I have logged 17,000+ miles on my 2012 KIA Optima.
I love the car, 100% reliable and very comfortable.
I'm glad I chose it over the Accord and Fusion.
That said, the window sticker read 26 city, 36 Hwy MPG.
I am in sales and travel between 100 to 400 miles a day.
30% city and 70% Hwy.
The best I have ever recorded is 30mpg.
The worst is 24 mpg.
My opinion, these figures are closer to what should be printed on the window sticker.
Cooled Seats, dual moon roof, amazing stereo.
Navigation system is not intelligent.
Pick the "shortest" route and it will route you on and off the hwy if you can get from an exit to onramp 5 miles ahead in a shorter distance than staying on the hwy.