I will have to try the manual. It's funny you should say that because I was driving a stick prior to this and I actually miss down shifting to help slow down. So, if I'm driving 60 mph and I flip into manual, it will shift on it's own? It knows what gear it should go into? With the stick and the clutch you could shift from 5th to 3rd depending on the situation. Also, I have occasionally used the sport mode...experimenting. Uses more gas?
Stop.
This is nonsense. Sport mode does use a bit more, but otherwise, just drive it sensibly.
Several things at play here:
1: Engine break-in will take a few hundred miles. I know people claim this is BS, but it isn't, based on my experience with new cars and monitoring oil usage and emissions. Second, DRIVETRAIN breakin is happening too. The diffs and transmission gears are polishing each other.
2: Do you drive short trips? These engines absolutely DUMP fuel to warm the cats up fast and get light-off. It reminds me of my cammed up, no-emissions late 80's Mustang GT in the smell dept. on a cold crank, so if you are driving only 2-3 mi often times, then you're just driving around in the "fuel dump" phase pretty much, and if you're doing 5-8 miles at a time, you're still driving nearly half your time in that parameter...it's gonna SUCK!
I did this with my CX5, and got about 22.5mpg typically.
3: If you're doing over 60 on the freeway, this little motor doesn't do so hot at that efficiency wise. It's going to start at about 30mpg doing 60, and drop 1-2mpg every 5mph until you hit 75 or so, and from there plummets. My road trips typically happen at 70-85mph, and I average around 27mpg give/take on them. My vehicle is rated for 30 (2016 CX5 2.5 AWD).
Basically, if you're tooling around for 1-2 miles, and then hit the interstate and do 75, you've driven around town in the "dumping fuel" stage, and then taken the engine right out of its efficiency parameters as soon as THAT was over, by doing 75 on the freeway. It's going to do nothing but piss you off even after it's broken in, given this driving pattern. You need a V8, or at least a V6/I6, for these driving habits to return EPA ratings.
Look at it this way though, you're still only having to burn 87 octane, it's an SUV, and on road-trips you should do 26-28. Not bad really.