio automatically paused track, cabin noise was nonexistent at any speed, high speed stability was better, and I have to believe drag coefficient was lower, but the MMI system was slow on cold starts.
Where the Stinger shines is the upgraded tech, LED headlights are nice, Adaptive beams a plus, and the hatchback is a win.
There's something off with the way the Stinger maintains cruise control, though, kinda like a subtle rubber band effect from intermittent acceleration-coasting, but I haven't had a chance to try on different road surfaces.
I didn't have the Adaptive dampers in the Audi, and always had everything else in sport. Losing the manual transmission hurts, but I like the Stinger's sport settings just fine. Going from a supercharged V6 to the TT V6 is a significant difference: even with more low-end torque and horsepower, the Stinger doesn't feel faster and certainly can't match responsiveness. Granted, it's also about 400 lbs heavier.
All said and done, I think the Stinger is a fine Grand Tourer while the S4 was a bit sharper, leaning more to the sport sedan side.
Can I say I'm disappointed in the Stinger? Absolutely not. But it's less an extension of my mind and body than the 6MT+supercharged Audi while making for a more comfortable highway cruiser.
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