2006 Kia Optima Overdrive

[ajns]

Does the 2006 Kia Optima have a 5th gear (overdrive)? My model is a 2.7L 6 cylinder with both auto (PRND) and "Sport" option (+ and - to the right of Drive). My research says no and I tried hitting the "+" at highway speed (75mph) to no avail. So, I am guessing that it is 4 forward gears. I just want to make sure I am not missing anything. My Optima is turning 3000rpm at 80mph, which seems high to me for that engine. My old RL was in that same range but it was a 3.5L. I am used to my Maxima, a 2.5L V6, which turned about 2700rpm @ 80mph.

[Optima]

There actually is an overdrive, what happens is the torque converter locks up at highway speeds, thus it acts like an overdrive.