Skrrrt

These mpg seems way better than what I'm getting and idk what/if there's something wrong with mine. I have a 2015 mkz hybrid and it eats gas like a mofo. Full tank on the highway 70-80 miles an hour and I'll lose half a tank at maybe 100 miles. Dash shows between 30-33 mpg. Took it in and they said no issue. Tech supposedly drove it at 70 mph and said dash indicated 38 mpg. That's bs unless there's some magical way to drive highway speed. Changed spark plugs and doesn't seem to change. Anyone have any idea what could be wrong?

As the title says, is there a better option? When I need a replacement, just wondering if there's a stronger hybrid battery so I can get more umph at acceleration and so the gas doesn't turn on so soon. If they turbo the gas engine then that may help but otherwise it's pretty slow on take off. I get it's a hybrid but if we could use more EV overall I think it'll be more efficient, not saying it has to be like a Tesla. I have MY15 MKZ hybrid btw.

Hey noob here. Just about to pick up a '15 Z hybrid and when I checked it out I noticed there's an rca input in the center armrest storage. Can you use that for video or is it just audio?