After living with my 2015 5.0 for a little while I'd say my biggest gripes are:
1. The padding on the center console is too hard. My RAM really spoiled me with its large pillow soft
armrest. Door
armrest could use some more padding as well, but it's a sight better than my RAM.
2. Trunk struts are totally shot and don't open the trunk more than a crack. I suspect I could replace them, but that takes time and money.
3. Only 4 cup holders?! And one of them hardly counts as a
cup holder. Again, my RAM spoiled me with 6 in the front. They could have at least added bottle holders in the door pockets, my 2010
Kia Forte had them!
4. Everything LED or HID but not the DRL/turn signals.
5. Only two 12V outlets. And one USB. You know how often I use a cigarette lighter to power something? Rarely. One would be enough with some more USB ports. I know it's from 2015, but still, everybody had USB everything even then.
6. Dash info center could have more info given. Oil temperature would be nice.
7. Staggered tires. I know why, but it's a bit annoying. 275 width Sumitomo HTR Z3's hook up great, even in rain. Annoyingly more expensive than my large 3/4 ton truck tires.
8. Crumb trap thigh extension. Rolling extensions would be nicer, but gotta cut costs somewhere...
Other than that, I LOVE my car! So smooth, so quiet (especially compared to my loud diesel), such a nice place to be.
And this isn't so much a gripe about the Genesis in particular, but rather all sedans: much less storage space than my Megacab. Gotta find places to put all my stuff! Also, why is the trend to have no way to check transmission fluid level? I get it on high end luxury cars where the only service will be done at the dealer under a service contract, but I like working on my own cars. Hell, Mercedes and BMW are doing away with engine oil dipsticks too. Don't know how I feel about that. Especially having to run the engine to check the level, I foresee that ending badly.