Nope. No tachometer at all as far as I can tell. However I used the 'Torque' app with a cheap bluetooth OBD II data reader thing (all cars have a common data port) and it could display a tach. I haven't tried it yet on this car.
But I have noticed at interstate speed (85 mph...yikes! Our speed limit is 80) the little 1.6L atkinson engine is nearly at the wall. Yesterday with 3 people in the vehicle it wanted to kick back and forth from 6 to 5 a bit but bear in mind along with the 3 people I have the PHEV version which has a 250 pound battery too. Any little incline/wind gust kicked it down. But I'm at the performance limit of the vehicle. Probably shouldn't drive that fast.
You'll get more shifting oddly with cruise on. It wants to keep a steady speed. On the interstate then even small inclines or even vehicle drafts can fool with it especially in traffic where it is going to want to keep adjusting speed to match. It'll shift less without the cruise on in that situation.
My Niro has this problem no matter what scenario. The DCT does not want to engage when it is in ECO mode. In order to stop the engine from howling I have to slap it back in sport mode which indicates it's hung in fifth gear then bump it up to 6th and then switch back to ECO mode. I wonder if this can be fixed with some adjustments.
I have an OBDII scanner connected and have found in 6th gear the engine rpm is at 2,000 while at 60 mph. At 90 mph it would be at 3,000. I have cruised at 90 mph and can report that the car was not at a wall, if anything just the opposite. It seemed like it wanted to go faster.